CN104549213A - Methane catalytic oxidation catalyst for natural gas vehicle and preparation method of methane catalytic oxidation catalyst - Google Patents
Methane catalytic oxidation catalyst for natural gas vehicle and preparation method of methane catalytic oxidation catalyst Download PDFInfo
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- CN104549213A CN104549213A CN201410389668.XA CN201410389668A CN104549213A CN 104549213 A CN104549213 A CN 104549213A CN 201410389668 A CN201410389668 A CN 201410389668A CN 104549213 A CN104549213 A CN 104549213A
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention relates to a methane catalytic oxidation catalyst for natural gas vehicle exhaust aftertreatment and a preparation method of the methane catalytic oxidation catalyst. The methane catalytic oxidation catalyst is a stannum-zirconium composite oxide solid solution catalyst, wherein the stannum/zirconium atomic ratio is at least 1.1, the general equation is Sn(1-x)ZrxM0.10O2, M is at least one of rare earth and transition metal, and x is a coefficient; the methane catalytic oxidation catalyst is prepared from the following components in percentage by weight: 50-70% of a stannic oxide (SnO2) precursor, 15-40% of a zirconium dioxide (ZrO2) precursor and the balance being a stabilizer oxide precursor. The preparation method sequentially comprises the following steps: (1) preparing mixed salt; (2) adding a precipitant-urea; (3) carrying out homogeneous precipitation reaction; and (4) roasting to obtain a finished product. The methane catalytic oxidation catalyst has the high active component content and can completely oxidize methane at about 500 DEG C, and the catalytic oxidation ability of a stannum-zirconium composite oxide solid solution on the methane, propane and carbon monoxide can be remarkably improved; and besides, the preparation method is simple, can be operated easily and is low in cost.
Description
Technical field
The present invention relates to catalyst, particularly relate to a kind of gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation Catalysts and its preparation method.
Background technology
Existing natural gas is as a kind of clean energy, and the ratio in energy resource structure rises day by day.But the ignition temperature of its main component methane is very high, and thus efficiency of combustion is lower, and a small amount of nitrogen oxide NO can be produced in combustion
xwith other imperfect combustion product, thus the environmental pollution caused.Methane oxygen-enriched combusting under catalyst existence condition more meets environmental requirement.
The catalyst of automobile-used Catalytic methane oxidation mainly contains platinum Pt, palladium Pd, rhodium Rh even load type noble metal catalyst, Ca-Ti ore type O composite metallic oxide catalyst and supported transitional metal oxide catalyst.Platinum Pt, palladium Pd, rhodium Rh even load type noble metal catalyst is used for methyl hydride combustion and has good low-temperature catalytic activity, but this kind of catalyst also exists expensive, the problems such as the poor and easy-sintering of heat endurance, limit its application in gas-fueled vehicles exhaust aftertreatment, and Ca-Ti ore type O composite metallic oxide catalyst and supported transitional metal oxide catalyst due to specific surface little, bad mechanical strength and the active factor such as low, also be difficult to industrialization use, Ca-Ti ore type O composite metallic oxide catalyst is in strong exothermal reaction, also there is high temperature easy-sintering and B position short period element the problem such as easily to run off.
Summary of the invention
A technical problem to be solved by this invention is the defect making up above-mentioned prior art, provides a kind of gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst.
Another technical problem to be solved by this invention is the defect making up above-mentioned prior art, provides a kind of gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation method for preparing catalyst.
Gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst technology problem of the present invention is solved by the following technical programs.
This gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, belongs to composite oxide solid solution catalyst.
The feature of this gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst is:
Described composite oxide solid solution catalyst is tin zirconium mixed oxide solid solution catalyst, and wherein tin/zirconium (Sn/Zr) atomic ratio is at least 1.1, and reaction expression is Sn
1-xzr
xm
0.10o
2;
In reaction expression:
M is at least one in rare earth and transition metal;
X is coefficient;
Its component and percentage by weight as follows:
Tin ash SnO
2presoma 50% ~ 70%;
Zirconium dioxide ZrO
2presoma 15% ~ 40%;
The presoma surplus of stabilizer oxide.
