CN116586070A - Non-noble metal catalyst for CO oxidation catalysis and application thereof - Google Patents
Non-noble metal catalyst for CO oxidation catalysis and application thereof Download PDFInfo
- Publication number
- CN116586070A CN116586070A CN202310530525.5A CN202310530525A CN116586070A CN 116586070 A CN116586070 A CN 116586070A CN 202310530525 A CN202310530525 A CN 202310530525A CN 116586070 A CN116586070 A CN 116586070A
- Authority
- CN
- China
- Prior art keywords
- powder
- catalyst
- noble metal
- catalysis
- oxidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 44
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 19
- 230000003647 oxidation Effects 0.000 title claims abstract description 18
- 229910000510 noble metal Inorganic materials 0.000 title claims abstract description 17
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000011593 sulfur Substances 0.000 claims abstract description 12
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 12
- 229910018098 Ni-Si Inorganic materials 0.000 claims abstract description 10
- 229910018529 Ni—Si Inorganic materials 0.000 claims abstract description 10
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 10
- 238000005245 sintering Methods 0.000 claims abstract description 10
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 9
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 23
- 230000003197 catalytic effect Effects 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 15
- 238000002360 preparation method Methods 0.000 abstract description 9
- 239000003426 co-catalyst Substances 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 18
- 238000004321 preservation Methods 0.000 description 16
- 238000001291 vacuum drying Methods 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 238000001035 drying Methods 0.000 description 7
- 239000000779 smoke Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000498 ball milling Methods 0.000 description 6
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 5
- 238000007873 sieving Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 4
- 239000011812 mixed powder Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000003826 uniaxial pressing Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- -1 CuSO4 Chemical class 0.000 description 1
- 238000003775 Density Functional Theory Methods 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/864—Removing carbon monoxide or hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a non-noble metal catalyst for CO oxidation catalysis and application thereof. Ni powder and Si powder are used as raw materials, and are mixed with rare earth element cerium, and different proportions are adopted to perform reaction synthesis of multi-class porous Ni-Si compounds, so that the multi-class porous Ni-Si compounds are used in the field of CO catalysis, and belong to the field of catalytic chemistry. The catalyst comprises the following components in percentage by weight: the mass ratio of the Ni to the Si powder is 4:1-8:1, the mass ratio of the doped cerium powder is 0.5% -1%, and a series of rare earth element doped porous Ni-Si intermetallic compounds are generated through reaction. And obtaining a sample to be sintered by adopting a single-shaft mould pressing method, and completing the preparation of the catalyst by adopting a step-by-step heating process through vacuum sintering. The catalyst can realize complete CO conversion at about 280 ℃ and contains H 2 O and SO 2 When used in the environment of (a), the water-sulfur resistance increases with the use timeAnd the efficiency of catalyzing CO oxidation is restored to the original level along with time, and the catalytic efficiency is still kept at the original level after continuous testing for about 120 hours. The non-noble metal CO catalyst provided by the invention has the advantages of simple process, safety, no pollution, low cost and high reliability, and effectively provides a feasible water-sulfur-resistant catalysis method for the CO catalysis field.
Description
Technical Field
The invention relates to a non-noble metal catalyst for CO oxidation catalysis and application thereof, belonging to the technical field of catalytic chemistry.
Background
With the high-speed development of the economic level of China, the problem of atmospheric pollutants is caused. At present, the emission of CO in China is very large, and the treatment of CO becomes a key problem. On the basis of the prior art, a high-efficiency removal method needs to be found. In CO purification technology, CO is converted to CO by catalytic oxidation 2 Is a purification method with high efficiency, energy saving and no secondary pollution.
According to the current state of research, catalysts for the catalytic oxidation of CO are mainly noble or non-noble metals. Following the original work of platinum wires, many noble metals such as Pt, rh, pd, ir, rh and Au nanoparticles were used to catalyze CO oxidation. Most noble metals such as gold can act as catalysts because the negative charge accumulated on the noble metal can weaken the O-O bond, activate the oxygen molecule for further catalytic reaction, and the positive charge accumulated on the noble metal can promote adsorption of CO. However, these catalysts are often expensive and suffer from CO poisoning, which prevents the catalytic process from running permanently. There are also many non-noble metals such as Cr, ce, cu, etc. that have been investigated for catalyzing CO oxidation. However, non-noble metal based catalyst pair H 2 O-sensitivity, especially in the presence of SO 2 The active component is easily converted to metal sulfates, such as CuSO4, resulting in complete irreversible deactivation of the catalyst.
