US20140274662A1 - Systems and Methods for Variations of ZPGM Oxidation Catalysts Compositions - Google Patents
Systems and Methods for Variations of ZPGM Oxidation Catalysts Compositions Download PDFInfo
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- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
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- B01J23/688—Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with manganese, technetium or rhenium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Definitions
- the present disclosure relates generally to catalytic systems, and more particularly to variation of compositions for catalytic converters which are free of any platinum group metals.
- a plurality of catalysts within catalytic converters are generally fabricated using a monolithic honeycomb skeleton made of metallic or ceramic materials, which may be coated with a ceramic substrate impregnated with Pt, Pd, and/or other platinum group metals (PGM) as the active catalysts.
- PGM platinum group metals
- sample composition which may be used for manufacture catalyst systems that do not require PGM, and may be capable to work at low conversion temperatures having similar or better efficiency than existing oxidation catalysts, also for controlling air pollution and other environmental application.
- DOC Diesel Oxidation Catalyst
- Suitable variation of compositions for ZPGM catalyst may produce improvements to oxidize carbon monoxide and hydrocarbons included in diesel exhaust gases, achieving similar or better efficiency than existing internal combustion engines oxidation catalysts, which employs PGM materials.
- ZPGM catalysts Materials suitable for use as ZPGM catalysts include Lanthanum (La), Yttrium (Y), Silver (Ag), Manganese (Mn) and combinations thereof.
- the disclosed ZPGM DOC systems may include perovskite structures with the characteristic formulation ABO 3 or related structures.
- compositions for ZPGM catalyst may be used to prepare washcoat and overcoat material, forming an aqueous slurry, which may be used as coatings to fabricate ZPGM catalysts systems.
- Suitable materials for use as substrates may include cordierite, metallic alloys, foams, microporous materials, zeolites or combinations.
- Carrier metal oxide materials of use in catalysts containing one or more of the aforementioned combinations may also include ZrO 2 , doped ZrO 2 with Lanthanide group metals, Nb 2 O 5 , Nb 2 O 5 —ZrO 2 , alumina and doped alumina, TiO 2 and doped TiO 2 .
- a co-precipitation method may be employed for coating La—Mn or Y—Mn perovskite on suitable support oxide materials which may form part of the washcoat slurry and overcoat slurry. Washcoat or overcoat materials and ZPGM catalysts may be deposited on a substrate in a single step.
- Additional element such as Ag for partial substitution of perovskite structure may be employed part of washcoat or overcoat via co-precipitation method. Additional element may also employed as impregnation component.
- a variation of composition, carrier metal oxide and preparation method significantly influence the oxidation property of ZPGM catalyst.
- FIG. 1 shows ZPGM catalyst system structures, according to an embodiment.
- FIG. 2 shows light-off test results of a ZPGM catalyst system under exhaust lean condition, according to one embodiment.
- FIG. 3 shows HC light-off test results of a ZPGM catalyst system under exhaust lean condition, according to one embodiment.
- FIG. 4 shows HC light-off test results of a ZPGM catalyst system under exhaust rich condition, according to one embodiment.
- Catalyst system refers to a system of at least three layers, which may include at least one substrate, a washcoat, and an optional overcoat.
- Diesel oxidation catalyst refers to a device which utilizes a chemical process in order to break down pollutants from a diesel engine in the exhaust stream, turning them into less harmful components.
- Substrate refers to any suitable material for supporting a catalyst and can be of any shape or configuration, which yields sufficient surface area for deposition of washcoat.
- Co-precipitation may refer to the carrying down by a precipitate of substances normally soluble under the conditions employed.
- Washcoat refers to at least one coating including at least one oxide solid which may be deposited on a substrate.
- “Overcoat” refers to at least one coating including one or more oxide solid which may be deposited on at least one washcoat.
- Perovskite refers to a ZPGM catalyst, having ABO 3 structure of material which may be formed by partially substituting element “A” and “B” base metals with suitable non-platinum group metals.
- Carrier material oxide refers to materials used for providing a surface for at least one catalyst.
- Oxygen storage material refers to materials that can take up oxygen from oxygen-rich feed streams and release oxygen to oxygen-deficient feed streams.
- ZPGM Transition Metal Catalyst refers to at least one catalyst which may include at least one transition metal completely free of platinum group metals.
- Platinum group metals refers to platinum, palladium, ruthenium, iridium, osmium, and rhodium, unless otherwise stated.
- exhaust refers to discharge of gases, vapor, and fumes created by and released at the end of a process, including hydrocarbons, nitrogen oxide, and carbon monoxide.
- Conversion refers to the change from harmful compounds (such as hydrocarbons, carbon monoxide, and nitrogen oxide) into less harmful and/or harmless compounds (such as water, carbon dioxide, and nitrogen).
- T50 refers to the temperature at which 50% of a material is converted.
- R Value refers to the number obtained by dividing the reducing potential by the oxidizing potential.
- the present disclosure may employ methods for producing suitable variations of composition for diesel oxidation catalyst system.
- the ability of such materials to effectively treat internal combustion exhaust gases depends on the capability for oxidation of nitrogen oxide, carbon monoxide oxidation, and unsaturated and saturated hydrocarbon.
- variation of composition for ZPGM catalyst may be formed by using a suitable composition, such as perovskite, having the general formula ABO 3 where components “A” and “B” may be any suitable non-platinum group metals.
- suitable composition such as perovskite, having the general formula ABO 3 where components “A” and “B” may be any suitable non-platinum group metals.
- Materials suitable for use as catalyst which may include, Lanthanum (La), Yttrium (Y), Silver (Ag), Manganese (Mn) and suitable combinations thereof.
- compositions for ZPGM catalyst may also be formed by partially substituting element “A” of the structure with suitable non-platinum group metal in order to form a structure having the general formula A 1-x M x BO 3 , providing an improved, cost effective ZPGM diesel oxidation catalyst system for internal combustion engines, which may provide an alternative to PGM materials, based in low cost, thermal stability at high temperatures, and excellent oxidation properties.
- FIG. 1 depicts ZPGM catalyst system 100 configurations, according to various embodiments.
- ZPGM catalyst converters may include: a substrate 102 , a washcoat 104 , and an impregnation layer 106 .
- Washcoat 104 may include at least support oxides material and may include ZPGM catalysts.
- Impregnation layers 106 may include the active oxidation ZPGM catalysts components.
- ZPGM catalyst system 100 may include a perovskite structure having the general formula ABO 3 or related structures resulting from the partial substitution of the A site. Partial substitution of the A site with M element will yield the general formula A 1-x M x BO 3 .
- A may include lanthanum, strontium, or mixtures thereof.
- B may include a single transition metal, including manganese, cobalt, chromium, or a mixture thereof.
- M may include silver, iron, cerium, niobium or mixtures thereof; and “x” may take values between 0 and 1.
- the perovskite or related structure may be present in about 1% to about 30% by weight.
- method for preparation may be a one-step process, wherein a ZPGM catalyst of ABO 3 perovskite is precipitated on carrier metal oxide as washcoat 104 .
- components of washcoat 104 including carrier metal oxide (CMO) and water may first undergo a milling process to form washcoat slurry. Milling process may take from about 10 minutes to about 10 hours, depending on the batch size, kind of material and particle size desired.
- Carrier metal oxide materials of use in catalysts containing one or more of the aforementioned combinations may also include ZrO 2 , doped ZrO 2 with Lanthanide group metals, Nb 2 O 5 , Nb 2 O 5 —ZrO 2 , alumina and doped alumina, TiO 2 and doped TiO 2 .
- the co-precipitation process may start with first mixing nitrate solution of lanthanum or yttrium and manganese for a suitable amount of time at room temperature which may last from 1 hour to 5 hours.
- a silver nitrate solution may be added to the mixture of lanthanum (or yttrium) and manganese nitrate; then the solution may be mixed at room temperature for about 1 hour to 5 hours.
- the mixture may undergo metallization process by adding the ZPGM nitrate solution to washcoat slurry.
- Metallization process may last from 1 hour to 5 hours, followed by co-precipitation in presence of suitable compounds.
- Suitable compounds for co-precipitation of metal salts may include tetraethylammonium hydroxide, other tetraalkylammonium salts, ammonium acetate, ammonium citrate, sodium hydroxide, sodium carbonate and other suitable compounds known in the art.
- the aqueous slurry may be coated onto a suitable substrate 102 as washcoat 104 , followed by a drying step, in which the washcoated substrate 102 may be dried at room temperature. Afterwards, the washcoated substrate 102 may undergo a firing stage, in which the washcoated substrate 102 may be fired at a temperature ranging from 600° C. to 800° C., for approximately 2 hours to 6 hours. In one embodiment, 750° C. for 4 hours.
- the resulting ZPGM catalyst system 100 has a perovskite structure A 1-x Ag x MnO 3 , where A is Y or La.
- method for preparation may be a two-step process, wherein a part of ZPGM catalyst of ABO 3 perovskite is precipitated on carrier metal oxide as washcoat 104 and other part of ZPGM catalyst may applied as impregnation component.
- components of washcoat 104 including carrier metal oxide (CMO) and water may first undergo a milling process to form washcoat slurry. Milling process may take from about 10 minutes to about 10 hours, depending on the batch size, kind of material and particle size desired.
- Carrier metal oxide materials of use in catalysts containing one or more of the aforementioned combinations may also include ZrO 2 , doped ZrO 2 with Lanthanide group metals, Nb 2 O 5 , Nb 2 O 5 —ZrO 2 , alumina and doped alumina, TiO 2 and doped TiO 2 .
- the co-precipitation process may start with first mixing nitrate solution of lanthanum or yttrium and manganese for a suitable amount of time at room temperature which may last from 1 hour to 5 hours. When the mixture is ready, it may undergo metallization process by adding the ZPGM nitrate solution to washcoat slurry.
- Metallization process may last from 1 hour to 5 hours, followed by co-precipitation in presence of suitable compounds.
- suitable compounds for co-precipitation of metal salts may include tetraethylammonium hydroxide, other tetraalkylammonium salts, ammonium acetate, ammonium citrate, sodium hydroxide, sodium carbonate and other suitable compounds known in the art.
- the aqueous slurry may be coated onto a suitable substrate 102 as washcoat 104 , followed by a drying step, in which the washcoated substrate 102 may be dried at room temperature.
- the washcoated substrate 102 may undergo a firing stage, in which the washcoated substrate 102 may be fired at a temperature ranging from 600° C. to 800° C., for approximately 2 hours to 6 hours. In one embodiment, 750° C. for 4 hours.