The tin ion Sn on described tin zirconium mixed oxide solid solution catalyst surface
4+, be that the dominant species of redox occurs, its concentration is excessive or too smallly all can not generate enough oxidation intermediates, is unfavorable for CH
4oxidation.Due to tin ion Sn
4+with zirconium ion Zr
4+radius is close, is easy to form tin-zirconium (Sn-Zr) solid solution, and stabilizer oxide is also exist with solid solution thereof, when crystal structure is homogeneous solid solution, active component content is high, when tin/zirconium (Sn/Zr) atomic ratio is at least 1.1, and tin ion Sn
4+be conducive to the oxidation reaction of catalyst at the degree of segregation of catalyst surface, and heat endurance is high, oxygen storage capacity is good, can significantly improve tin-zirconium (Sn-Zr) solid solution to methane CH
4, propane C
3h
8with the catalytic oxidation ability of carbon monoxide CO.
Gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst technology problem of the present invention is solved by following further technical scheme.
M in described reaction expression is at least one in cerium Ce and yttrium Y or transition metal Cu, Co, Fe, Mn.
The presoma of described tin ash is four water butter of tin SnCl
44H
2o.
The presoma of described zirconium dioxide is five water zirconium nitrate Zr (NO
3)
45H
2o, eight water zirconium oxychloride ZrOCl
28H
2o, and Carbon Dioxide zirconium Zr
3cO
3o
5in one.
The presoma of described stabilizer oxide is six water cerous nitrate Ce (NO
3)
26H
2o, five water yttrium nitrate Y (NO
3)
35H
2o, cobalt nitrate hexahydrate Co (NO
3)
26H
2o, six water manganese nitrate Mn (NO
3)
26H
2o, nitrate trihydrate copper Cu (NO
3)
23H
2o, and nine water ferric nitrate Fe (NO
3)
39H
2one in O.
Preferably: the presoma of described stabilizer oxide is six water cerous nitrate Ce (NO
3)
26H
2o and five water yttrium nitrate Y (NO
3)
35H
2one in O.
Preparation method's technical problem of gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst of the present invention is solved by the following technical programs.
The preparation method of this gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, belongs to urea combustion and prepares composite oxide solid solution catalyst, adopts urea as precipitating reagent.
The feature of the preparation method of this gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst is:
Described composite oxide solid solution catalyst is tin zirconium mixed oxide solid solution catalyst, and wherein tin/zirconium (Sn/Zr) atomic ratio is at least 1.1, and reaction expression is Sn
1-xzr
xm
0.10o
2;
In reaction expression:
M is at least one in rare earth and transition metal;
X is coefficient;
Its component and percentage by weight as follows:
Tin ash SnO
2presoma 50% ~ 70%;
Zirconium dioxide ZrO
2presoma 15% ~ 40%;
The presoma surplus of stabilizer oxide;
There are following steps successively:
1) salt-mixture is prepared:
By tin ash SnO
2presoma, zirconium dioxide ZrO
2presoma and the presoma of stabilizer oxide be placed in ball mill or mortar respectively according to described percentage by weight, be uniformly mixed into salt-mixture:
2) precipitating reagent urea is added:
The precipitating reagent urea that weight is its weight 0.5 times ~ 5.0 times is added, ball milling or grinding 0.2h ~ 1.2h, obtained pastel in above-mentioned salt-mixture;
3) homogeneous precipitation reaction is carried out:
Above-mentioned pastel is placed in baking oven, at temperature is 150 DEG C ~ 200 DEG C, toasts 10h ~ 13h, carries out homogeneous precipitation reaction, and the poisonous substance chlorion Cl in evaporative removal solid solution
-1, obtained semi-finished product catalyst, both can not produce pH value and change from small to big, and " zirconium tinning " structure formed, also can not produce pH value from large to small, and " the tin bag zirconium " structure that may be formed;
4) roasting obtains finished product:
Above-mentioned semi-finished product catalyst is placed in chamber type electric resistance furnace also known as Muffle furnace, roasting 3h ~ 6h in the air atmosphere at temperature is 500 DEG C ~ 800 DEG C, obtained finished product solid solution catalyst.