Therefore, there is a need to find new materials as catalysts to achieve the water-sulfur resistance of the catalyst. Some studies describe the use of nickel catalysts for CO oxidation reactions. And studies have shown that other catalytic reactions are carried out using nickel compounds. At the same timeThe calculation research of the density functional theory shows that when the intermetallic compound of Ni-Si is used as a catalyst in a simple atmosphere without water sulfur, the catalytic oxidation of CO is mainly carried out by an Eley-Rideal mechanism and is carried out by O 2 Near the catalyst surface, the CO in the gas is near O 2 CO after formation of transition state 2 The desorption achieves the effect of catalytic oxidation, and the maximum energy barrier in the reaction is 1.64eV. This calculation shows that the intermetallic compound of Ni-Si can weaken O-O bond and activate oxygen molecule to further catalyze reaction.
In Ni-Si systems, ni is present 3 Si、Ni 2 Si、Ni 16 Si 7 、Ni 31 Si 12 And several intermetallic compounds. The intermetallic compounds have good high-temperature strength, corrosion resistance and oxidation resistance, are promising high-temperature corrosion-resistant materials, and can meet the treatment of sintering flue gas at high temperature. Meanwhile, the rare earth element Ce is doped in the Ni-Si intermetallic compound, so that the average grain size of the original intermetallic compound can be increased, and the catalytic reaction can be facilitated. Therefore, the invention achieves the water-sulfur resistance of the catalyst at high temperature by preparing the rare earth element doped Ni-Si system intermetallic compound. The porous Ni-Si intermetallic compound is synthesized by adopting powder metallurgy methods such as mixing, cold pressing, vacuum sintering and the like, has good water-sulfur resistance, and better solves the problem that the catalyst is easy to be H in the CO catalytic oxidation process 2 O、SO 2 Problem of influence.
Disclosure of Invention
The invention discloses a non-noble metal catalyst for CO oxidation catalysis and application thereof, which are specifically completed according to the following steps:
1. the preparation process comprises the following steps: mixing nickel, silicon, cerium powder, alcohol and polyvinyl butyral ester in a certain proportion, drying in a vacuum box and sieving to obtain powder particles; pressing the powder particles into a sample to be sintered by a uniaxial pressing method; placing a sample to be sintered in a vacuum heating furnace for heat treatment: preserving heat at a low temperature stage to remove polyvinyl alcohol Ding Quanzhi and water vapor; the heat preservation in the middle temperature stage meets the formation of pores of the catalyst; preserving heat for a long time at a high temperature stage, thereby providing time for the diffusion and reaction of elements; the CO catalyst meeting the requirements is obtained after sintering heat treatment, and the CO catalyst is filled into a reactor to be used in an environment containing water and sulfur;
the granularity of the Ni powder and the Si powder added in the preparation process is 3-15 mu m, and the mass ratio of Ni to Si is 4:1-8:1, preferably 6:1; the mass ratio of the doped cerium powder is 0.5% -1%; the mass ratio of the added polyvinyl butyral is 5-8%, and the mass ratio of the alcohol is 15-18%; the pressure used by the uniaxial pressing method is 0.5-1MPa, and the pressure maintaining time is 45-80s; the low-temperature-stage heat preservation measures are in particular heat preservation for 30-45min at 100-200 ℃, the medium-temperature-stage heat preservation measures are in particular heat preservation for 3-4h at 500-650 ℃, and the high-temperature-stage heat preservation measures are in particular heat preservation for 3-4h at 1000 ℃.
2. The specific application is as follows: in the simulation test of a simple atmosphere with the concentration of 6000ppm CO and the smoke amount of 1L/min, the catalyst can realize complete conversion of CO at about 280 ℃; at 10% concentration H 2 O, 500ppm concentration SO 2 And 6000ppm CO, the smoke amount is 1L/min, the catalytic efficiency of the catalyst gradually returns to the original level along with the time increase when the catalyst reacts in the environment with the reaction temperature of 280 ℃, and the catalytic efficiency still keeps high in the subsequent long-time catalytic process. This shows that the catalyst has better water-sulfur resistance.
The invention discloses a preparation method of a water-sulfur-resistant CO catalyst, which has the advantages that:
(1) The prepared catalyst has low cost, simple preparation process and high reliability;
(2) The catalyst has better water-sulfur resistance and can be used in complex sintering atmosphere;
drawings
FIG. 1 is a scanning electron microscope image of an undoped catalyst after being subjected to different environmental atmospheres.