- the resulting ZPGM catalyst system 100 has a perovskite structure AMnO 3 , where A is Y or La.
- the preparation process may follow by impregnation method.
- the process may start with mixing step, where a silver nitrate solution may be added to water and the solution may be mixed for a suitable amount of time at room temperature which may last from 1 hour to 2 hours.
- a silver nitrate solution may be added to water and the solution may be mixed for a suitable amount of time at room temperature which may last from 1 hour to 2 hours.
- the Ag aqueous solution When the Ag aqueous solution is ready, it may undergo impregnation process, where the mixture may be impregnated onto a previously washcoated substrate 102 with a perovskite structure AMnO 3 , where A is Y or La.
- impregnated substrate 102 may be subjected to a drying process and a firing process. Firing process may last between 3 hours and 6 hours, and may be performed and a temperature between 600° C. and 800° C., preferably 750° C.
- Example 1 is a ZPGM catalyst system 100 , prepared by co-precipitation method and include substrate 102 and washcoat 104 .
- Washcoat 104 includes at least a carrier material oxide, such as zirconia and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material.
- the milled zriconia slurry is mixed with aqueous solution of at least yttrium nitrate, silver nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide. The pH of slurry adjusted to approximately neutral condition.
- the yttrium in washcoat 104 is present in about 10% to about 40%, by weight.
- the silver in washcoat 104 is present in about 1% to about 10%, by weight.
- the manganese in washcoat 104 is present in about 10% to about 30%, by weight.
- the washcoat 104 is deposited on the cordierite substrate 102 and then fired at about 750° C. which last about 4 hours.
- the resulting ZPGM catalyst system 100 has a perovskite structure Y 0.8 Ag 0.2 MnO 3 .
- Example 2 is a ZPGM catalyst system 100 , prepared by co-precipitation method and include substrate 102 and washcoat 104 .
- Washcoat 104 includes at least a carrier material oxide, such as alumina and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material.
- the milled alumina slurry is mixed with aqueous solution of at least lanthanum nitrate, silver nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide.
- the pH of slurry adjusted to approximately neutral condition.
- the lanthanum in washcoat 104 is present in about 10% to about 40%, by weight.
- the silver in washcoat 104 is present in about 1% to about 10%, by weight.
- the manganese in washcoat 104 is present in about 10% to about 30%, by weight.
- the washcoat 104 is deposited on the cordierite substrate 102 and then fired at about 750° C. which last about 4 hours.
- the resulting ZPGM catalyst system 100 has a perovskite structure La 0.8 Ag 0.2 MnO 3 .
- Example #3 is a ZPGM catalyst system 100 , prepared by combination of co-precipitation and impregnation method and include substrate 102 and washcoat 104 and impregnation layer 106 .
- Washcoat 104 includes at least a carrier material oxide, such as zirconia and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material.
- the milled zirconia slurry is mixed with aqueous solution of at least yttrium nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide. The pH of slurry adjusted to approximately neutral condition.
- the yttrium in washcoat 104 is present in about 10% to about 40%, by weight.
- the manganese in washcoat 104 is present in about 10% to about 30%, by weight.
- the washcoat 104 is deposited on the cordierite substrate 102 and then fired at about 750° C. which last about 4 hours.
- silver may impregnated on washcoated substrate 102 , following by firing at about 750° C. which last about 4 hours.
- the silver in impregnation layer 106 is present in about 1% to about 10%, by weight.
- the resulting ZPGM catalyst system 100 has a perovskite structure YMnO 3 doped with Ag.
- Example #4 is a ZPGM catalyst system 100 , prepared by combination of co-precipitation and impregnation method and include substrate 102 and washcoat 104 and impregnation layer 106 .
- Washcoat 104 includes at least a carrier material oxide, such as alumina and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material.
- the milled alumina slurry is mixed with aqueous solution of at least yttrium nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide. The pH of slurry adjusted to approximately neutral condition.
- the yttrium in washcoat 104 is present in about 10% to about 40%, by weight.
- the manganese in washcoat 104 is present in about 10% to about 30%, by weight.
- the washcoat 104 is deposited on the cordierite substrate 102 and then fired at about 750° C. which last about 4 hours.
- silver may impregnated on washcoated substrate 102 , following by firing at about 750° C. which last about 4 hours.
- the silver in impregnation layer 106 is present in about 1% to about 10%, by weight.
- the resulting ZPGM catalyst system 100 has a perovskite structure YMnO 3 doped with Ag.
- FIG. 2 shows the light-off test results 200 for the ZPGM catalyst system 100 of example #1.
- the light-off test is performed under exhaust lean condition and the hydrocarbon in feed stream is propylene.
- the test is performed by increasing the temperature from about 100° C. to 600° C. at a constant rate of 20° C./min.
- the light-off test results 200 show this catalyst is very active for NO conversion, as well as for CO and THC conversion under lean light off condition.
- the T50 for CO may be at about 230° C. and T50 for HC may be at about 250° C.
- the NO conversion under lean condition may result as oxidation of NO to NO 2 .
- the NO oxidation reach to about 43% conversion at temperature of 396° C.
- FIG. 3 shows the HC light-off test results 300 for the ZPGM catalyst system 100 of example #1, example#2, example#3 and example#4 for a fresh sample.
- the lean light-off test is performed under exhaust lean condition and the hydrocarbon in feed stream is propylene. The test is performed by increasing the temperature from about 100° C. to 600° C. at a constant rate of 20° C./min.
- the HC light-off test results 300 comparison of example#1 and example#3 shows that the catalyst prepared by one step co-precipitation are more active oxidation catalyst compare to samples prepared by combination of co-precipitation and impregnation.
- the HC T50 for catalyst of example#1 and example#3 is about 250° C. and 443° C. respectively.
- Comparison of catalysts of example#1 and example#2 shows the effect of composition variation on oxidation activity.
- the catalyst of example#1 with Y—Ag—Mn—ZrO 2 composition shows better HC conversion than catalyst of example#2 with La—Ag—Mn—Al 2 O 3 composition at the same lean condition.
- the HC T50 of example#2 is about 432° C.
- Comparison of example#3 and example#4 light off curves shows the improvement of oxidation property by using ZrO 2 instead of Al 2 O 3 carrier metal oxide.
- FIG. 4 shows the HC light-off test results 400 for the ZPGM catalyst system 100 of example #1, example#2, example#3 and example#4 for fresh sample.
- the light-off test is performed under exhaust rich condition.
- the hydrocarbon in feed stream is propylene.
- the test is performed by increasing the temperature from about 100° C. to 600° C. at a constant rate of 20° C./min.
- the HC light-off test results 400 compare the combination effect of variation of composition, variation of carrier metal oxide and variation of preparation method.
- the HC T50 for fresh catalyst of example#1 is 312° C.
- the HC T50 for fresh catalyst of example#4 is 351° C.
- the HC T50 for fresh catalyst of example#2 is 480° C.
- the HC T50 for fresh catalyst of example#3 is 500° C.
Abstract
Description
- This application claims priority to U.S. Provisional Application No. 61/791,721, filed Mar. 15, 2013, titled Methods for Oxidation and Three-way ZPGM Catalyst Systems and Apparatus Comprising Same and to U.S. Provisional Application No. 61/791,838, filed Mar. 15, 2013, titled Oxidation Catalyst Systems Compositions and Methods Thereof, and U.S. Provisional Application No. 61/791,963, filed Mar. 15, 2013, titled System and Method for Two Way ZPGM Oxidation Catalyst Systems, and U.S. Provisional Application No. 61/792,071, filed Mar. 15, 2013, titled ZPGM Catalyst Systems and Methods of Making Same, and U.S. Provisional Application No. 61/792,215, filed Mar. 15, 2013, titled ZPGM TWC Systems Compositions and Methods Thereof, the entireties of which are incorporated herein by reference as if set forth herein.
- 1. Field of the Disclosure
- The present disclosure relates generally to catalytic systems, and more particularly to variation of compositions for catalytic converters which are free of any platinum group metals.
- 2. Background
- A plurality of catalysts within catalytic converters are generally fabricated using a monolithic honeycomb skeleton made of metallic or ceramic materials, which may be coated with a ceramic substrate impregnated with Pt, Pd, and/or other platinum group metals (PGM) as the active catalysts. With the ever stricter standards for acceptable emissions, the demand on PGM continues to increase due to their efficiency in removing pollutants from exhaust. However, this demand, along with other demands for PGM, places a strain on the supply of PGM, which in turn drives up the cost of PGM and therefore catalysts and catalytic converters.
- Accordingly, there is a need for improved cost efficient variation of sample composition, which may be used for manufacture catalyst systems that do not require PGM, and may be capable to work at low conversion temperatures having similar or better efficiency than existing oxidation catalysts, also for controlling air pollution and other environmental application.
- It is an object of the present disclosure to provide variation of compositions for production of Diesel Oxidation Catalyst (DOC), which are free of any platinum group metals, including but not limited to perovskite oxides.
- Suitable variation of compositions for ZPGM catalyst, may produce improvements to oxidize carbon monoxide and hydrocarbons included in diesel exhaust gases, achieving similar or better efficiency than existing internal combustion engines oxidation catalysts, which employs PGM materials.
- Materials suitable for use as ZPGM catalysts include Lanthanum (La), Yttrium (Y), Silver (Ag), Manganese (Mn) and combinations thereof. The disclosed ZPGM DOC systems may include perovskite structures with the characteristic formulation ABO3 or related structures.
- The disclosed variation of compositions for ZPGM catalyst, may be used to prepare washcoat and overcoat material, forming an aqueous slurry, which may be used as coatings to fabricate ZPGM catalysts systems.
- Suitable materials for use as substrates may include cordierite, metallic alloys, foams, microporous materials, zeolites or combinations.
- Carrier metal oxide materials of use in catalysts containing one or more of the aforementioned combinations may also include ZrO2, doped ZrO2 with Lanthanide group metals, Nb2O5, Nb2O5—ZrO2, alumina and doped alumina, TiO2 and doped TiO2.
- A co-precipitation method may be employed for coating La—Mn or Y—Mn perovskite on suitable support oxide materials which may form part of the washcoat slurry and overcoat slurry. Washcoat or overcoat materials and ZPGM catalysts may be deposited on a substrate in a single step.
- Additional element such as Ag for partial substitution of perovskite structure may be employed part of washcoat or overcoat via co-precipitation method. Additional element may also employed as impregnation component.
- A variation of composition, carrier metal oxide and preparation method significantly influence the oxidation property of ZPGM catalyst.
