CN104707593B - The method that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid - Google Patents
The method that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid Download PDFInfo
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Abstract
The invention provides a kind of method that extruded type Faveolate denitration catalyst is prepared by raw material of metatitanic acid, the TiO obtained after the block metatitanic acid roasting of industrial stoving2As raw material, it is not required to TiO2Carry out the further post processings such as any surface modification, broken classification.By TiO2Mediated with vanadium tungsten mixed solution and obtain catalyst pug.The plasticity of pug can be increased by being added in kneading process into catalyst pug after a certain amount of gangue, improve the intensity for burning till catalyst, and further reduce the cost of catalyst.The overall denitrating catalyst prepared has good denitration activity, resistance to SO_2 and stability, is very suitable for firepower electrical plant flue gas denitration.
Description
Technical field
The invention belongs to catalyst field, and in particular to a kind of catalyst of removing nitrogen oxides in effluent and its preparation side
Method.
Background technology
During thermal power generation, combustion of fossil fuel discharges substantial amounts of NOx, cause serious environmental pollution.Various de-
In nitrogen oxides method, SCR（selective catalytic reduction,SCR）Technology is that removing is each
Plant NO in discharge waste gasxA kind of mostly important and most industrial application value method.The method is under catalyst action, with NH3
It is reducing agent by NOxIt is reduced to N2It is discharged into again among air.
Now widely used catalyst is V2O5-WO3/TiO2And V2O5-MoO3/TiO2System, mainly there is cellular and plate
Two kinds of configurations of formula.The 80% of denitrating catalyst is made up of titanium oxide, its preparation process be using nanometer titanium dioxide as skeleton raw material,
WO is supported thereon3And V2O5, it is molded by way of extruding or suppressing.The more conventional titanium dioxide preparation section of nanometer titanium dioxide is complicated,
It, which is prepared, includes a variety of postprocessing working procedures, and such as surface is modified, and fine is crushed etc., considerably increases production cost.
Chinese patent application（CN03122008.8）A kind of preparation method of denitrating catalyst is disclosed, its carrier titanium dioxide
The preparation flow of titanium is as follows：With at 95 DEG C of ammoniacal liquor, by metatitanic acid maturation process, then slurry being cooled down to → filtering → and washs → dries
Titania powder product is obtained after dry → roasting → crushing.The extraordinary anatase titanium dioxide of crystallinity can be obtained by such a modification
Titanium dioxide, but treatment process is more complicated, it is necessary to which using substantial amounts of ammoniacal liquor, the manufacturing cost of product is higher, also produces substantial amounts of
Waste water needs processing.
Chinese patent application（CN101318697A）A kind of preparation method of denitrating catalyst titanium dioxide is disclosed, it is made
Standby process is contained carries out surface modification treatment with organic surface active agent to metatitanic acid, adds processing step and is produced into
This.
The TiO that the present invention is only obtained after the block metatitanic acid roasting of industrial stoving2As raw material, it is not required to any surface and changes
Property, the further postprocessing working procedures such as broken classification, mediated with vanadium tungsten mixed solution and obtain catalyst pug.Use laser particle analyzer
Determine the TiO2Volume average particle size is 5.4 microns, is much higher than and prepares used nano grade titanium during denitrating catalyst at present
White powder（Particle mean size<1 micron）.Pug can be increased by being added in preparation process into catalyst pug after a certain amount of gangue
Plasticity, improve and burn till the intensity of catalyst, and further reduce the cost of catalyst.The overall denitrating catalyst prepared
With good denitration activity, resistance to SO_2 and stability are very suitable for firepower electrical plant flue gas denitration.
The content of the invention
The purpose of the present invention is to prepare integral extruding type by raw material of metatitanic acid there is provided one kind in view of the shortcomings of the prior art
The method of Faveolate denitration catalyst.This method cost is low, simple and easy to apply, and the integral extruding type denitrating catalyst prepared has
Good mechanical strength and denitration activity, it is adaptable to which firepower electrical plant flue gas nitrogen oxides is administered.