Preparation method's technical problem of gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst of the present invention is solved by following further technical scheme.
Described step 1) in the presoma of tin ash be four water butter of tin SnCl
44H
2o;
Described step 1) in the presoma of zirconium dioxide be five water zirconium nitrate Zr (NO
3)
45H
2o, eight water zirconium oxychloride ZrOCl
28H
2o, and Carbon Dioxide zirconium Zr
3cO
3o
5in one.
Described step 1) in the presoma of stabilizer oxide be six water cerous nitrate Ce (NO
3)
26H
2o, five water yttrium nitrate Y (NO
3)
35H
2o, cobalt nitrate hexahydrate Co (NO
3)
26H
2o, six water manganese nitrate Mn (NO
3)
26H
2o, nitrate trihydrate copper Cu (NO
3)
23H
2o, and nine water ferric nitrate Fe (NO
3)
39H
2one in O.
Preferably: the presoma of described stabilizer oxide is the one in six water cerous nitrate Ce (NO3) 26H2O and five water yttrium nitrate Y (NO3) 35H2O.
Described step 2) in salt-mixture, add precipitating reagent amount of urea be: the rare earth ion in urea and salt-mixture and the mol ratio of transition metal ions are 20.
The present invention's beneficial effect is compared with prior art:
Catalyst activity constituent content of the present invention is high, when tin/zirconium (Sn/Zr) atomic ratio is at least 1.1, and tin ion Sn
4+the oxidation reaction of catalyst is conducive at the degree of segregation of catalyst surface, and heat endurance is high, oxygen storage capacity is good, in Catalytic methane oxidation course of reaction, adopt air as oxidant, initiation temperature and complete ignition temperature low, temperature about 500 DEG C by combustion of methane, can significantly improve tin-zirconium (Sn-Zr) solid solution to methane CH
4, propane C
3h
8with the catalytic oxidation ability of carbon monoxide CO.The preparation method of catalyst of the present invention is simple, is easy to operation, with low cost.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described.
Detailed description of the invention one
A kind of reaction expression is Sn
0.50zr
0.40ce
0.10o
2gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, its preparation method has following steps successively:
1) salt-mixture is prepared
Take the presoma four water butter of tin SnCl of the tin ash of 12.6g
44H
2the presoma five water zirconium nitrate Zr (NO of the zirconium dioxide of O, 12.4g
3)
45H
2o, and the presoma six water cerous nitrate Ce (NO of the stabilizing agent cerium oxide of 3.1g
3)
26H
2o, is placed in mortar, is uniformly mixed into salt-mixture;
2) in above-mentioned salt-mixture, the 40g urea that weight is its weight 1.42 times is added, grinding 0.5h, obtained pastel;
3) above-mentioned pastel is placed in baking oven, at temperature is 200 DEG C, toasts 12h, obtained semi-finished product catalyst;
4) above-mentioned semi-finished product catalyst is placed in chamber type electric resistance furnace also known as Muffle furnace, roasting 3h at temperature is 500 DEG C, obtained finished product solid solution catalyst Sn
0.50zr
0.40ce
0.10o
2.