- These and other advantages of the present disclosure may be evident to those skilled in the art, or may become evident upon reading the detailed description of related embodiments, as shown in accompanying drawings.
- The present disclosure can be better understood by referring to the following figures. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the disclosure. In the figures, reference numerals designate corresponding parts throughout the different views.
-
FIG. 1 shows ZPGM catalyst system structures, according to an embodiment. -
FIG. 2 shows light-off test results of a ZPGM catalyst system under exhaust lean condition, according to one embodiment. -
FIG. 3 shows HC light-off test results of a ZPGM catalyst system under exhaust lean condition, according to one embodiment. -
FIG. 4 shows HC light-off test results of a ZPGM catalyst system under exhaust rich condition, according to one embodiment. - The present disclosure is here described in detail with reference to embodiments illustrated in the drawings, which form a part here. Other embodiments may be used and/or other changes may be made without departing from the spirit or scope of the present disclosure. The illustrative embodiments described in the detailed description are not meant to be limiting of the subject matter presented here.
- As used herein, the following terms may have the following definitions:
- “Catalyst system” refers to a system of at least three layers, which may include at least one substrate, a washcoat, and an optional overcoat.
- “Diesel oxidation catalyst” refers to a device which utilizes a chemical process in order to break down pollutants from a diesel engine in the exhaust stream, turning them into less harmful components.
- “Substrate” refers to any suitable material for supporting a catalyst and can be of any shape or configuration, which yields sufficient surface area for deposition of washcoat.
- “Co-precipitation” may refer to the carrying down by a precipitate of substances normally soluble under the conditions employed.
- “Washcoat” refers to at least one coating including at least one oxide solid which may be deposited on a substrate.
- “Overcoat” refers to at least one coating including one or more oxide solid which may be deposited on at least one washcoat.
- “Perovskite” refers to a ZPGM catalyst, having ABO3 structure of material which may be formed by partially substituting element “A” and “B” base metals with suitable non-platinum group metals.
- “Carrier material oxide” refers to materials used for providing a surface for at least one catalyst.
- “Oxygen storage material” refers to materials that can take up oxygen from oxygen-rich feed streams and release oxygen to oxygen-deficient feed streams.
- “ZPGM Transition Metal Catalyst” refers to at least one catalyst which may include at least one transition metal completely free of platinum group metals.
- “Platinum group metals” refers to platinum, palladium, ruthenium, iridium, osmium, and rhodium, unless otherwise stated.
- “Exhaust” refers to discharge of gases, vapor, and fumes created by and released at the end of a process, including hydrocarbons, nitrogen oxide, and carbon monoxide.
- “Conversion” refers to the change from harmful compounds (such as hydrocarbons, carbon monoxide, and nitrogen oxide) into less harmful and/or harmless compounds (such as water, carbon dioxide, and nitrogen).
- “T50” refers to the temperature at which 50% of a material is converted.
- “R Value” refers to the number obtained by dividing the reducing potential by the oxidizing potential.
- “Rich Exhaust” refers to exhaust with an R value above 1.
- “Lean Exhaust” refers to exhaust with an R value below 1.
- In the following detailed description, reference is made to the accompanying illustrations, which form a part hereof. On these illustrations, which are not to scale or to proportion, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative examples described in the detailed description, are not meant to be limiting. Other examples may be used and other changes may be made without departing from the spirit or scope of the present disclosure.
- General Description of Variations of Compositions for ZPGM Oxidation Catalyst Systems
- The present disclosure may employ methods for producing suitable variations of composition for diesel oxidation catalyst system. The ability of such materials to effectively treat internal combustion exhaust gases depends on the capability for oxidation of nitrogen oxide, carbon monoxide oxidation, and unsaturated and saturated hydrocarbon.
- According to one embodiment, variation of composition for ZPGM catalyst, may be formed by using a suitable composition, such as perovskite, having the general formula ABO3 where components “A” and “B” may be any suitable non-platinum group metals. Materials suitable for use as catalyst, which may include, Lanthanum (La), Yttrium (Y), Silver (Ag), Manganese (Mn) and suitable combinations thereof.
- Variation of compositions for ZPGM catalyst may also be formed by partially substituting element “A” of the structure with suitable non-platinum group metal in order to form a structure having the general formula A1-xMxBO3, providing an improved, cost effective ZPGM diesel oxidation catalyst system for internal combustion engines, which may provide an alternative to PGM materials, based in low cost, thermal stability at high temperatures, and excellent oxidation properties.
- System Configuration and Composition
-
FIG. 1 depictsZPGM catalyst system 100 configurations, according to various embodiments. As shown inFIG. 1 , ZPGM catalyst converters may include: asubstrate 102, awashcoat 104, and animpregnation layer 106.Washcoat 104 may include at least support oxides material and may include ZPGM catalysts. Impregnation layers 106 may include the active oxidation ZPGM catalysts components. - According to an embodiment,
ZPGM catalyst system 100 may include a perovskite structure having the general formula ABO3 or related structures resulting from the partial substitution of the A site. Partial substitution of the A site with M element will yield the general formula A1-xMxBO3. “A” may include lanthanum, strontium, or mixtures thereof. “B” may include a single transition metal, including manganese, cobalt, chromium, or a mixture thereof. M may include silver, iron, cerium, niobium or mixtures thereof; and “x” may take values between 0 and 1. The perovskite or related structure may be present in about 1% to about 30% by weight. - Co-Precipitation Method for Preparation
- In one embodiment, method for preparation may be a one-step process, wherein a ZPGM catalyst of ABO3 perovskite is precipitated on carrier metal oxide as
washcoat 104. In this process, components ofwashcoat 104 including carrier metal oxide (CMO) and water may first undergo a milling process to form washcoat slurry. Milling process may take from about 10 minutes to about 10 hours, depending on the batch size, kind of material and particle size desired. Carrier metal oxide materials of use in catalysts containing one or more of the aforementioned combinations may also include ZrO2, doped ZrO2 with Lanthanide group metals, Nb2O5, Nb2O5—ZrO2, alumina and doped alumina, TiO2 and doped TiO2. The co-precipitation process may start with first mixing nitrate solution of lanthanum or yttrium and manganese for a suitable amount of time at room temperature which may last from 1 hour to 5 hours. Afterwards, a silver nitrate solution may be added to the mixture of lanthanum (or yttrium) and manganese nitrate; then the solution may be mixed at room temperature for about 1 hour to 5 hours. When the mixture is ready, it may undergo metallization process by adding the ZPGM nitrate solution to washcoat slurry. Metallization process may last from 1 hour to 5 hours, followed by co-precipitation in presence of suitable compounds. Suitable compounds for co-precipitation of metal salts may include tetraethylammonium hydroxide, other tetraalkylammonium salts, ammonium acetate, ammonium citrate, sodium hydroxide, sodium carbonate and other suitable compounds known in the art. - After co-precipitation process, the aqueous slurry may be coated onto a
suitable substrate 102 aswashcoat 104, followed by a drying step, in which thewashcoated substrate 102 may be dried at room temperature. Afterwards, thewashcoated substrate 102 may undergo a firing stage, in which thewashcoated substrate 102 may be fired at a temperature ranging from 600° C. to 800° C., for approximately 2 hours to 6 hours. In one embodiment, 750° C. for 4 hours. The resultingZPGM catalyst system 100 has a perovskite structure A1-xAgxMnO3, where A is Y or La. - Combination of Co-Precipitation and Impregnation Method for Preparation
- In one embodiment, method for preparation may be a two-step process, wherein a part of ZPGM catalyst of ABO3 perovskite is precipitated on carrier metal oxide as