The present invention specifically provides a kind of side that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid
Method, it is characterised in that this method step is as follows：
（1）Titanium dioxide is obtained after directly metatitanic acid is calcined；
（2）Salt containing vanadium and the salt containing tungsten are dissolved in deionized water, and add cosolvent, obtain containing vanadium and
The mixed solution of tungsten；
（3）By be calcined metatitanic acid obtain titanium dioxide, dissolving after vanadium tungsten mixed solution, hydroxypropyl methyl cellulose and
Add and mediated in kneader after gangue mixing, tung oil and glycerine are also added in kneading process；
（4）By old 24~48 hours of kneaded catalyst pug；
（5）Catalyst pug after old obtains honeycomb molded body after vacuum pugging by extruder shaping；
（6）Honeycomb molded body after shaping obtains denitrating catalyst after drying, roasting.
The method of the present invention that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid, its feature exists
In：Step（1）In, the average grain diameter of the metatitanic acid is at 3~7 μm, and sintering temperature is at 450~650 DEG C.
The method of the present invention that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid, its feature exists
In：Step（2）In, the salt containing vanadium is preferably ammonium metavanadate, and the salt containing tungsten is preferably ammonium paratungstate, and cosolvent is preferred
For MEA and ammoniacal liquor.The mass ratio of salt containing vanadium and the salt containing tungsten is 1：12~1：3.MEA in mixed solution
Concentration be 25~60g/L, the concentration of ammonia is 5~35g/L.
The method of the present invention that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid, its feature exists
In：Step（3）In, the average grain diameter of gangue is at 5~20 μm, and addition is TiO2The 5~30% of dry powder weight；Hydroxypropyl first
The addition of base cellulose is TiO2The 3~8% of dry powder weight；The addition of tung oil is TiO2The 3~8% of dry powder weight；Glycerine
Addition is TiO2The 2~4% of dry powder weight.
The method of the present invention that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid, specific steps
It is as follows：
1）, metatitanic acid roasting
Metatitanic acid is placed in Muffle furnace, titanium dioxide is obtained in roasting at 450~650 DEG C.
2）, with liquid and dispensing
Titanium dioxide, ammonium metavanadate and ammonium paratungstate are weighed by composition.By ammonium metavanadate, ammonium paratungstate, monoethanol
Wiring solution-forming after amine and ammonia spirit mixing.
3）, mediate
The solution prepared and titanium dioxide are added and mediated in kneader.Bastard coal is also added in kneading process
The materials such as stone, methylcellulose, tung oil, glycerine（It is preferred that glass fibre）Controlled with the viscosity for realizing mixture, increase catalyst
The plasticity of pug.Wherein the addition of gangue is TiO2The 5~30% of dry powder weight.The addition of hydroxypropyl methyl cellulose
Measure as TiO2The 3~8% of dry powder weight.The addition of tung oil is TiO2The 3~8% of dry powder weight, the addition of glycerine is TiO2It is dry
The 2~4% of powder weight.Kneading time, at 3~6 hours, finally obtains the catalyst pug that water content is 15~22%.It will mediate
Good catalyst pug is carried out old with plastic sheeting good seal, it is ensured that the moisture in pug will not be evaporated, and the old time is
24~48 hours；
4）, pugging
Will be kneaded and added through old after a while catalyst pug in vacuum deairing machine, open pug mill and true
Empty pump carries out vacuum pugging, and vacuum maintains -0.08~-0.095Mpa.Catalyst pug is through 5~10 vacuum puggings repeatedly
Formation surface is smooth afterwards, stickiness is preferable, a diameter of 50mm catalyst mud section.Old 24 will be continued after catalyst mud section good seal
~48 hours；
5）, extrusion
The method for forming honeycomb molded body is that the material cylinder that the old good catalyst mud section of one section of interception is put into extruder leads to
Cross porous mold extrusion.Plunger-type extruder, continuously spiral extruder, double screw extruder or other known crowded can be used
Go out equipment.The honeycomb structured body extruded in the present invention has the hole wall of ranks arranged regular, matrix material, catalyst activity material
It is evenly distributed in permanent adhesive in hole wall.The hole wall of arranged regular constitutes the duct of insertion catalyst honeycomb；
6）, dry
The honeycomb ceramics of extrusion is placed 24~72 hours in atmosphere, is then dried 5~10 hours at 120 DEG C in drying box
Its moisture evaporation is shaped after falling and obtain extruded type honeycombed catalyst dry base substrate；
7）, roasting
Dried catalyst base substrate, which is placed in Muffle furnace, to be calcined.Heating temperature range between 500~700 DEG C,
And kept for the sufficiently long residence time to ensure to burn till catalyst structure completely.Residence time in roasting process can be 2
~4 hours.