The solid solution catalyst Sn that this detailed description of the invention one is obtained
0.50zr
0.40ce
0.10o
2, the volume ratio of air and methane be 49, air velocity is 30000m
3/ h, catalyst amount are under the condition of 0.2g, and the methane conversion (%) at different stabilizers temperature sees the following form 1:
Table 1
| Temperature (DEG C) | 340 | 360 | 380 | 400 | 420 | 440 | 460 | 480 | 520 | 560 |
| Detailed description of the invention one | 31.99 | 52.92 | 71.31 | 85.60 | 92.68 | 97.18 | -- | -- | -- | -- |
| Detailed description of the invention two | 38.71 | 58.71 | 75.37 | 86.73 | 93.75 | 97.21 | 98.60 | -- | -- | -- |
| Detailed description of the invention three | 7.58 | 19.47 | 35.28 | 54.06 | 69.11 | 77.70 | 82.04 | 85.60 | 89.59 | 91.65 |
| Detailed description of the invention four | 21.46 | 39.39 | 62.00 | 80.86 | 90.91 | 95.39 | 96.39 | -- | -- | -- |
| Detailed description of the invention five | 16.02 | 36.66 | 57.48 | 74.77 | 85.66 | 90.88 | 94.68 | 96.98 | -- | -- |
Detailed description of the invention two
A kind of reaction expression is Sn
0.50zr
0.40y
0.10o
2gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, its preparation method is substantially with detailed description of the invention one, and difference is:
The presoma butter of tin SnCl of tin ash
44H
2o is 13.2g;
The presoma zirconium nitrate Zr (NO of zirconium dioxide
3)
45H
2o is 12.9g;
The presoma five water yttrium nitrate Y (NO of stabilizing agent
3)
35H
2o is 2.9g;
Urea is 120g, is 4.13 times of salt-mixture weight.
The solid solution catalyst Sn that detailed description of the invention two is obtained
0.50zr
0.40y
0.10o
2, the volume ratio of air and methane be 49, air velocity is 30000m
3/ h, catalyst amount are under the condition of 0.2g, and the methane conversion (%) at different stabilizers temperature sees the above table 1.
Detailed description of the invention three
A kind of reaction expression is Sn
0.50zr
0.40co
0.10o
2gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, its preparation method is substantially with detailed description of the invention one, and difference is:
The presoma butter of tin SnCl of tin ash
44H
2o is 13.5g;
The presoma zirconium nitrate Zr (NO of zirconium dioxide
3)
45H
2o is 13.2g;
The presoma cobalt nitrate hexahydrate Co (NO of stabilizing agent cobalt dioxide
3)
26H
2o is 2.2g;
Urea is 60g, is 2 times of salt-mixture weight.
The solid solution catalyst Sn that detailed description of the invention three is obtained
0.50zr
0.40co
0.10o
2, the volume ratio of air and methane be 49, air velocity is 30000m
3/ h, catalyst amount are under the condition of 0.2g, and the methane conversion (%) at different stabilizers temperature sees the above table 1.
Detailed description of the invention four
A kind of reaction expression is Sn
0.50zr
0.40mn
0.10o
2gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, its preparation method is substantially with detailed description of the invention one, and difference is:
The presoma butter of tin SnCl of tin ash
44H
2o is 13.3g;
The presoma zirconium nitrate Zr (NO of zirconium dioxide
3)
45H
2o is 14.4g;
The presoma six water manganese nitrate Mn (NO of stabilizing agent manganese dioxide
3)
26H
2o is 2.6g;
Urea is 35g, is 1.13 times of salt-mixture weight.
The solid solution catalyst Sn that detailed description of the invention four is obtained
0.50zr
0.40mn
0.10o
2, the volume ratio of air and methane be 49, air velocity is 30000m
3/ h, catalyst amount are under the condition of 0.2g, and the methane conversion (%) at different stabilizers temperature sees the above table 1.
Detailed description of the invention five
A kind of reaction expression is Sn
0.50zr
0.40fe
0.10o
2gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, its preparation method is substantially with detailed description of the invention one, and difference is:
The presoma butter of tin SnCl of tin ash
44H
2o is 15.2g;
The presoma zirconium nitrate Zr (NO of zirconium dioxide
3)
45H
2o is 12.4g;
The presoma nine water ferric nitrate Fe (NO of stabilizing agent nitrate
3)
39H
2o is 2.1g;
Urea is 150g, is 5 times of salt-mixture weight.
The solid solution catalyst Sn that detailed description of the invention five is obtained
0.50zr
0.40fe
0.10o
2, the volume ratio of air and methane be 49, air velocity is 30000m
3/ h, catalyst amount are under the condition of 0.2g, and the methane conversion (%) at different stabilizers temperature sees the above table 1.