washcoat 104 and other part of ZPGM catalyst may applied as impregnation component. In this process, components ofwashcoat 104 including carrier metal oxide (CMO) and water may first undergo a milling process to form washcoat slurry. Milling process may take from about 10 minutes to about 10 hours, depending on the batch size, kind of material and particle size desired. Carrier metal oxide materials of use in catalysts containing one or more of the aforementioned combinations may also include ZrO2, doped ZrO2 with Lanthanide group metals, Nb2O5, Nb2O5—ZrO2, alumina and doped alumina, TiO2 and doped TiO2. The co-precipitation process may start with first mixing nitrate solution of lanthanum or yttrium and manganese for a suitable amount of time at room temperature which may last from 1 hour to 5 hours. When the mixture is ready, it may undergo metallization process by adding the ZPGM nitrate solution to washcoat slurry. Metallization process may last from 1 hour to 5 hours, followed by co-precipitation in presence of suitable compounds. Suitable compounds for co-precipitation of metal salts may include tetraethylammonium hydroxide, other tetraalkylammonium salts, ammonium acetate, ammonium citrate, sodium hydroxide, sodium carbonate and other suitable compounds known in the art. After co-precipitation process, the aqueous slurry may be coated onto asuitable substrate 102 aswashcoat 104, followed by a drying step, in which thewashcoated substrate 102 may be dried at room temperature. Afterwards, thewashcoated substrate 102 may undergo a firing stage, in which thewashcoated substrate 102 may be fired at a temperature ranging from 600° C. to 800° C., for approximately 2 hours to 6 hours. In one embodiment, 750° C. for 4 hours. The resultingZPGM catalyst system 100 has a perovskite structure AMnO3, where A is Y or La. - The preparation process may follow by impregnation method. The process may start with mixing step, where a silver nitrate solution may be added to water and the solution may be mixed for a suitable amount of time at room temperature which may last from 1 hour to 2 hours. When the Ag aqueous solution is ready, it may undergo impregnation process, where the mixture may be impregnated onto a previously
washcoated substrate 102 with a perovskite structure AMnO3, where A is Y or La. Subsequently, impregnatedsubstrate 102 may be subjected to a drying process and a firing process. Firing process may last between 3 hours and 6 hours, and may be performed and a temperature between 600° C. and 800° C., preferably 750° C. - Example 1 is a
ZPGM catalyst system 100, prepared by co-precipitation method and includesubstrate 102 andwashcoat 104.Washcoat 104 includes at least a carrier material oxide, such as zirconia and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material. The milled zriconia slurry is mixed with aqueous solution of at least yttrium nitrate, silver nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide. The pH of slurry adjusted to approximately neutral condition. The yttrium inwashcoat 104 is present in about 10% to about 40%, by weight. The silver inwashcoat 104 is present in about 1% to about 10%, by weight. The manganese inwashcoat 104 is present in about 10% to about 30%, by weight. Thewashcoat 104 is deposited on thecordierite substrate 102 and then fired at about 750° C. which last about 4 hours. The resultingZPGM catalyst system 100 has a perovskite structure Y0.8Ag0.2MnO3. - Example 2 is a
ZPGM catalyst system 100, prepared by co-precipitation method and includesubstrate 102 andwashcoat 104.Washcoat 104 includes at least a carrier material oxide, such as alumina and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material. The milled alumina slurry is mixed with aqueous solution of at least lanthanum nitrate, silver nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide. The pH of slurry adjusted to approximately neutral condition. The lanthanum inwashcoat 104 is present in about 10% to about 40%, by weight. The silver inwashcoat 104 is present in about 1% to about 10%, by weight. The manganese inwashcoat 104 is present in about 10% to about 30%, by weight. Thewashcoat 104 is deposited on thecordierite substrate 102 and then fired at about 750° C. which last about 4 hours. The resultingZPGM catalyst system 100 has a perovskite structure La0.8Ag0.2MnO3. -
Example # 3 is aZPGM catalyst system 100, prepared by combination of co-precipitation and impregnation method and includesubstrate 102 and washcoat 104 andimpregnation layer 106.Washcoat 104 includes at least a carrier material oxide, such as zirconia and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material. The milled zirconia slurry is mixed with aqueous solution of at least yttrium nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide. The pH of slurry adjusted to approximately neutral condition. The yttrium inwashcoat 104 is present in about 10% to about 40%, by weight. The manganese inwashcoat 104 is present in about 10% to about 30%, by weight. Thewashcoat 104 is deposited on thecordierite substrate 102 and then fired at about 750° C. which last about 4 hours. Afterward, silver may impregnated onwashcoated substrate 102, following by firing at about 750° C. which last about 4 hours. The silver inimpregnation layer 106 is present in about 1% to about 10%, by weight. The resultingZPGM catalyst system 100 has a perovskite structure YMnO3 doped with Ag. -
Example # 4 is aZPGM catalyst system 100, prepared by combination of co-precipitation and impregnation method and includesubstrate 102 and washcoat 104 andimpregnation layer 106.Washcoat 104 includes at least a carrier material oxide, such as alumina and ZPGM catalyst with perovskite structure. This catalyst system is free of any oxygen storage material. The milled alumina slurry is mixed with aqueous solution of at least yttrium nitrate and manganese nitrate, followed by precipitation by tetraethylammonium hydroxide. The pH of slurry adjusted to approximately neutral condition. The yttrium inwashcoat 104 is present in about 10% to about 40%, by weight. The manganese inwashcoat 104 is present in about 10% to about 30%, by weight. Thewashcoat 104 is deposited on thecordierite substrate 102 and then fired at about 750° C. which last about 4 hours. Afterward, silver may impregnated onwashcoated substrate 102, following by firing at about 750° C. which last about 4 hours. The silver inimpregnation layer 106 is present in about 1% to about 10%, by weight. The resultingZPGM catalyst system 100 has a perovskite structure YMnO3 doped with Ag. -
FIG. 2 shows the light-off test results 200 for theZPGM catalyst system 100 ofexample # 1. The light-off test is performed under exhaust lean condition and the hydrocarbon in feed stream is propylene. The test is performed by increasing the temperature from about 100° C. to 600° C. at a constant rate of 20° C./min. The light-off test results 200 show this catalyst is very active for NO conversion, as well as for CO and THC conversion under lean light off condition. - The T50 for CO may be at about 230° C. and T50 for HC may be at about 250° C. The NO conversion under lean condition may result as oxidation of NO to NO2. Neither NH3 nor N2O formed during reaction. The NO oxidation reach to about 43% conversion at temperature of 396° C.
-
FIG. 3 shows the HC light-off test results 300 for theZPGM catalyst system 100 ofexample # 1,example# 2,example# 3 andexample# 4 for a fresh sample. The lean light-off test is performed under exhaust lean condition and the hydrocarbon in feed stream is propylene. The test is performed by increasing the temperature from about 100° C. to 600° C. at a constant rate of 20° C./min. The HC light-off test results 300 comparison ofexample# 1 andexample# 3 shows that the catalyst prepared by one step co-precipitation are more active oxidation catalyst compare to samples prepared by combination of co-precipitation and impregnation. The HC T50 for catalyst ofexample# 1 andexample# 3 is about 250° C. and 443° C. respectively. Comparison of catalysts ofexample# 1 andexample# 2 shows the effect of composition variation on oxidation activity. The catalyst ofexample# 1 with Y—Ag—Mn—ZrO2 composition shows better HC conversion than catalyst ofexample# 2 with La—Ag—Mn—Al2O3 composition at the same lean condition. The HC T50 ofexample# 2 is about 432° C. Comparison ofexample# 3 andexample# 4 light off curves shows the improvement of oxidation property by using ZrO2 instead of Al2O3 carrier metal oxide. -
FIG. 4 shows the HC light-off test results 400 for theZPGM catalyst system 100 ofexample # 1,example# 2,example# 3 andexample# 4 for fresh sample. The light-off test is performed under exhaust rich condition. The hydrocarbon in feed stream is propylene. The test is performed by increasing the temperature from about 100° C. to 600° C. at a constant rate of 20° C./min. The HC light-off test results 400 compare the combination effect of variation of composition, variation of carrier metal oxide and variation of preparation method. The HC T50 for fresh catalyst ofexample# 1 is 312° C. The HC T50 for fresh catalyst ofexample# 4 is 351° C. However, the HC T50 for fresh catalyst ofexample# 2 is 480° C. and the HC T50 for fresh catalyst ofexample# 3 is 500° C. - While various aspects of production methods may be described in the present disclosure, other aspects and embodiments may be contemplated. The various aspects and embodiments disclosed here are for purpose of illustration, and are not intended to be limiting with the scope and spirit being indicated by the following claims.
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Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104437540A (en) * | 2014-12-31 | 2015-03-25 | 安徽省元琛环保科技有限公司 | Phosphorus-resistant low-temperature SCR denitration catalyst and preparation method thereof |
US9216383B2 (en) | 2013-03-15 | 2015-12-22 | Clean Diesel Technologies, Inc. | System and method for two and three way ZPGM catalyst |
US9227177B2 (en) | 2013-03-15 | 2016-01-05 | Clean Diesel Technologies, Inc. | Coating process of Zero-PGM catalysts and methods thereof |
US9259716B2 (en) | 2013-03-15 | 2016-02-16 | Clean Diesel Technologies, Inc. | Oxidation catalyst systems compositions and methods thereof |
WO2016069887A1 (en) * | 2014-10-30 | 2016-05-06 | Clean Diesel Technologies, Inc. | Thermally stable zero pgm catalysts system for twc application |
US9475005B2 (en) | 2014-06-06 | 2016-10-25 | Clean Diesel Technologies, Inc. | Three-way catalyst systems including Fe-activated Rh and Ba-Pd material compositions |