Beneficial effects of the present invention are：The raw material of selection is metatitanic acid, and raw material sources are convenient, cheap, and need not enter
Row pretreatment, preparation technology is simple；Catalyst can be significantly improved using the low gangue of wide material sources, cost as additive
Mechanical strength.
Brief description of the drawings
Conversion rate of NOx is with inlet gas when Fig. 1 presses different air speeds on extruded type honeycomb denitrating catalyst prepared by embodiment 1
Temperature variation curve.
Conversion rate of NOx is with inlet gas when Fig. 2 presses different air speeds on extruded type honeycomb denitrating catalyst prepared by embodiment 2
Temperature variation curve.
Fig. 3 adds SO2Afterwards, conversion rate of NOx is with the reaction time on the extruded type honeycomb denitrating catalyst prepared by embodiment 2
Change curve.
Conversion rate of NOx changes bent with gasinlet temperature on the extruded type honeycomb denitrating catalyst that Fig. 4 is prepared by embodiment 4
Line.
Conversion rate of NOx changes bent with gasinlet temperature on the extruded type honeycomb denitrating catalyst that Fig. 5 is prepared by embodiment 5
Line.
Embodiment
The invention provides a kind of denitrating catalyst and preparation method thereof, the present invention is entered below by embodiment
One step explanation.
Embodiment 1
Domestic metatitanic acid is calcined 2 hours at 600 DEG C and obtains titanium dioxide, its average grain is determined with laser particle analyzer big
Small is 5.4 μm.Its average grain diameter is surveyed after gangue is levigate for 12 μm.By 17.14g ammonium metavanadates, 108.6g ammonium paratungstates,
Deionized water heating for dissolving, which is added, after 34.28g MEAs, the mixing of 165mL15% ammoniacal liquor obtains about 800mL mixed solutions.Take
The above-mentioned titanium dioxide of 980g, 133g gangues, 53.3g hydroxypropyl methyl celluloses are added in kneading machine dry-mixed 30 minutes.Then
The vanadium tungsten mixed solution prepared is poured into kneader and starts to mediate.Also 53.3g tung oil is added in kneading process and 25g is sweet
Oil.Kneading treats that material is uniform for 4 hours, and catalyst pug is obtained after water content is suitable.After old 24 hours of this catalyst pug
Start vacuum pugging.Pug after perfecting is pressed through porous mold with hydraulic piston type extruder after placing 24 hours and saved
Away from for 4.4mm, wall thickness is 0.9mm honeycomb structured body.
The honeycomb ceramics of extrusion places 48 hours after being dried 5 hours in drying box 120 DEG C in atmosphere, then in Muffle
Roasting obtains denitration honeycomb catalyst in 2 hours at 500 DEG C in stove.
Obtained catalyst denitration activity method of testing is：The integral honeycombed catalyst of extrusion is cut into 3.6cm's
Segment, is put in fixed bed reactors, reaction atmosphere simulated flue gas composition, wherein NO：550ppm, NH3：550ppm, O2：5%,
CO2：10%（Percent by volume, similarly hereinafter）, H2O is added in evaporator by pump and mixed after evaporation with unstripped gas, and control pump discharge makes water
Vapour concentration is 10%.Regulation raw gas flow causes the air speed respectively 5000hr of reaction-1And 10000hr-1.Detect respectively
The NO concentration of import and export, so as to calculate NO conversion ratio, obtains the denitration efficiency of catalyst.Accompanying drawing 1 gives the catalyst
Denitration efficiency in the different air speeds of 200~500 DEG C of temperature ranges, it can be seen that in 5000hr-1When 250~450 DEG C of humidity provinces
Between, NO conversion ratio is maintained at more than 99% on the catalyst, in 10000hr-1When, 350~450 DEG C of coal-burning power plant's economizers go out
Mouth effluent gas temperature is interval, and the catalyst denitration efficiency is still up to 99%, with extraordinary denitration activity.