Above five detailed description of the invention show, when tin/zirconium (Sn/Zr) atomic ratio of catalyst surface is at least 1.1, adopt the oxide of the oxide of different rare earths and transition metal as stabilizing agent, variant to the methane conversion of tin zirconium mixed oxide solid solution catalyst, wherein detailed description of the invention one and detailed description of the invention two adopt the oxide of cerium Ce and yttrium Y as stabilizing agent modification respectively to methane CH
4activity of conversion best, stable solid solution can be formed.
And transition metals cobalt Co, manganese Mn and iron Fe in detailed description of the invention three, detailed description of the invention four and detailed description of the invention five are as the tin zirconium mixed oxide solid solution catalyst of stabilizing agent modification, to catalyst oxidation performance, there is certain inhibition, cause catalyst light-off temperature higher than the tin zirconium mixed oxide solid solution catalyst of cerium Ce and yttrium Y as stabilizing agent modification.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention; make some equivalent alternative or obvious modification without departing from the inventive concept of the premise; and performance or purposes identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by submitted to claims.
Claims (10)
1. a gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst, belongs to composite oxide solid solution catalyst, it is characterized in that:
Described composite oxide solid solution catalyst is tin zirconium mixed oxide solid solution catalyst, and wherein tin/zirconium (Sn/Zr) atomic ratio is at least 1.1, and reaction expression is Sn
1-xzr
xm
0.10o
2;
In reaction expression:
M is at least one in rare earth and transition metal;
X is coefficient;
Its component and percentage by weight as follows:
Tin ash SnO
2presoma 50% ~ 70%;
Zirconium dioxide ZrO
2presoma 15% ~ 40%;
The presoma surplus of stabilizer oxide.
2. gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst as claimed in claim 1, is characterized in that:
M in described reaction expression is at least one in cerium Ce and yttrium Y.
3. gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst as claimed in claim 1, is characterized in that:
The presoma of described tin ash is four water butter of tin SnCl
44H
2o.
4. gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst as claimed in claim 1, is characterized in that:
The presoma of described zirconium dioxide is five water zirconium nitrate Zr (NO
3)
45H
2o, eight water zirconium oxychloride ZrOCl
28H
2o, and Carbon Dioxide zirconium Zr
3cO
3o
5in one.
5. gas-fueled vehicles exhaust aftertreatment Catalytic methane oxidation catalyst as claimed in claim 1, is characterized in that:
The presoma of described stabilizer oxide is six water cerous nitrate Ce (NO
3)
26H
2o, five water yttrium nitrate Y (NO
3)
35H
2o, cobalt nitrate hexahydrate Co (NO
3)
26H
2o, six water manganese nitrate Mn (NO
3)
26H
2o, nitrate trihydrate copper Cu (NO
3)
23H
2o, and nine water ferric nitrate Fe (NO
3)
39H
2one in O.
6., as the gas-fueled vehicles exhaust aftertreatment preparation method for Catalytic methane oxidation catalyst in Claims 1 to 5 as described in any one, it is characterized in that:
There are following steps successively:
1) salt-mixture is prepared:
By tin ash SnO
2presoma, zirconium dioxide ZrO
2presoma and the presoma of stabilizer oxide be placed in ball mill or mortar respectively according to described percentage by weight, be uniformly mixed into salt-mixture:
2) precipitating reagent urea is added:
The precipitating reagent urea that weight is its weight 0.5 times ~ 5.0 times is added, ball milling or grinding 0.2h ~ 1.2h, obtained pastel in above-mentioned salt-mixture;
3) homogeneous precipitation reaction is carried out:
Above-mentioned pastel is placed in baking oven, at temperature is 150 DEG C ~ 200 DEG C, toasts 10h ~ 13h, carries out homogeneous precipitation reaction, and the poisonous substance chlorion Cl in evaporative removal solid solution
-1, obtained semi-finished product catalyst, both can not produce pH value and change from small to big, and " zirconium tinning " structure formed, also can not produce pH value from large to small, and " the tin bag zirconium " structure that may be formed;
4) roasting obtains finished product:
Above-mentioned semi-finished product catalyst is placed in chamber type electric resistance furnace also known as Muffle furnace, roasting 3h ~ 6h in the air atmosphere at temperature is 500 DEG C ~ 800 DEG C, obtained finished product solid solution catalyst.