US9486784B2 (en) | 2013-10-16 | 2016-11-08 | Clean Diesel Technologies, Inc. | Thermally stable compositions of OSM free of rare earth metals |
US9511353B2 (en) | 2013-03-15 | 2016-12-06 | Clean Diesel Technologies, Inc. (Cdti) | Firing (calcination) process and method related to metallic substrates coated with ZPGM catalyst |
US9511350B2 (en) | 2013-05-10 | 2016-12-06 | Clean Diesel Technologies, Inc. (Cdti) | ZPGM Diesel Oxidation Catalysts and methods of making and using same |
US9511358B2 (en) | 2013-11-26 | 2016-12-06 | Clean Diesel Technologies, Inc. | Spinel compositions and applications thereof |
US9511355B2 (en) | 2013-11-26 | 2016-12-06 | Clean Diesel Technologies, Inc. (Cdti) | System and methods for using synergized PGM as a three-way catalyst |
US9545626B2 (en) | 2013-07-12 | 2017-01-17 | Clean Diesel Technologies, Inc. | Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate |
WO2017056063A1 (en) * | 2015-10-01 | 2017-04-06 | Clean Diesel Technologies, Inc. | Nitrogen oxide oxidation activity of pseudo-brookite compositions as zero-pgm catalysts for diesel oxidation applications |
US9700841B2 (en) | 2015-03-13 | 2017-07-11 | Byd Company Limited | Synergized PGM close-coupled catalysts for TWC applications |
US9731279B2 (en) | 2014-10-30 | 2017-08-15 | Clean Diesel Technologies, Inc. | Thermal stability of copper-manganese spinel as Zero PGM catalyst for TWC application |
US9771534B2 (en) | 2013-06-06 | 2017-09-26 | Clean Diesel Technologies, Inc. (Cdti) | Diesel exhaust treatment systems and methods |
US9861964B1 (en) | 2016-12-13 | 2018-01-09 | Clean Diesel Technologies, Inc. | Enhanced catalytic activity at the stoichiometric condition of zero-PGM catalysts for TWC applications |
US9951706B2 (en) | 2015-04-21 | 2018-04-24 | Clean Diesel Technologies, Inc. | Calibration strategies to improve spinel mixed metal oxides catalytic converters |
US10265684B2 (en) | 2017-05-04 | 2019-04-23 | Cdti Advanced Materials, Inc. | Highly active and thermally stable coated gasoline particulate filters |
US10533472B2 (en) | 2016-05-12 | 2020-01-14 | Cdti Advanced Materials, Inc. | Application of synergized-PGM with ultra-low PGM loadings as close-coupled three-way catalysts for internal combustion engines |
EP3714974A1 (en) * | 2019-03-29 | 2020-09-30 | Johnson Matthey Public Limited Company | Lanthanum-based perovskite-type catalyst compositions stable to ageing in three-way catalysis |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10738256B1 (en) | 2017-12-22 | 2020-08-11 | TerSol, LLC | Fuel additive systems, compositions, and methods |
CN108993477A (en) * | 2018-06-27 | 2018-12-14 | 江苏大学 | A kind of preparation method and application of the modified SCR denitration of novel neodymium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090324468A1 (en) * | 2008-06-27 | 2009-12-31 | Golden Stephen J | Zero platinum group metal catalysts |
WO2012093600A1 (en) * | 2011-01-05 | 2012-07-12 | 本田技研工業株式会社 | Exhaust gas purification catalyst and exhaust gas purification catalyst structure |
Family Cites Families (298)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3284370A (en) | 1962-12-31 | 1966-11-08 | Monsanto Co | Alumina supported copper oxide-rare earth oxide catalyst compositions |
US3473987A (en) | 1965-07-13 | 1969-10-21 | Du Pont | Method of making thin-walled refractory structures |
US3493325A (en) | 1967-09-12 | 1970-02-03 | Monsanto Co | Process for catalytically treating exhaust gases |
US4029738A (en) | 1971-12-02 | 1977-06-14 | Societe Francaise Des Produits Pour Catalyse | Decomposing nitrogen oxides with nickel-iron-chromium catalysts |
US3896616A (en) | 1972-04-21 | 1975-07-29 | Engelhard Min & Chem | Process and apparatus |
US3904553A (en) | 1973-08-20 | 1975-09-09 | Corning Glass Works | Thermally stable composite base metal oxide catalysts |
US4062810A (en) | 1974-03-14 | 1977-12-13 | Hoechst Aktiengesellschaft | Carrier-supported catalyst |
IL50024A (en) | 1976-07-12 | 1979-05-31 | Israel State | Secondary cells |
DE2745188C3 (en) | 1977-10-07 | 1980-05-08 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Shaped catalyst, process for its manufacture and use |
US4199328A (en) | 1978-12-28 | 1980-04-22 | Texaco Inc. | Process for producing methane from naphtha |
JPS5610333A (en) * | 1979-07-06 | 1981-02-02 | Toyota Motor Corp | Catalyst for cleaning up exhaust gas and manufacture of said catalyst |
JPS5610334A (en) | 1979-07-06 | 1981-02-02 | Toyota Motor Corp | Catalyst for cleaning up exhaust gas and manufacture of said catalyst |
US4297150A (en) | 1979-07-07 | 1981-10-27 | The British Petroleum Company Limited | Protective metal oxide films on metal or alloy substrate surfaces susceptible to coking, corrosion or catalytic activity |
US4297328A (en) | 1979-09-28 | 1981-10-27 | Union Carbide Corporation | Three-way catalytic process for gaseous streams |
US4414023A (en) | 1982-04-12 | 1983-11-08 | Allegheny Ludlum Steel Corporation | Iron-chromium-aluminum alloy and article and method therefor |
JPS606061U (en) | 1983-06-25 | 1985-01-17 | 村井 邦彦 | air house vinyl unit membrane |
US4891050A (en) | 1985-11-08 | 1990-01-02 | Fuel Tech, Inc. | Gasoline additives and gasoline containing soluble platinum group metal compounds and use in internal combustion engines |
US4892562A (en) | 1984-12-04 | 1990-01-09 | Fuel Tech, Inc. | Diesel fuel additives and diesel fuels containing soluble platinum group metal compounds and use in diesel engines |
US5749928A (en) | 1984-12-04 | 1998-05-12 | Platinum Plus, Inc. | Method for reducing emissions from or increasing the utilizable energy of fuel for powering internal combustion engines |
JPS61146348A (en) | 1984-12-17 | 1986-07-04 | Toyota Central Res & Dev Lab Inc | Oxidizing catalyst |
US4686155A (en) | 1985-06-04 | 1987-08-11 | Armco Inc. | Oxidation resistant ferrous base foil and method therefor |
US4629472A (en) | 1985-06-19 | 1986-12-16 | Fuel Tech, Inc. | Method and apparatus for improving combustion, thermal efficiency and reducing emissions by treating fuel |
US4673556A (en) | 1985-11-08 | 1987-06-16 | General Motors Corporation | Method of simultaneous oxidation of carbon monoxide and unburned fuel in methanol vehicle exhaust |
US4790982A (en) | 1986-04-07 | 1988-12-13 | Katalistiks International, Inc. | Metal-containing spinel composition and process of using same |
DE8717392U1 (en) | 1987-03-16 | 1989-05-18 | Emitec Emissionstechnologie | |
US4906443A (en) | 1987-10-26 | 1990-03-06 | Ford Motor Company | Construction, method of making and method of using alumina-supported, precious metal oxidation catalysts |
US5584894A (en) | 1992-07-22 | 1996-12-17 | Platinum Plus, Inc. | Reduction of nitrogen oxides emissions from vehicular diesel engines |
US6051040A (en) | 1988-12-28 | 2000-04-18 | Clean Diesel Technologies, Inc. | Method for reducing emissions of NOx and particulates from a diesel engine |
CA1340871C (en) | 1988-12-28 | 2000-01-04 | Robert W. Epperly | Method for reducing emissions from or increasing the utilizable energy of fuel for powering internal combustion engines |
US5266083A (en) | 1988-12-28 | 1993-11-30 | Platinum Plus, Inc. | Method for reducing pollution emissions from a diesel engine |
US5501714A (en) | 1988-12-28 | 1996-03-26 | Platinum Plus, Inc. | Operation of diesel engines with reduced particulate emission by utilization of platinum group metal fuel additive and pass-through catalytic oxidizer |
US5693106A (en) | 1992-07-22 | 1997-12-02 | Platinum Plus, Inc. | Platinum metal fuel additive for water-containing fuels |
US5034020A (en) | 1988-12-28 | 1991-07-23 | Platinum Plus, Inc. | Method for catalyzing fuel for powering internal combustion engines |
DE3940758A1 (en) | 1989-12-09 | 1991-06-13 | Degussa | METHOD FOR PURIFYING THE EXHAUST GAS FROM DIESEL ENGINES |
US5238898A (en) | 1989-12-29 | 1993-08-24 | Mobil Oil Corp. | Catalyst and process for upgrading methane to higher hydrocarbons |
DE69129644T2 (en) | 1990-04-03 | 1998-12-10 | Ngk Insulators Ltd | Highly heat-resistant metallic monolith and process for its manufacture |
JP3091246B2 (en) | 1990-04-03 | 2000-09-25 | 日本碍子株式会社 | Heat-resistant metallic monolith and method for producing the same |
US5063193A (en) | 1990-06-06 | 1991-11-05 | General Motors Corporation | Base metal automotive exhaust catalysts with improved activity and stability and method of making the catalysts |
US5168836A (en) | 1990-08-08 | 1992-12-08 | Catalytic Solutions, Inc. | Emission control system |
CN1060793A (en) | 1990-10-22 | 1992-05-06 | 华东化工学院 | Multieffective non-noble metal catalyst |
US5203166A (en) | 1991-02-22 | 1993-04-20 | Miller John W | Method and apparatus for treating diesel exhaust gas to remove fine particulate matter |
US5162284A (en) | 1991-08-05 | 1992-11-10 | Exxon Research And Engineering Co. | Copper promoted cobalt-manganese spinel catalyst and method for making the catalyst for Fischer-Tropsch synthesis |
US5185305A (en) | 1991-11-08 | 1993-02-09 | Ford Motor Company | Catalyst system for treating the exhaust from a lean-burn gasoline-fueled engine |
US5175132A (en) | 1991-11-19 | 1992-12-29 | Ketcham Thomas D | Sinterable ceramic compositions |
DE4213018C1 (en) | 1992-04-21 | 1993-12-09 | Degussa | Catalyst for the oxidative purification of exhaust gases from diesel engines |
US5747410A (en) | 1992-07-03 | 1998-05-05 | Kabushiki Kaisha Riken | Exhaust gas cleaner and method of cleaning exhaust gas |
US5743922A (en) | 1992-07-22 | 1998-04-28 | Nalco Fuel Tech | Enhanced lubricity diesel fuel emulsions for reduction of nitrogen oxides |
US5580553A (en) | 1992-08-21 | 1996-12-03 | Nippon Starch Chemical Co., Ltd. | Cosmetic composition containing alkenylsuccinic acid ester of saccharide |