Embodiment 2
Domestic metatitanic acid is calcined 2 hours at 600 DEG C and obtains titanium dioxide, its average grain is determined with laser particle analyzer big
Small is 5.4 μm.Its average grain diameter is surveyed after gangue is levigate for 12 μm.By 11.48g ammonium metavanadates, 108.6g ammonium paratungstates,
Deionized water heating for dissolving, which is added, after 22.96g MEAs, the mixing of 100mL15% ammoniacal liquor obtains about 800mL mixed solutions.Take
The above-mentioned titanium dioxide of 980g, 133g gangues, 53.3g hydroxypropyl methyl celluloses are added in kneading machine dry-mixed 30 minutes.Then
The vanadium tungsten mixed solution prepared is poured into kneader and starts to mediate.Also 53.3g tung oil is added in kneading process and 25g is sweet
Oil.Kneading treats that material is uniform for a period of time, and catalyst pug is obtained after water content is suitable.By old 48 hours of this catalyst pug
After start vacuum pugging.Pug after perfecting is pressed through porous mold with hydraulic piston type extruder after placing 24 hours and obtained
Pitch is 4.4mm, and wall thickness is 0.9mm honeycomb structured body.
The honeycomb ceramics of extrusion places 48 hours after being dried 5 hours in drying box 120 DEG C in atmosphere, then in Muffle
Roasting obtains denitration honeycomb catalyst in 2 hours at 500 DEG C in stove.
Obtained catalyst denitration activity method of testing be the same as Example 1, accompanying drawing 2 gives the catalyst at 200~500 DEG C
Denitration efficiency during temperature range difference air speed, it can be seen that in 5000hr-1When 250~450 DEG C of temperature ranges, on the catalyst
NO conversion ratio is maintained at more than 99%, in 10000hr-1When, 350~450 DEG C of coal-burning power plant's economizer exit effluent gas temperatures
Interval, the catalyst denitration efficiency is still up to 99%, with extraordinary denitration activity.
The catalyst Sulfur tolerance of embodiment 3 is tested
Catalyst preparation be the same as Example 2.Catalyst is cut into 3.6cm segment, is put in fixed bed reactors and carries out
The Sulfur tolerance test of catalyst.1350ppmSO is added in the reaction atmosphere of embodiment 22, in reaction 1200 hours at 360 DEG C.It is attached
Fig. 3 gives the denitration conversion ratio of catalyst in 1200 hours, it can be seen that reached on catalyst in conversion rate of NOx after 200 hours
To stable, more than 98% is always held at.
Embodiment 4
Domestic metatitanic acid is calcined 2 hours at 450 DEG C and obtains titanium dioxide, its average grain is determined with laser particle analyzer big
Small is 5.4 μm.Its average grain diameter is surveyed after gangue is levigate for 12 μm.By 11.48g ammonium metavanadates, 108.6g ammonium paratungstates,
Deionized water heating for dissolving, which is added, after 47.96g MEAs, the mixing of 50mL15% ammoniacal liquor obtains about 800mL mixed solutions.Take
The above-mentioned titanium dioxide of 980g, 133g gangues, 78g hydroxypropyl methyl celluloses are added in kneading machine dry-mixed 30 minutes.Then will
The vanadium tungsten mixed solution prepared, which is poured into kneader, to be started to mediate.53.3g tung oil and 25g glycerine are also added in kneading process.
Kneading treats that material is uniform for a period of time, and catalyst pug is obtained after water content is suitable.After old 35 hours of this catalyst pug
Start vacuum pugging.Pug after perfecting is pressed through porous mold with hydraulic piston type extruder after placing 24 hours and saved
Away from for 7mm, wall thickness is 0.8mm honeycomb structured body.
The honeycomb ceramics of extrusion places 48 hours after being dried 5 hours in drying box 120 DEG C in atmosphere, then in Muffle
Roasting obtains denitration honeycomb catalyst in 2 hours at 500 DEG C in stove.
Obtained catalyst denitration activity method of testing is：The integral honeycombed catalyst of extrusion is cut into 3.6cm's
Segment, is put in fixed bed reactors, reaction atmosphere simulated flue gas composition, wherein NO：550ppm, NH3：550ppm, O2：5%,
CO2：10%, H2O is added in evaporator by pump and mixed after evaporation with unstripped gas, controls pump discharge to make water vapor concentration be 10%.Adjust
Section raw gas flow causes the air speed of reaction to be 5600hr-1.The NO concentration of import and export is detected respectively, so as to calculate NO conversion
Rate, obtains the denitration efficiency of catalyst.Accompanying drawing 4 gives denitration efficiency of the catalyst in 200~500 DEG C of temperature ranges.
