CN101670287B - Diesel engine tail gas post-processing catalyst and using method thereof - Google Patents
Diesel engine tail gas post-processing catalyst and using method thereof Download PDFInfo
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- CN101670287B CN101670287B CN2009101851344A CN200910185134A CN101670287B CN 101670287 B CN101670287 B CN 101670287B CN 2009101851344 A CN2009101851344 A CN 2009101851344A CN 200910185134 A CN200910185134 A CN 200910185134A CN 101670287 B CN101670287 B CN 101670287B
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- coating
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- metal
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- 239000003054 catalyst Substances 0.000 title claims abstract description 32
- 238000012805 post-processing Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 31
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 11
- 230000003197 catalytic effect Effects 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 18
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 15
- 150000001342 alkaline earth metals Chemical group 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 13
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 241001466460 Alveolata Species 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 238000012536 packaging technology Methods 0.000 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 239000010948 rhodium Substances 0.000 claims description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- 230000001413 cellular effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000009938 salting Methods 0.000 claims description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 12
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 7
- 229930195733 hydrocarbon Natural products 0.000 abstract description 7
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract 2
- 238000002791 soaking Methods 0.000 abstract 2
- 239000004480 active ingredient Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- -1 platinum group metals Chemical class 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 15
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229910000510 noble metal Inorganic materials 0.000 description 6
- 230000006378 damage Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000121268 Erythroparvovirus Species 0.000 description 1
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Catalysts (AREA)
Abstract
The invention provides a diesel engine tail gas post-processing catalyst and a using method thereof, the catalyst comprises a zirconia coating adhered on a metal or ceramic carrier in a favelolate structure, an alkali metal oxide coating adhered on the zirconia coating and a platinum group metals oxide coating dispersed in the alkali metal oxide coating. The using method comprises the following steps: successively soaking raw material components adhered with the catalyst on the carrier, drying and baking to form a coating, absorbing other active ingredients of the catalyst by a soaking method, drying and baking to form a catalyst core, and preparing into a diesel engine oxidized catalytic converter after shaping by an encapsulating technique. The invention has high conversion efficiency for carbon monoxide and hydrocarbon, inhibits oxidized effect on sulfur dioxide, reduces the emission amount of carbon monoxide and hydrocarbon and lowers environmental pollution resulted from oxidation of sulfur dioxide. The using method is simple and convenient in operation.
Description
Technical field
The present invention relates to a kind of Catalysts and its preparation method, specifically a kind of diesel engine tail gas post-processing catalyst and preparation method thereof.
Background technology
Diesel engine has high thermal efficiency, the characteristics such as high-power, and good economy and reliability are arranged, and is used widely at automobile, agricultural mechanical field.But when diesel engine developed rapidly, the tail gas that diesel engine discharges is serious environment pollution but, the serious harm health.Mainly contain lead, carbon, carbon monoxide, nitrogen oxide, sulfur dioxide and not clean-burning hydrocarbon in the tail gas: the hemoglobin in carbon monoxide and the human erythrovirus has very strong affinity, its affinity is stronger tens times than oxygen, generate carbonyl haemoglobin (COHb%) behind the affinity, thereby slacken blood to the function of respectively organizing delivery of oxygen, cause the dysfunctions such as sensory reaction, understanding, memory, severe one harm blood circulation system causes life danger; Not clean-burning hydrocarbon produces photochemical fog, the serious harm health be subjected to strong solar ultraviolet irradiation in atmospheric environment after; Nitrogen oxide has the stimulation destruction to the human respiratory tract system on the one hand, forms acid rain simultaneously in atmosphere, and participates in the chemical reaction of formation photochemical fog.Therefore, the purified treatment of diesel engine vent gas had great significance.
Summary of the invention
The invention provides a kind of diesel engine tail gas post-processing catalyst and preparation method thereof, described catalyst is to the high oxidation that also can stop sulfur dioxide of conversion efficiency of carbon monoxide and hydrocarbon.
Technical scheme of the present invention is:
A kind of diesel engine tail gas post-processing catalyst is characterized in that: comprise the oxide coating that is attached to the zirconia coating on cellular metal or the ceramic monolith and is attached to the alkaline-earth metal on the zirconia coating, the oxide that is scattered in the platinum group metal in the coating.