WO1994011467A1 (en) | 1992-11-10 | 1994-05-26 | Platinum Plus, Inc. | Method for reducing harmful emissions from a diesel engine equipped with a particulate trap |
EP0605251A1 (en) | 1992-12-28 | 1994-07-06 | Kabushiki Kaisha Riken | Exhaust gas cleaner |
GB9227152D0 (en) | 1992-12-31 | 1993-02-24 | Dow Corning | Process for loading ceramic monolith with catalyst |
US6003303A (en) | 1993-01-11 | 1999-12-21 | Clean Diesel Technologies, Inc. | Methods for reducing harmful emissions from a diesel engine |
US5364517A (en) | 1993-02-19 | 1994-11-15 | Chevron Research And Technology Company | Perovskite-spinel FCC NOx reduction additive |
AU7359194A (en) | 1993-07-12 | 1995-02-13 | Platinum Plus, Inc. | Method for reducing emissions of nox and particulates from a diesel engine |
US5404841A (en) | 1993-08-30 | 1995-04-11 | Valentine; James M. | Reduction of nitrogen oxides emissions from diesel engines |
US5968462A (en) | 1994-02-04 | 1999-10-19 | Toyota Jidosha Kabushiki Kaisha | Process for purifying exhaust gases |
US5708233A (en) | 1994-02-22 | 1998-01-13 | Kabushiki Kaisha Ohara | Thermoelectric semiconductor material |
US6232253B1 (en) | 1994-09-23 | 2001-05-15 | Ford Global Technologies, Inc. | Sol-gel alumina membrane for lean NOx catalysts and method of making same |
US5732548A (en) | 1994-10-07 | 1998-03-31 | Platinum Plus, Inc. | Method for reducing harmful emissions from two-stroke engines |
KR0136893B1 (en) | 1994-11-03 | 1998-04-25 | 강박광 | Selective catalytic reduction of nitrogen oxide |
DE19546484A1 (en) | 1995-12-13 | 1997-07-10 | Daimler Benz Ag | Process for operating a cleaning system for gases and a cleaning system for gases |
US5721188A (en) | 1995-01-17 | 1998-02-24 | Engelhard Corporation | Thermal spray method for adhering a catalytic material to a metallic substrate |
US6129834A (en) | 1995-05-05 | 2000-10-10 | W. R. Grace & Co. -Conn. | NOx reduction compositions for use in FCC processes |
CA2227141A1 (en) | 1995-07-18 | 1997-02-06 | Clean Diesel Technologies, Inc. | Methods for reducing harmful emissions from a diesel engine |
WO1997009523A1 (en) | 1995-09-01 | 1997-03-13 | Clean Diesel Technologies, Inc. | Methods for improving the operation of a catalyzed engine |
US5898015A (en) | 1995-09-19 | 1999-04-27 | Ngk Spark Plug Co., Ltd. | Material for absorbing nitrogen oxides comprising hollandite-type complex oxide |
DE29517373U1 (en) | 1995-11-02 | 1996-03-07 | Trw Repa Gmbh | Airbag side impact protection device for vehicle occupants |
DE19546481C2 (en) | 1995-12-13 | 1998-08-13 | Daimler Benz Ag | Catalyst and process for its manufacture and use |
WO1997028358A1 (en) | 1996-01-31 | 1997-08-07 | Clean Diesel Technologies, Inc. | Method and apparatus for reducing harmful emissions from a diesel engine by post combustion catalyst injection |
US6696389B1 (en) | 1996-02-23 | 2004-02-24 | Daimlerchrysler Ag | Process and apparatus for cleaning a gas flow |
WO1997036676A1 (en) | 1996-04-02 | 1997-10-09 | Clean Diesel Technologies, Inc. | Method and apparatus for reducing harmful emissions from a diesel engine by urea injection scr |
JPH09271665A (en) * | 1996-04-04 | 1997-10-21 | Nippon Soken Inc | Exhaust gas purifying catalyst |
US5939354A (en) | 1996-04-10 | 1999-08-17 | Catalytic Solutions, Inc. | Perovskite-type metal oxide compounds and method for preparing the compounds |
US5977017A (en) | 1996-04-10 | 1999-11-02 | Catalytic Solutions, Inc. | Perovskite-type metal oxide compounds |
US7014825B2 (en) | 1996-04-10 | 2006-03-21 | Catalytic Solutions, Inc. | Perovskite-type metal oxide compounds and methods of making and using thereof |
JP3454334B2 (en) | 1996-06-18 | 2003-10-06 | トヨタ自動車株式会社 | Exhaust gas purification method and device |
US5809774A (en) | 1996-11-19 | 1998-09-22 | Clean Diesel Technologies, Inc. | System for fueling and feeding chemicals to internal combustion engines for NOx reduction |
AU5445598A (en) | 1996-11-20 | 1998-06-10 | Clean Diesel Technologies, Inc. | Selective catalytic no reduction utilizing urea without catalyst fouling |
US6921738B2 (en) | 1996-12-06 | 2005-07-26 | Engelhard Corporation | Catalytic metal plate |
WO1998028070A1 (en) | 1996-12-20 | 1998-07-02 | Clean Diesel Technologies, Inc. | Method and apparatus for reducing harmful emissions from a lean-burn engine by urea injection scr |
ES2232936T3 (en) | 1997-01-31 | 2005-06-01 | Clean Diesel Technologies Inc. | METHOD FOR REDUCING EMISSIONS OF A GASOLINE ENGINE EQUIPPED WITH A THREE-WAY CATALYTIC CONVERTER. |
US5921080A (en) | 1997-03-07 | 1999-07-13 | The Lubrizol Corporation | Oxidation catalytic converter system for small spark ignited engines |
US6361754B1 (en) | 1997-03-27 | 2002-03-26 | Clean Diesel Technologies, Inc. | Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction |
US5809775A (en) | 1997-04-02 | 1998-09-22 | Clean Diesel Technologies, Inc. | Reducing NOx emissions from an engine by selective catalytic reduction utilizing solid reagents |
US6063350A (en) | 1997-04-02 | 2000-05-16 | Clean Diesel Technologies, Inc. | Reducing nox emissions from an engine by temperature-controlled urea injection for selective catalytic reduction |
US5976475A (en) | 1997-04-02 | 1999-11-02 | Clean Diesel Technologies, Inc. | Reducing NOx emissions from an engine by temperature-controlled urea injection for selective catalytic reduction |
US5924280A (en) | 1997-04-04 | 1999-07-20 | Clean Diesel Technologies, Inc. | Reducing NOx emissions from an engine while maximizing fuel economy |
TW509719B (en) | 1997-04-17 | 2002-11-11 | Clean Diesel Tech Inc | Method for reducing emissions from a diesel engine |
US5968464A (en) | 1997-05-12 | 1999-10-19 | Clean Diesel Technologies, Inc. | Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction |
DE19724545A1 (en) | 1997-06-11 | 1998-12-24 | Basf Ag | Storage catalytic converter |
US6124130A (en) | 1998-08-10 | 2000-09-26 | Clean Diesel Technologies, Inc. | Microbial catalyst for desulfurization of fossil fuels |
US6279603B1 (en) | 1998-10-01 | 2001-08-28 | Ambac International | Fluid-cooled injector |
JP2002530175A (en) | 1998-11-20 | 2002-09-17 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Catalyst-carrying filter |
WO2000030739A1 (en) | 1998-11-24 | 2000-06-02 | Clean Diesel Technologies, Inc. | Catalyzed particulate oxidizer for reducing particulate emissions from a diesel engine and method |
EP1180063A2 (en) | 1999-04-19 | 2002-02-20 | Engelhard Corporation | Catylyst composition comprising ceria and a platinum group metal |
EP1189841A4 (en) | 1999-04-26 | 2007-04-11 | Ferro Corp | Continuous calcination of mixed metal oxides |
WO2000075643A1 (en) | 1999-06-09 | 2000-12-14 | Clean Diesel Technologies, Inc. | METHODS AND COMPOSITIONS FOR ASSURING REDUCTION OF NOx EMISSIONS FROM AN ENGINE BY SELECTIVE CATALYTIC REDUCTION |
US6293096B1 (en) | 1999-06-23 | 2001-09-25 | Southwest Research Institute | Multiple stage aftertreatment system |
US6573213B1 (en) | 1999-07-16 | 2003-06-03 | Degussa Ag | Metal catalysts |
US6632557B1 (en) | 1999-10-26 | 2003-10-14 | The Gillette Company | Cathodes for metal air electrochemical cells |
CA2389202A1 (en) | 1999-11-25 | 2001-05-31 | Ikuo Nagashima | Catalyst for exothermic or endothermic reaction, catalyst for water-gas-shift reaction and catalyst for selective oxidation of carbon monoxide, and plate-fin heat exchange type reformer |
AU3076201A (en) | 1999-12-20 | 2001-07-03 | Eltron Research, Inc. | Catalysts and methods for low-temperature destruction of vocs in air and selective removal of co |
JP3489048B2 (en) | 2000-02-01 | 2004-01-19 | 日産自動車株式会社 | Exhaust gas purification catalyst |
US6606856B1 (en) | 2000-03-03 | 2003-08-19 | The Lubrizol Corporation | Process for reducing pollutants from the exhaust of a diesel engine |
AU2001259623A1 (en) | 2000-05-08 | 2001-11-20 | Clean Diesel Technologies, Inc. | Low-emissions diesel fuel |
US7063729B2 (en) | 2000-05-09 | 2006-06-20 | Clean Diesel Technologies, Inc. | Low-emissions diesel fuel |
DE10023439A1 (en) | 2000-05-12 | 2001-11-22 | Dmc2 Degussa Metals Catalysts | Process for removing nitrogen oxides and soot particles from the lean exhaust gas of an internal combustion engine and exhaust gas purification system therefor |
US20050188605A1 (en) | 2000-08-01 | 2005-09-01 | Valentine James M. | Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst |
US20050160663A1 (en) | 2000-08-01 | 2005-07-28 | Valentine James M. | Cleaner burning diesel fuel |
GB2381534B (en) | 2000-08-01 | 2004-08-18 | Clean Diesel Tech Inc | Low-Emissions Diesel Fuel Blend |
WO2002026918A1 (en) | 2000-09-28 | 2002-04-04 | Clean Diesel Technologies, Inc. | Low-emissions diesel fuel emulsions |
US6468941B1 (en) | 2000-10-17 | 2002-10-22 | Delphi Technologies, Inc. | Niobium containing zirconium-cerium based soild solutions |
JP4144174B2 (en) | 2000-10-25 | 2008-09-03 | トヨタ自動車株式会社 | Exhaust gas purification device |
US7641875B1 (en) | 2000-11-15 | 2010-01-05 | Catalytic Solutions, Inc. | Mixed-phase ceramic oxide three-way catalyst formulations and methods for preparing the catalysts |
US6624113B2 (en) | 2001-03-13 | 2003-09-23 | Delphi Technologies, Inc. | Alkali metal/alkaline earth lean NOx catalyst |
US6576587B2 (en) | 2001-03-13 | 2003-06-10 | Delphi Technologies, Inc. | High surface area lean NOx catalyst |
US6696386B2 (en) | 2001-05-10 | 2004-02-24 | Matsushita Electric Industrial Co., Ltd. | Exhaust gas purification catalyst and exhaust gas purification material |
KR100392943B1 (en) | 2001-05-16 | 2003-07-28 | (주)케이에이치 케미컬 | Catalyst for purification of diesel engine exhaust gas |
JP5189236B2 (en) | 2001-07-25 | 2013-04-24 | 日本碍子株式会社 | Exhaust gas purification honeycomb structure and exhaust gas purification honeycomb catalyst body |