FIG. 2 is a graph of CO removal rate versus temperature for undoped catalysts under different ambient atmospheres.
FIG. 3 variation of CO removal rate of undoped catalyst with increasing catalytic time under complex atmosphere.
Detailed description of the preferred embodiments
The invention will be further illustrated with reference to specific examples, but the invention is not limited to these examples.
Example 1
(1) Powder mixing treatment: ball-milling and mixing 4g of nickel powder with the granularity of 10 mu m, 1g of silicon powder with the granularity of 8 mu m, 0.03g of cerium powder and 0.5g of alcohol in a ball-milling tank for 16 hours, and drying the powder in a vacuum drying oven at 80 ℃ for 1 hour after mixing;
(2) Granulating: adding 0.2g of polyvinyl butyral ester into 0.5g of alcohol, mixing, adding the previous mixed powder, sieving and granulating by using a 60-mesh screen, and drying the obtained powder in a vacuum drying oven at 60 ℃ for 3 hours;
(3) Tabletting: tabletting the granulated powder by adopting a uniaxial compression molding method to prepare a sample, wherein the adopted pressure is 1MPa, and the pressure maintaining time is 40s;
(4) Sintering: heating the sample to be sintered in a vacuum furnace with vacuum degree not lower than 1×10 - 3 Pa, heating rate is 10 ℃/min, heat preservation is carried out for 45min when heating to 150 ℃, heat preservation is carried out for 4h when heating to 600 ℃, and heat preservation is carried out for 4h when heating to 1000 ℃;
(5) Post-treatment: mixing the sintered sample with distilled water, placing the mixture in an ultrasonic cleaner for cleaning for 1h, and vacuum drying to finish the preparation of the CO catalyst;
(6) The specific application is as follows: the catalyst is placed in a simple atmosphere with 6000ppm concentration of CO and 1L/min smoke amount, and the catalytic performance after the test is good.
Example 2
(1) Powder mixing treatment: ball-milling 4.5g of nickel powder with the granularity of 5 mu m, 1g of silicon powder with the granularity of 3 mu m and 0.5g of alcohol in a ball milling tank, mixing for 16 hours, and drying the powder in a vacuum drying oven at 80 ℃ for 1 hour after mixing;
(2) Granulating: adding 0.2g of polyvinyl butyral ester into 0.5g of alcohol, mixing, adding the previous mixed powder, sieving and granulating by using a 60-mesh screen, and drying the obtained powder in a vacuum drying oven at 60 ℃ for 3 hours;
(3) Tabletting: tabletting the granulated powder by adopting a uniaxial compression molding method to prepare a sample, wherein the adopted pressure is 1MPa, and the pressure maintaining time is 40s;
(4) Sintering: heating the sample to be sintered in a vacuum furnace with vacuum degree not lower than 1×10 - 3 Pa, heating rate is 10 ℃/min, heat preservation is performed for 30min when heating to 120 ℃, heat preservation is performed for 4h when heating to 550 ℃, and heat preservation is performed for 4h when heating to 1000 ℃;
(5) Post-treatment: mixing the sintered sample with distilled water, placing the mixture in an ultrasonic cleaner for cleaning for 1h, and vacuum drying to finish the preparation of the CO catalyst;
(6) The specific application is as follows: the catalyst is placed in a simple atmosphere with 6000ppm concentration of CO and 1L/min smoke amount, and the catalytic performance after the test is good.
At 10% concentration H 2 O, 500ppm concentration SO 2 And 6000ppm CO, the smoke amount is 1L/min, the catalytic efficiency of the catalyst gradually returns to the original level along with the time increase when the catalyst reacts in the environment with the reaction temperature of 280 ℃, and the catalytic efficiency still keeps high in the subsequent long-time catalytic process.