Described diesel engine tail gas post-processing catalyst is characterized in that: described alkaline-earth metal is selected a kind of in beryllium, magnesium, calcium, strontium, the barium or any two; The a kind of of platinum, palladium, rhodium, iridium or any two are selected in described platinum group metal.
Diesel engine tail gas post-processing catalyst is characterized in that: the mol ratio of described zirconia, alkaline-earth metal and platinum group metal is 5-10: 1: 0.1-1.
The preparation method of described diesel engine tail gas post-processing catalyst, it is characterized in that: after carrier being soaked in the solution of zirconates, form zirconia coating after drying and the roasting, then after the carrier after the roasting being soaked in the salting liquid of alkaline-earth metal, form the oxide coating of alkaline-earth metal after drying and the roasting; Adopt the quantitative saturation adsorption method that the salpeter solution of platinum group metal is adsorbed in the two layers of coatings that is dispersed on the carrier, after drying and the roasting, get the catalyst core body; The catalyst core body is made oxidative diesel type catalytic cleaner after the packaging technology moulding; Described sintering temperature is between 400～700 ℃, and roasting time is between 1～3 hour.
The preparation method of described diesel engine tail gas post-processing catalyst: it is characterized in that: described carrier refers to have metal or the pottery of alveolate texture.
The preparation method of described diesel engine tail gas post-processing catalyst: it is characterized in that: described sintering temperature is at 500～600 ℃.
Quantitative saturation adsorption method process is as follows: carry out coating of metal oxides carrier have certain water absorption rate, such as 13% of oxide coating gross weight.Determine the total amount of precious metal solution by this water absorption rate.Then by required carried noble metal amount, calculate the noble metal that will add.Then the carrier with coating is immersed in the solution of noble metal.Because the total amount of solution just is the water absorption rate of figure layer, so complete soln (noble metal) all is inhaled in the figure layer.Noble metal with Solution Dispersion to coating.Usually, along profile depth noble metal distribution gradient, the top layer is many, and bottom is few, and this characteristic just is the advantage place of heterogeneous body catalyst.
Catalyst of the present invention also can stop oxidation catalyst to the oxidation of sulfur dioxide to the conversion efficiency height of carbon monoxide and hydrocarbon, reduced the discharge capacity of carbon monoxide and hydrocarbon, reduced the environmental pollution that the oxidation of sulfur dioxide brings, and the preparation method is simple, and is easy to operate.
The specific embodiment
A kind of diesel engine tail gas post-processing catalyst comprises the oxide coating that is attached to the zirconia coating on alveolate texture metal or the pottery and is attached to the alkaline-earth metal on the zirconia coating, the oxide that is scattered in the platinum group metal in the coating.
Described diesel engine tail gas post-processing catalyst, wherein, alkaline-earth metal selects a kind of in beryllium, magnesium, calcium, strontium, the barium or any two, platinum group metal to select a kind of of platinum, palladium, rhodium, iridium or any two.
The mol ratio of zirconia, alkaline-earth metal and platinum group metal is 5-10: 1: 0.1-1.
The preparation method of diesel engine tail gas post-processing catalyst:
After carrier being soaked in the nitrate solution or acetate solution of zirconium, form zirconia coating after drying and the roasting, then after the carrier after the roasting being soaked in the nitrate solution or acetate solution of alkaline-earth metal, form the oxide coating of alkaline-earth metal after drying and the roasting, adopt the quantitative saturation adsorption method that the salpeter solution of platinum group metal is adsorbed in the two layers of coatings that is dispersed on the carrier, after drying and the roasting, get the catalyst core body; The catalyst core body is made oxidative diesel type catalytic cleaner after the packaging technology moulding.Sintering temperature is between 400～700 ℃, and roasting time is between 1～3 hour.