EP1287886A1 (en) | 2001-08-09 | 2003-03-05 | OMG AG & Co. KG | Catalyst for cleaning of exhaust gases of a combustion engine |
DE60226070T2 (en) | 2001-11-09 | 2009-06-25 | Clean Diesel Technologies Inc., Stamford | CONTINUOUS ADJUSTABLE CONTROL OF ENVIRONMENTAL POLLUTION, REDUCING CHEMICALS FOR COMBUSTION SOURCES |
EP1316354A1 (en) | 2001-11-30 | 2003-06-04 | OMG AG & Co. KG | Catalyst for the reduction of nitrogen oxides in exhaust gas of lean burn engines |
US20050160724A1 (en) | 2002-02-04 | 2005-07-28 | Valentine James M. | Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst and lightly catalyzed diesel oxidation catalyst |
US6948926B2 (en) | 2002-02-04 | 2005-09-27 | Clean Diesel Technologies, Inc. | Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst |
US20050164139A1 (en) | 2002-02-04 | 2005-07-28 | Valentine James M. | Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst and lightly catalyzed diesel particulate filter |
WO2003068363A1 (en) | 2002-02-12 | 2003-08-21 | Clean Diesel Technologies, Inc. | Multi-stage exhaust gas purifier |
JP4628676B2 (en) | 2002-02-15 | 2011-02-09 | 株式会社アイシーティー | Internal combustion engine exhaust gas purification catalyst, method for producing the same, and internal combustion engine exhaust gas purification method |
US6915629B2 (en) | 2002-03-07 | 2005-07-12 | General Motors Corporation | After-treatment system and method for reducing emissions in diesel engine exhaust |
WO2003083017A1 (en) | 2002-03-22 | 2003-10-09 | Clean Diesel Technologies, Inc. | Catalytic metal additive concentrate and method of making and using |
JP2003293729A (en) | 2002-04-02 | 2003-10-15 | Purearth Inc | Carbon particle reducing device |
EP1378289A3 (en) | 2002-04-18 | 2004-02-04 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Platinum-group-metal free catalytic washcoats for particulate exhaust gas filter applications |
US7332135B2 (en) | 2002-10-22 | 2008-02-19 | Ford Global Technologies, Llc | Catalyst system for the reduction of NOx and NH3 emissions |
US7071141B2 (en) | 2002-10-24 | 2006-07-04 | Ford Global Technologies, Llc | Perovskite catalyst system for lean burn engines |
US6946013B2 (en) | 2002-10-28 | 2005-09-20 | Geo2 Technologies, Inc. | Ceramic exhaust filter |
DE10252103A1 (en) | 2002-11-08 | 2004-05-27 | Süd-Chemie AG | Mixed oxide catalyst, e.g. for carbon monoxide oxidation in fuel cells or automobile exhaust treatment, comprises copper, manganese and cerium |
US20050265920A1 (en) | 2002-11-11 | 2005-12-01 | Conocophillips Company | Supports and catalysts comprising rare earth aluminates, and their use in partial oxidation |
US6774080B2 (en) | 2002-11-25 | 2004-08-10 | Delphi Technologies, Inc. | Gas treatment device comprising SMSI material and methods for making and using the same |
AU2003299644A1 (en) | 2002-12-17 | 2004-07-22 | Clean Diesel Technologies, Inc. | Nox control for ic engines |
US7160832B2 (en) | 2003-06-16 | 2007-01-09 | Umicore Ag & Co. Kg | Catalyst system for generating carbon monoxide for use with automotive catalysts |
AU2004304919C1 (en) | 2003-12-05 | 2010-10-21 | Intercat, Inc. | Mixed metal oxide sorbents |
US7875250B2 (en) | 2003-12-11 | 2011-01-25 | Umicore Ag & Co. Kg | Exhaust treatment device, and methods of making the same |
US20090004083A1 (en) | 2003-12-17 | 2009-01-01 | Valentine James M | NOx control for IC engines |
JP2005180262A (en) | 2003-12-18 | 2005-07-07 | Tetsuo Toyoda | Particulate matter reducing device |
US7291576B2 (en) | 2003-12-30 | 2007-11-06 | Ford Global Technologies, Llc | SOx trap for diesel and lean-burn gasoline automotive applications |
US7216681B2 (en) | 2004-03-05 | 2007-05-15 | Clean Diesel Technologies, Inc. | Gravity feed ball-in-seat valve with extension unit for dosing fuel additives |
US20050197244A1 (en) | 2004-03-05 | 2005-09-08 | L'vovich Moroz B. | Exhaust treatment system and catalyst system |
JP4199691B2 (en) | 2004-03-25 | 2008-12-17 | 田中貴金属工業株式会社 | catalyst |
US7374729B2 (en) | 2004-03-30 | 2008-05-20 | Basf Catalysts Llc | Exhaust gas treatment catalyst |
US20060166816A1 (en) | 2004-06-23 | 2006-07-27 | Catalytic Solutions, Inc. | Catalysts and processes for selective hydrogenation of acetylene and dienes in light olefin feedstreams |
CA2573012A1 (en) | 2004-07-01 | 2006-01-19 | Clean Diesel Technologies, Inc. | Fuel additive concentrate dosing system |
GB0420245D0 (en) | 2004-09-13 | 2004-10-13 | Johnson Matthey Plc | Improvements in catalyst coatings |
US7129194B2 (en) | 2004-09-23 | 2006-10-31 | Corning Incorporated | Catalyst system with improved corrosion resistance |
US8318629B2 (en) | 2004-10-14 | 2012-11-27 | Catalytic Solutions, Inc. | Platinum group metal-free catalysts for reducing the ignition temperature of particulates on a diesel particulate filter |
EP1656993A1 (en) | 2004-11-03 | 2006-05-17 | Albemarle Netherlands B.V. | Alkylation catalyst, its preparation and use |
JP4245051B2 (en) | 2004-12-14 | 2009-03-25 | 日産自動車株式会社 | Exhaust gas purification catalyst |
CA2592259A1 (en) | 2004-12-23 | 2006-07-06 | Clean Diesel Technologies, Inc. | Engine-on pulsed fuel additive concentrate dosing system and controller |
BRPI0607613A2 (en) | 2005-02-28 | 2009-09-22 | Catalytic Solutions Inc | catalyst and method for reducing nitrogen oxides in hydrocarbon or alcohol exhaust streams |
DE102005019000A1 (en) | 2005-04-22 | 2006-10-26 | Degussa Ag | Catalytically coated support, process for its preparation and thus equipped reactor and its use |
US20060260185A1 (en) | 2005-04-28 | 2006-11-23 | Clean Diesel Technologies, Inc. | Fuel Additive and Catalyst Treatment Process |
FR2886636B1 (en) * | 2005-06-02 | 2007-08-03 | Inst Francais Du Petrole | INORGANIC MATERIAL HAVING METALLIC NANOPARTICLES TRAPPED IN A MESOSTRUCTURED MATRIX |
US7803338B2 (en) | 2005-06-21 | 2010-09-28 | Exonmobil Research And Engineering Company | Method and apparatus for combination catalyst for reduction of NOx in combustion products |
CN101076403B (en) | 2005-06-27 | 2010-05-26 | 揖斐电株式会社 | Honeycomb structure body |
AU2006269980A1 (en) | 2005-07-18 | 2007-01-25 | Clean Diesel Technologies, Inc. | Fuel additive and fuel treatment process |
US8242045B2 (en) | 2006-01-12 | 2012-08-14 | Siemens Energy, Inc. | Ceramic wash-coat for catalyst support |
FR2898887B1 (en) | 2006-03-21 | 2008-05-02 | Rhodia Recherches & Tech | COMPOSITION BASED ON ZIRCONIUM OXIDE AND CERIUM OXIDE WITH HIGH REDUCIBILITY AND STABLE SPECIFIC SURFACE PROCESS FOR THE PREPARATION AND USE IN THE TREATMENT OF EXHAUST GASES |
US7943104B2 (en) | 2006-04-13 | 2011-05-17 | Umicore Ag & Co. Kg | CE-ZR based solid solutions and methods for making and using the same |
MX2008014631A (en) | 2006-05-18 | 2008-11-28 | Clean Diesel Tech Inc | Improvements in diesel particulate control. |
US7576031B2 (en) | 2006-06-09 | 2009-08-18 | Basf Catalysts Llc | Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function |
EP2040835A4 (en) | 2006-06-12 | 2010-12-15 | Nanox Inc | Process for optimizing the catalytic activity of a perovskite-based catalyst |
WO2007145030A1 (en) | 2006-06-15 | 2007-12-21 | Murata Manufacturing Co., Ltd. | Thermoelectric material |
US7749472B2 (en) | 2006-08-14 | 2010-07-06 | Basf Corporation | Phosgard, a new way to improve poison resistance in three-way catalyst applications |
US8389432B2 (en) | 2006-09-25 | 2013-03-05 | Umicore Ag & Co. Kg | Structured automotive catalyst with improved thermal ageing stability |
KR101120699B1 (en) | 2006-11-20 | 2012-03-22 | 나노스텔라 인코포레이티드 | Method for producing heterogeneous catalysts containing metal nanoparticles |
US7534738B2 (en) | 2006-11-27 | 2009-05-19 | Nanostellar, Inc. | Engine exhaust catalysts containing palladium-gold |
US20080190099A1 (en) | 2006-12-20 | 2008-08-14 | Aleksey Yezerets | System and method for inhibiting uncontrolled regeneration of a particulate filter for an internal combustion engine |
US8802582B2 (en) | 2007-01-09 | 2014-08-12 | Catalytic Solutions, Inc. | High temperature ammonia SCR catalyst and method of using the catalyst |
US7767175B2 (en) | 2007-01-09 | 2010-08-03 | Catalytic Solutions, Inc. | Ammonia SCR catalyst and method of using the catalyst |
US7527776B2 (en) | 2007-01-09 | 2009-05-05 | Catalytic Solutions, Inc. | Ammonia SCR catalyst and method of using the catalyst |
JP2008221200A (en) | 2007-02-16 | 2008-09-25 | Japan Science & Technology Agency | Reforming catalyst of oxygen-containing hydrocarbon, manufacturing method of hydrogen or synthetic gas using it and fuel cell system |
DE102007042618A1 (en) | 2007-09-07 | 2009-03-12 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Process for producing an oxide layer on a metallic foil, foil with oxide layer and honeycomb body produced therefrom |
US20090220697A1 (en) | 2008-02-29 | 2009-09-03 | William Peter Addiego | Washcoat composition and methods of making and using |
FR2928364B1 (en) | 2008-03-05 | 2011-10-14 | Rhodia Operations | COMPOSITION BASED ON A ZIRCONIUM OXIDE, A TITANIUM OXIDE OR A MIXED OXIDE OF ZIRCONIUM AND TITANIUM ON AN ALUMINUM SUPPORT, METHODS OF PREPARATION AND USE AS A CATALYST |
US8716165B2 (en) | 2008-04-30 | 2014-05-06 | Corning Incorporated | Catalysts on substrates and methods for providing the same |
US7998444B2 (en) | 2008-04-30 | 2011-08-16 | Johnson Matthey Inc. | Method of reducing nitrogen oxides in a gas stream with vaporized ammonia |
US8220274B2 (en) | 2008-05-15 | 2012-07-17 | Johnson Matthey Inc. | Emission reduction method for use with a heat recovery steam generation system |
US8496896B2 (en) * | 2008-06-27 | 2013-07-30 | Catalytic Solutions, Inc. | Zero platinum group metal catalysts |
KR100962082B1 (en) | 2008-07-31 | 2010-06-09 | 희성촉매 주식회사 | Catalysts for NOx reduction employing H2 and a method of reducing NOx |