Example 3
(1) Powder mixing treatment: 5.4g of nickel powder with the granularity of 5 mu m, 1g of silicon powder with the granularity of 3 mu m, 0.06g of cerium powder and 0.5g of alcohol are ball-milled and mixed for 16 hours in a ball-milling tank, and the powder is dried for 1 hour at 80 ℃ in a vacuum drying oven after being mixed;
(2) Granulating: adding 0.2g of polyvinyl butyral ester into 0.5g of alcohol, mixing, adding the previous mixed powder, sieving and granulating by using a 60-mesh screen, and drying the obtained powder in a vacuum drying oven at 60 ℃ for 3 hours;
(3) Tabletting: tabletting the granulated powder by adopting a uniaxial compression molding method to prepare a sample, wherein the adopted pressure is 1MPa, and the pressure maintaining time is 40s;
(4) Sintering: heating the sample to be sintered in a vacuum furnace with vacuum degree not lower than 1×10 - 3 Pa, heating rate of 10deg.C/min, heating to 120deg.C, maintaining the temperature for 30min, and heating to 550deg.CPreserving heat for 3 hours, and preserving heat for 4 hours when the temperature is raised to 1000 ℃;
(5) Post-treatment: mixing the sintered sample with distilled water, placing the mixture in an ultrasonic cleaner for cleaning for 1h, and vacuum drying to finish the preparation of the CO catalyst;
(6) The specific application is as follows: the catalyst is placed in a simple atmosphere with 6000ppm concentration of CO and 1L/min smoke amount, and the catalytic performance after the test is good.
Example 4
(1) Powder mixing treatment: 6g of nickel powder with the granularity of 8 mu m, 1g of silicon powder with the granularity of 8 mu m, 0.07g of cerium powder and 0.5g of alcohol are ball-milled and mixed for 16 hours in a ball-milling tank, and the powder is dried for 1 hour at 80 ℃ in a vacuum drying oven after being mixed;
(2) Granulating: adding 0.2g of polyvinyl butyral ester into 0.5g of alcohol, mixing, adding the previous mixed powder, sieving and granulating by using a 60-mesh screen, and drying the obtained powder in a vacuum drying oven at 60 ℃ for 3 hours;
(3) Tabletting: tabletting the granulated powder by adopting a uniaxial compression molding method to prepare a sample, wherein the adopted pressure is 1MPa, and the pressure maintaining time is 40s;
(4) Sintering: heating the sample to be sintered in a vacuum furnace with vacuum degree not lower than 1×10 - 3 Pa, heating rate is 10 ℃/min, heat preservation is performed for 30min when heating to 150 ℃, heat preservation is performed for 3h when heating to 600 ℃, and heat preservation is performed for 4h when heating to 1000 ℃;
(5) Post-treatment: mixing the sintered sample with distilled water, placing the mixture in an ultrasonic cleaner for cleaning for 1h, and vacuum drying to finish the preparation of the CO catalyst;
(6) The specific application is as follows: the catalyst is placed in a simple atmosphere with 6000ppm concentration of CO and 1L/min smoke, and the catalyst has good catalytic performance after testing, can realize complete CO conversion at about 280 ℃ and has long-time water-sulfur resistance.
Claims (3)
1. The invention discloses a non-noble metal catalyst for CO oxidation catalysis and application thereof, which are characterized in that the non-noble metal catalyst is prepared from nickel powder, silicon powder and cerium powder, wherein the granularity of the added powder is 3-15 mu m.
2. The non-noble metal catalyst for CO oxidation catalysis and application thereof according to claim 1, wherein the mass ratio of the nickel powder to the silicon powder is 4:1-8:1, the optimal selection is 6:1, the mass ratio of the doped cerium powder is 0.5% -1%, and a series of rare earth element doped porous Ni-Si intermetallic compounds including Ni can be obtained after sintering reaction 3 Si、Ni 2 Si、Ni 16 Si 7 、Ni 31 Si 12 Etc.