7. the gas-fueled vehicles exhaust aftertreatment preparation method of Catalytic methane oxidation catalyst as claimed in claim 6, is characterized in that:
Described step 1) in the presoma of tin ash be four water butter of tin SnCl
44H
2o.
8. the gas-fueled vehicles exhaust aftertreatment preparation method of Catalytic methane oxidation catalyst as claimed in claim 6, is characterized in that:
Described step 1) in the presoma of zirconium dioxide be five water zirconium nitrate Zr (NO
3)
45H
2o, eight water zirconium oxychloride ZrOCl
28H
2o, and Carbon Dioxide zirconium Zr
3cO
3o
5in one.
9. the gas-fueled vehicles exhaust aftertreatment preparation method of Catalytic methane oxidation catalyst as claimed in claim 6, is characterized in that:
Described step 1) in the presoma of stabilizer oxide be six water cerous nitrate Ce (NO
3)
26H
2o, five water yttrium nitrate Y (NO
3)
35H
2o, cobalt nitrate hexahydrate Co (NO
3)
26H
2o, six water manganese nitrate Mn (NO
3)
26H
2o, nitrate trihydrate copper Cu (NO
3)
23H
2o, and nine water ferric nitrate Fe (NO
3)
39H
2one in O.
10. the gas-fueled vehicles exhaust aftertreatment preparation method of Catalytic methane oxidation catalyst as claimed in claim 6, is characterized in that:
Described step 2) in salt-mixture, add precipitating reagent amount of urea be: the rare earth ion in urea and salt-mixture and the mol ratio of transition metal ions are 20.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051470A (en) * | 2017-04-26 | 2017-08-18 | 清华大学 | For loaded catalyst methane purifying in natural gas vehicle tail gas and preparation and application |
| CN108607544A (en) * | 2018-05-03 | 2018-10-02 | 青岛大学 | A kind of volatile organic matter low-temperature catalytic oxidation catalyst and its preparation and application |
| CN112264027A (en) * | 2020-10-27 | 2021-01-26 | 南京工业大学 | Copper-cobalt-cerium composite oxide catalytic combustion catalyst and preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992083B (en) * | 2010-10-27 | 2013-01-02 | 重庆海特汽车排气***有限公司 | Composite cerium-zirconium solid solution with high oxygen storage capability and preparation method thereof |
-
2014
- 2014-08-08 CN CN201410389668.XA patent/CN104549213B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051470A (en) * | 2017-04-26 | 2017-08-18 | 清华大学 | For loaded catalyst methane purifying in natural gas vehicle tail gas and preparation and application |
| CN107051470B (en) * | 2017-04-26 | 2019-11-12 | 清华大学 | For loaded catalyst and preparation and application methane purifying in natural gas vehicle tail gas |
| CN108607544A (en) * | 2018-05-03 | 2018-10-02 | 青岛大学 | A kind of volatile organic matter low-temperature catalytic oxidation catalyst and its preparation and application |
| CN108607544B (en) * | 2018-05-03 | 2021-01-15 | 青岛大学 | Low-temperature catalytic oxidation catalyst for volatile organic compounds and preparation and application thereof |
| CN112264027A (en) * | 2020-10-27 | 2021-01-26 | 南京工业大学 | Copper-cobalt-cerium composite oxide catalytic combustion catalyst and preparation method and application thereof |
| CN112264027B (en) * | 2020-10-27 | 2021-11-02 | 南京工业大学 | Copper-cobalt-cerium composite oxide catalytic combustion catalyst and preparation method and application thereof |
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