Claims (3)
1. the preparation method of a diesel engine tail gas post-processing catalyst is characterized in that: comprise the oxide coating that is attached to the zirconia coating on cellular metal or the ceramic monolith and is attached to the alkaline-earth metal on the zirconia coating, the oxide that is scattered in the platinum group metal in the coating;
Described alkaline-earth metal is selected a kind of in beryllium, magnesium, calcium, strontium, the barium or any two; The a kind of of platinum, palladium, rhodium, iridium or any two are selected in described platinum group metal;
The mol ratio of described zirconia, alkaline-earth metal and platinum group metal is 5-10: 1: 0.1-1;
The preparation method:
After carrier being soaked in the solution of zirconates, form zirconia coating after drying and the roasting, then the carrier after the roasting is soaked in the salting liquid of alkaline-earth metal after, form the oxide coating of alkaline-earth metal after drying and the roasting; Adopt the quantitative saturation adsorption method that the salpeter solution of platinum group metal is adsorbed in the two layers of coatings that is dispersed on the carrier, after drying and the roasting, get the catalyst core body; The catalyst core body is made oxidative diesel type catalytic cleaner after the packaging technology moulding; Described sintering temperature is between 400～700 ℃, and roasting time is between 1～3 hour.
2. the preparation method of diesel engine tail gas post-processing catalyst according to claim 1, it is characterized in that: described carrier refers to have metal or the pottery of alveolate texture.
3. the preparation method of diesel engine tail gas post-processing catalyst according to claim 1: it is characterized in that: described sintering temperature is at 500～600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101851344A CN101670287B (en) | 2009-09-30 | 2009-09-30 | Diesel engine tail gas post-processing catalyst and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101851344A CN101670287B (en) | 2009-09-30 | 2009-09-30 | Diesel engine tail gas post-processing catalyst and using method thereof |
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| Publication Number | Publication Date |
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| CN101670287A CN101670287A (en) | 2010-03-17 |
| CN101670287B true CN101670287B (en) | 2013-05-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6105365A (en) * | 1997-04-08 | 2000-08-22 | Engelhard Corporation | Apparatus, method, and system for concentrating adsorbable pollutants and abatement thereof |
| CN101172229A (en) * | 2006-11-01 | 2008-05-07 | 比亚迪股份有限公司 | NO*storage-reduction catalyzer for vehicle vent gas process and preparation method thereof |
| CN101249437A (en) * | 2008-03-21 | 2008-08-27 | 无锡威孚环保催化剂有限公司 | Ternary catalyst of magnalium composite oxides adulterating metallic and manufacture method thereof |
-
2009
- 2009-09-30 CN CN2009101851344A patent/CN101670287B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6105365A (en) * | 1997-04-08 | 2000-08-22 | Engelhard Corporation | Apparatus, method, and system for concentrating adsorbable pollutants and abatement thereof |
| CN101172229A (en) * | 2006-11-01 | 2008-05-07 | 比亚迪股份有限公司 | NO*storage-reduction catalyzer for vehicle vent gas process and preparation method thereof |
| CN101249437A (en) * | 2008-03-21 | 2008-08-27 | 无锡威孚环保催化剂有限公司 | Ternary catalyst of magnalium composite oxides adulterating metallic and manufacture method thereof |
Non-Patent Citations (3)
| Title |
|---|
| M. Piacentini. et al.Supported Pt-Ba storage-reduction catalysts: Influence of support and Ba loading on stability and storage efficiency of Ba-containing species.《Applied Catalysis B: Environmental》.2006,第66卷(第1-2期),第126-136页. * |
| Naoki Takahashi. et al.Sulfur durability of NOx storage and reduction catalyst with supports of TiO2, ZrO2 and ZrO2-TiO2 mixed oxides.《Applied Catalysis B: Environmental》.2007,第72卷(第1-2期),第187-195页. * |
| NaokiTakahashi.etal.SulfurdurabilityofNOxstorageandreductioncatalystwithsupportsofTiO2 ZrO2 and ZrO2-TiO2 mixed oxides.《Applied Catalysis B: Environmental》.2007 |
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| CN101670287A (en) | 2010-03-17 |
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Denomination of invention: Diesel engine tail gas post-processing catalyst and using method thereof Effective date of registration: 20170505 Granted publication date: 20130501 Pledgee: China Co truction Bank Corp Chizhou branch Pledgor: ACTBLUE CO., LTD. Registration number: 2017340000057 |
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Date of cancellation: 20200916 Granted publication date: 20130501 Pledgee: China Co. truction Bank Corp Chizhou branch Pledgor: ANHUI ACT-BLUE ENVIRONMENTAL PROTECTION Co.,Ltd. Registration number: 2017340000057 |