US20100062293A1 (en) | 2008-09-10 | 2010-03-11 | Advent Technologies | Internal reforming alcohol high temperature pem fuel cell |
US8524185B2 (en) | 2008-11-03 | 2013-09-03 | Basf Corporation | Integrated SCR and AMOx catalyst systems |
KR100999635B1 (en) | 2008-11-21 | 2010-12-08 | 기아자동차주식회사 | Diesel oxidation catalyst and exhaust system provided with the same |
US20100152032A1 (en) | 2008-12-16 | 2010-06-17 | Basf Catalysts Llc | Aircraft Air Treatment Catalysts, Systems and Methods |
US20100168449A1 (en) | 2008-12-29 | 2010-07-01 | Grey Roger A | Spray dried zeolite catalyst |
US8211392B2 (en) | 2009-01-16 | 2012-07-03 | Basf Corporation | Diesel oxidation catalyst composite with layer structure for carbon monoxide and hydrocarbon conversion |
JP5483539B2 (en) | 2009-02-04 | 2014-05-07 | 日本碍子株式会社 | Joining method |
US8148295B2 (en) | 2009-02-16 | 2012-04-03 | Millennium Inorganic Chemicals, Inc. | Catalyst promoters in vanadium-free mobile catalyst |
US8409518B2 (en) | 2009-03-16 | 2013-04-02 | GM Global Technology Operations LLC | Sulfur tolerant perovskite supported catalysts |
US8513155B2 (en) | 2009-03-16 | 2013-08-20 | GM Global Technology Operations LLC | Perovskite-type compounds for use in lean NOx traps |
US10792647B2 (en) | 2009-04-21 | 2020-10-06 | Johnson Matthey Public Limited Company | Base metal catalysts for the oxidation of carbon monoxide and volatile organic compounds |
JP5651685B2 (en) | 2009-05-04 | 2015-01-14 | ビーエーエスエフ コーポレーション | Improved lean HC conversion of TWC for lean burn gasoline engine |
US8246923B2 (en) | 2009-05-18 | 2012-08-21 | Umicore Ag & Co. Kg | High Pd content diesel oxidation catalysts with improved hydrothermal durability |
US8323601B2 (en) | 2009-05-20 | 2012-12-04 | Catalytic Solutions, Inc. | Catalysts for lean burn engines |
US8522536B2 (en) | 2009-05-21 | 2013-09-03 | Southwest Research Institute | Exhaust aftertreatment systems for gasoline and alternative-fueled engines, with reduction of HC, CO, NOx, and PM |
JP5436060B2 (en) | 2009-06-10 | 2014-03-05 | 本田技研工業株式会社 | Oxidation catalyst equipment for exhaust gas purification |
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US8323599B2 (en) | 2010-11-22 | 2012-12-04 | Umicore Ag & Co. Kg | Three-way catalyst having an upstream multi-layer catalyst |
CN102172527B (en) | 2011-01-28 | 2013-04-10 | 华南理工大学 | Method for preparing volatile organic compound oxidation catalyst by ultrasound-hydrogen reduction |
CA2837584A1 (en) | 2011-06-03 | 2012-12-06 | Northwestern University | Metal catalyst composition |
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WO2013022958A1 (en) | 2011-08-10 | 2013-02-14 | Clean Diesel Technologies, Inc. | Palladium solid solution castalyst and methods of making |
US9011784B2 (en) | 2011-08-10 | 2015-04-21 | Clean Diesel Technologies, Inc. | Catalyst with lanthanide-doped zirconia and methods of making |
CA2845129A1 (en) | 2011-08-19 | 2013-02-28 | SDCmaterials, Inc. | Coated substrates for use in catalysis and catalytic converters and methods of coating substrates with washcoat compositions |
KR20140077937A (en) | 2011-09-23 | 2014-06-24 | 슈빈 인코포레이티드 | Mixed phase oxide catalysts |
US20140286855A1 (en) | 2011-11-07 | 2014-09-25 | Solvay Sa | Catalyst for direct synthesis of hydrogen peroxide comprising zirconium oxide |
TWI440605B (en) | 2011-11-23 | 2014-06-11 | Nat Univ Tsing Hua | Oxygen carrier for chemical looping combustion process |
FI123812B (en) | 2012-02-17 | 2013-11-15 | Ecocat Oy | Coating to reduce nitrogen oxides |
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US8668890B2 (en) | 2012-04-26 | 2014-03-11 | Basf Corporation | Base metal catalyst composition and methods of treating exhaust from a motorcycle |
US9511355B2 (en) | 2013-11-26 | 2016-12-06 | Clean Diesel Technologies, Inc. (Cdti) | System and methods for using synergized PGM as a three-way catalyst |
US20140271391A1 (en) | 2013-03-15 | 2014-09-18 | Cdti | ZPGM TWC Systems Compositions and Methods Thereof |
US9216382B2 (en) | 2013-03-15 | 2015-12-22 | Clean Diesel Technologies, Inc. | Methods for variation of support oxide materials for ZPGM oxidation catalysts and systems using same |
US9216408B2 (en) * | 2013-04-04 | 2015-12-22 | Clean Diesel Technologies, Inc. | System and method for two and three way mixed metal oxide ZPGM catalyst |
US20140271390A1 (en) * | 2013-03-15 | 2014-09-18 | Cdti | ZPGM Catalyst Systems and Methods of Making Same |
US9227177B2 (en) | 2013-03-15 | 2016-01-05 | Clean Diesel Technologies, Inc. | Coating process of Zero-PGM catalysts and methods thereof |
US20140271387A1 (en) | 2013-03-15 | 2014-09-18 | Cdti | Optimal Composition of Copper-Manganese Spinel in ZPGM Catalyst for TWC Applications |
US20140271384A1 (en) | 2013-03-15 | 2014-09-18 | Cdti | System and Methods for using Copper- Manganese- Iron Spinel as Zero PGM Catalyst for TWC Applications |
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US8858903B2 (en) | 2013-03-15 | 2014-10-14 | Clean Diesel Technology Inc | Methods for oxidation and two-way and three-way ZPGM catalyst systems and apparatus comprising same |
US9259716B2 (en) | 2013-03-15 | 2016-02-16 | Clean Diesel Technologies, Inc. | Oxidation catalyst systems compositions and methods thereof |
US9216383B2 (en) | 2013-03-15 | 2015-12-22 | Clean Diesel Technologies, Inc. | System and method for two and three way ZPGM catalyst |
US20140274674A1 (en) | 2013-03-15 | 2014-09-18 | Cdti | Influence of Support Oxide Materials on Coating Processes of ZPGM Catalyst Materials for TWC Applications |
US20140274677A1 (en) | 2013-03-15 | 2014-09-18 | Cdti | System and Method for Optimized Oxygen Storage Capacity and Stability of OSM Without Rare Metals |
US9511350B2 (en) | 2013-05-10 | 2016-12-06 | Clean Diesel Technologies, Inc. (Cdti) | ZPGM Diesel Oxidation Catalysts and methods of making and using same |
US9517449B2 (en) | 2013-06-26 | 2016-12-13 | Clean Diesel Technologies, Inc. | Optimization of washcoat adhesion of zero-PGM catalyst on metallic substrates |
US20140274662A1 (en) | 2013-03-15 | 2014-09-18 | Cdti | Systems and Methods for Variations of ZPGM Oxidation Catalysts Compositions |
US9610570B2 (en) | 2013-03-22 | 2017-04-04 | Clean Diesel Technologies, Inc. | Methods and processes of coating zero-PGM catalysts including with Cu, Mn, Fe for TWC applications |
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US20150182954A1 (en) | 2013-06-06 | 2015-07-02 | Clean Diesel Technologies, Inc. | Phase Stability of Lanthanum-Manganese Perovskite in the Mixture of Metal Oxides |
US9216410B2 (en) | 2013-06-06 | 2015-12-22 | Clean Diesel Technologies, Inc. | Systems and methods for using Pd1+ in a TWC |
US20160023188A1 (en) | 2013-06-06 | 2016-01-28 | Clean Diesel Technologies, Inc. | Pseudo-brookite Compositions as Active Zero-PGM Catalysts for Diesel Oxidation Applications |
US20150004709A1 (en) | 2013-06-26 | 2015-01-01 | Cdti | Methods for Identification of Materials Causing Corrosion on Metallic Substrates within ZPGM Catalyst Systems |
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US8969228B2 (en) | 2013-07-12 | 2015-03-03 | Clean Diesel Technologies, Inc. | Process for elimination of hexavalent chromium compounds on metallic substrates within zero-PGM catalyst systems |
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US9545626B2 (en) | 2013-07-12 | 2017-01-17 | Clean Diesel Technologies, Inc. | Optimization of Zero-PGM washcoat and overcoat loadings on metallic substrate |
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US20150258496A1 (en) | 2013-11-26 | 2015-09-17 | Clean Diesel Technologies, Inc. | Hybrid PGM-ZPGM TWC Exhaust Treatment Systems |
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US9468912B2 (en) | 2014-11-17 | 2016-10-18 | Clean Diesel Technologies, Inc. | Zero PGM catalyst including Cu—Co—Mn ternary spinel for TWC applications |
US20160136619A1 (en) | 2014-11-17 | 2016-05-19 | Clean Diesel Technologies, Inc. | Cobalt Containing Bimetallic Zero PGM Catalyst for TWC Applications |
US20160136617A1 (en) | 2014-11-17 | 2016-05-19 | Clean Diesel Technologies, Inc. | Synergized PGM Catalyst with Low PGM Loading and High Sulfur Resistance for Diesel Oxidation Application |
US9427730B2 (en) | 2014-11-17 | 2016-08-30 | Clean Diesel Technologies, Inc. | Bimetallic synergized PGM catalyst systems for TWC application |
US20160136618A1 (en) | 2014-11-19 | 2016-05-19 | Clean Diesel Technologies, Inc. | Sulfur-Resistant Synergized PGM Catalysts for Diesel Oxidation Application |
-
2013
- 2013-06-06 US US13/911,986 patent/US20140274662A1/en not_active Abandoned
- 2013-06-06 US US13/912,011 patent/US9511353B2/en active Active
-
2014
- 2014-03-17 WO PCT/US2014/030597 patent/WO2014145775A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090324468A1 (en) * | 2008-06-27 | 2009-12-31 | Golden Stephen J | Zero platinum group metal catalysts |
WO2012093600A1 (en) * | 2011-01-05 | 2012-07-12 | 本田技研工業株式会社 | Exhaust gas purification catalyst and exhaust gas purification catalyst structure |
Non-Patent Citations (2)
Title |
---|
Ishizaki, Keita, et al. (A Study of PGM-Free Oxidation Catalyst YMnO 3 for Diesel Exhaust Aftertreatment.) No. 2012-01-0365. SAE Technical Paper, 2012. http://papers.sae.org/2012-01-0365/. * |
Kucharczyk et al(Partial substitution of lanthanum with silver in the LaMnO3 perovskite: Effect of the modification on the activity of monolithic catalysts in the reactions of methane and carbon oxide oxidation, Applied Catalysis A: General, Vol 335, Issue 1, (2008) Pages 28-36). * |
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US20140274663A1 (en) | 2014-09-18 |
WO2014145775A1 (en) | 2014-09-18 |
US9511353B2 (en) | 2016-12-06 |
WO2014145775A8 (en) | 2016-03-17 |
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