Embodiment 5
Domestic metatitanic acid is calcined 2 hours at 450 DEG C and obtains titanium dioxide, its average grain is determined with laser particle analyzer big
Small is 5.4 μm.Its average grain diameter is surveyed after gangue is levigate for 12 μm.By 5.74g ammonium metavanadates, 108.6g ammonium paratungstates,
Deionized water heating for dissolving, which is added, after 34.46g MEAs, the mixing of 100mL15% ammoniacal liquor obtains about 800mL mixed solutions.Take
The above-mentioned titanium dioxide of 980g, 133g gangues, 78g hydroxypropyl methyl celluloses are added in kneading machine dry-mixed 30 minutes.Then will
The vanadium tungsten mixed solution prepared, which is poured into kneader, to be started to mediate.53.3g tung oil and 25g glycerine are also added in kneading process.
Kneading treats that material is uniform for a period of time, and catalyst pug is obtained after water content is suitable.After old 24 hours of this catalyst pug
Start vacuum pugging.Pug after perfecting is pressed through porous mold with hydraulic piston type extruder after placing 24 hours and saved
Away from for 4.4mm, wall thickness is 0.9mm honeycomb structured body.
The honeycomb ceramics of extrusion places 48 hours after being dried 5 hours in drying box 120 DEG C in atmosphere, then in Muffle
Roasting obtains denitration honeycomb catalyst in 2 hours at 500 DEG C in stove.
Obtained catalyst denitration activity method of testing be the same as Example 4.Accompanying drawing 5 gives the catalyst at 175~450 DEG C
The denitration efficiency of temperature range.
Comparative example 1
Catalyst preparation process be the same as Example 2, is simply not added with MEA, other conditions when preparing vanadium tungsten mixed solution
It is identical.As a result find that the plasticity of pug after pugging is very poor, can not obtain complete honeycomb molded body during extrusion.
Comparative example 2
Catalyst preparation process be the same as Example 5, simply when preparing vanadium tungsten mixed solution, the addition of MEA is
60g, is not added with ammoniacal liquor, and other conditions are identical.It can extrude and obtain complete honeycomb molded body, but base substrate is sent out in the drying process
Raw cracking, is crushed completely after roasting.
Comparative example 3
Catalyst preparation process be the same as Example 2, simply the addition of tung oil is 15g, the addition of glycerine in kneading process
Measure as 10g, other conditions are identical.The honeycomb molded body surface obtained when as a result finding extrusion is very coarse, inside honeycomb ceramics
There is horizontal crackle.
The principle for illustrating the present invention and its effect is described above, not for the limitation present invention.Technology belonging to any
The technical staff in field can modify and become in the thought and scope without prejudice to the present invention to above-described embodiment
Change.Therefore, the scope of the present invention, should be defined by listed claim.
Claims (9)
1. a kind of method that integral extruding type Faveolate denitration catalyst is prepared by raw material of metatitanic acid, it is characterised in that the party
Method step is as follows：
(1) titanium dioxide is obtained after directly metatitanic acid is calcined；
(2) salt containing vanadium and the salt containing tungsten are dissolved in deionized water, and add cosolvent, obtained containing vanadium and tungsten
Mixed solution, the cosolvent is that the concentration of MEA in MEA and ammoniacal liquor, mixed solution is 25~60g/L, ammonia
Concentration is 5~35g/L；
(3) by be calcined metatitanic acid obtain titanium dioxide, dissolving after vanadium tungsten mixed solution, hydroxypropyl methyl cellulose and bastard coal
Add and mediated in kneader after stone mixing, tung oil and glycerine are also added in kneading process；
(4) by old 24~48 hours of kneaded catalyst pug；
(5) the catalyst pug after old obtains honeycomb molded body after vacuum pugging by extruder shaping；
(6) honeycomb molded body after being molded obtains denitrating catalyst after drying, roasting.
2. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 1 by raw material of metatitanic acid, its
It is characterised by：In step (1), the average grain diameter of the metatitanic acid is at 3~7 μm, and sintering temperature is at 450~650 DEG C.
3. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 1 by raw material of metatitanic acid, its
It is characterised by：In step (2), the salt containing vanadium is ammonium metavanadate, and the salt containing tungsten is ammonium paratungstate.
4. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 1 or 3 by raw material of metatitanic acid,
It is characterized in that：In step (2), the mass ratio of the salt containing vanadium and the salt containing tungsten is 1：12~1：3.
5. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 4 by raw material of metatitanic acid, its
It is characterised by：In step (3), the average grain diameter of gangue is at 5~20 μm.
6. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 1 by raw material of metatitanic acid, its
It is characterised by：In step (3), the addition of gangue is TiO2The 5~30% of dry powder weight.
7. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 1 by raw material of metatitanic acid, its
It is characterised by：In step (3), the addition of hydroxypropyl methyl cellulose is TiO2The 3~8% of dry powder weight.
8. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 1 by raw material of metatitanic acid, its
It is characterised by：In step (3), the addition of tung oil is TiO2The 3~8% of dry powder weight.
9. according to the method for preparing integral extruding type Faveolate denitration catalyst described in claim 1 by raw material of metatitanic acid, its
It is characterised by：In step (3), the addition of glycerine is TiO2The 2~4% of dry powder weight.
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| CN112316937B (en) * | 2020-11-16 | 2023-05-12 | 陆叶梓 | Cement rotary kiln waste gas treatment catalyst and preparation method thereof |
| CN112973668A (en) * | 2021-02-23 | 2021-06-18 | 华电光大(辽阳)节能环保技术有限公司 | High-strength honeycomb type low-temperature SCR denitration catalyst and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935026A (en) * | 1982-08-19 | 1984-02-25 | Mitsubishi Heavy Ind Ltd | Preparation of calcined titanium oxide and catalyst |
| EP0294204A2 (en) * | 1987-06-05 | 1988-12-07 | Babcock-Hitachi Kabushiki Kaisha | A process for producing a catalyst for denitration by catalytic reduction using ammonia |
| JP2007216137A (en) * | 2006-02-16 | 2007-08-30 | Mitsubishi Heavy Ind Ltd | Catalyst for treating exhaust gas and its manufacturing method |
| CN101318697A (en) * | 2008-07-11 | 2008-12-10 | 四川华铁钒钛科技股份有限公司 | Method for preparing titanium dioxide product for high-specific surface area denitrating catalyst |
| CN101396657A (en) * | 2008-10-23 | 2009-04-01 | 清华大学 | Denitration catalyst using titanium dioxide as raw material and preparation method thereof |
-
2013
- 2013-12-16 CN CN201310696166.7A patent/CN104707593B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935026A (en) * | 1982-08-19 | 1984-02-25 | Mitsubishi Heavy Ind Ltd | Preparation of calcined titanium oxide and catalyst |
| EP0294204A2 (en) * | 1987-06-05 | 1988-12-07 | Babcock-Hitachi Kabushiki Kaisha | A process for producing a catalyst for denitration by catalytic reduction using ammonia |
| JP2007216137A (en) * | 2006-02-16 | 2007-08-30 | Mitsubishi Heavy Ind Ltd | Catalyst for treating exhaust gas and its manufacturing method |
| CN101318697A (en) * | 2008-07-11 | 2008-12-10 | 四川华铁钒钛科技股份有限公司 | Method for preparing titanium dioxide product for high-specific surface area denitrating catalyst |
| CN101396657A (en) * | 2008-10-23 | 2009-04-01 | 清华大学 | Denitration catalyst using titanium dioxide as raw material and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| The Role of Vanadium Oxide on the Titania Transformation under Thermal Treatments and Surface Vanadium States;Miguel A. Ban˜ ares 等;《JOURNAL OF SOLID STATE CHEMISTRY》;19961231;第124卷;全文 * |
| V-W/TiO2/γ-Al2O3催化剂催化还原NO的研究;赵琳琳 等;《环境科学与技术》;20120531;第35卷(第5期);全文 * |
| WO3添加方式对V2O5/TiO2催化剂性能影响;贺媛媛 等;《功能材料》;20121231;第43卷(第16期);全文 * |
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