3. The non-noble metal catalyst for CO oxidation catalysis and application thereof according to claim 1, wherein the catalyst can realize complete CO conversion at about 280 ℃ when reacting in a simple environment; at 10% concentration H 2 O and SO at 500ppm concentration 2 The water-sulfur resistance of the catalyst is enhanced with the increase of the service time, the efficiency of catalyzing the oxidation of CO is restored to the original level with the time, and the catalyst can be used for a long time in the presence of H 2 O and SO 2 Is used in the environment of (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530525.5A CN116586070A (en) | 2023-05-11 | 2023-05-11 | Non-noble metal catalyst for CO oxidation catalysis and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530525.5A CN116586070A (en) | 2023-05-11 | 2023-05-11 | Non-noble metal catalyst for CO oxidation catalysis and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116586070A true CN116586070A (en) | 2023-08-15 |
Family
ID=87594909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310530525.5A Pending CN116586070A (en) | 2023-05-11 | 2023-05-11 | Non-noble metal catalyst for CO oxidation catalysis and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116586070A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030175589A1 (en) * | 1998-09-08 | 2003-09-18 | Hideya Kaminaka | Process for manufacture of negative electrode material for a non-aqueous electrolyte secondary battery |
| KR20040064756A (en) * | 2003-01-10 | 2004-07-21 | 학교법인 인하학원 | Aluminide based porous intermetallic compounds and their preparation |
| JP2015089969A (en) * | 2013-11-07 | 2015-05-11 | 株式会社豊田中央研究所 | Ni-Si ALLOY FINE PARTICLE AND MANUFACTURING METHOD THEREFOR |
| CN107267847A (en) * | 2017-06-14 | 2017-10-20 | 湘潭大学 | A kind of resistance to high temperature oxidation, iron-based porous material of caustic corrosion resistance and preparation method thereof |
| CN107723519A (en) * | 2017-10-20 | 2018-02-23 | 湘潭大学 | High temperature resistance chlorination corrosion Ni Cr Si porous materials and preparation method thereof |
| CN115772679A (en) * | 2022-12-20 | 2023-03-10 | 中南大学 | Ni-Si intermetallic compound porous material, preparation method and electrocatalysis application thereof |
-
2023
- 2023-05-11 CN CN202310530525.5A patent/CN116586070A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030175589A1 (en) * | 1998-09-08 | 2003-09-18 | Hideya Kaminaka | Process for manufacture of negative electrode material for a non-aqueous electrolyte secondary battery |
| KR20040064756A (en) * | 2003-01-10 | 2004-07-21 | 학교법인 인하학원 | Aluminide based porous intermetallic compounds and their preparation |
| JP2015089969A (en) * | 2013-11-07 | 2015-05-11 | 株式会社豊田中央研究所 | Ni-Si ALLOY FINE PARTICLE AND MANUFACTURING METHOD THEREFOR |
| CN107267847A (en) * | 2017-06-14 | 2017-10-20 | 湘潭大学 | A kind of resistance to high temperature oxidation, iron-based porous material of caustic corrosion resistance and preparation method thereof |
| CN107723519A (en) * | 2017-10-20 | 2018-02-23 | 湘潭大学 | High temperature resistance chlorination corrosion Ni Cr Si porous materials and preparation method thereof |
| CN115772679A (en) * | 2022-12-20 | 2023-03-10 | 中南大学 | Ni-Si intermetallic compound porous material, preparation method and electrocatalysis application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵小云等: ""钛基Ir-Si-Ce复合电极制备及在电沉积钴中的应用"", 《稀有金属材料与工程》, vol. 49, no. 5, 31 December 2020 (2020-12-31), pages 1723 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Prasad et al. | Applications and preparation methods of copper chromite catalysts: a review | |
| CN1305567C (en) | Catalyst for autothermal reformation of methanol to prepared hydrogen and its prepn process and application | |
| CN110102294B (en) | Composite oxide loaded Pd-based catalyst, and preparation method and application thereof | |
| JP2010099638A (en) | Catalyst, catalyst for purifying exhaust gas, and method for manufacturing the catalyst | |
| CN114853567B (en) | Catalyst for preparing low-carbon alcohol by converting carbon dioxide, and preparation method and application thereof | |
| CN111151245B (en) | Gold nanoflower catalyst with biomass activated carbon as carrier and preparation method and application thereof | |
| CN107138171B (en) | A kind of preparation method of surface-functionalized molybdenum carbide-C catalyst for carbon dioxide hydrogenation reaction | |
| CN111841540A (en) | Spinel type CuFe rich in oxygen vacancy2O4Method for preparing photocatalyst | |
| JP2007069105A (en) | Catalyst and its manufacturing method | |
| CN109847747B (en) | Low-temperature water-vapor shift catalyst and preparation method thereof | |
| CN112742417B (en) | Noble metal catalyst and preparation method and application thereof | |
| CN116586070A (en) | Non-noble metal catalyst for CO oxidation catalysis and application thereof | |
| CN110876943B (en) | Oxide-modified Pt-Co bimetallic catalyst, preparation method and application thereof to CO oxidation | |
| CN115646510B (en) | Catalyst for CO selective oxidation reaction and preparation method thereof | |
| CN114160148B (en) | Cu-based catalyst for preparing hydrogen by reforming methanol and preparation method and application thereof | |
| CN115069267B (en) | Perovskite-based formic acid hydrogen production catalyst and preparation method and application thereof | |
| CN1544310A (en) | Ethanol vapour reforming reaction catalyzer for making hydrogen and its use method | |
| CN115382542A (en) | Double-catalyst for hydrogen production by biological ethanol reforming and preparation method thereof | |
| CN102389827A (en) | Loaded metal hydrogenation catalyst, its preparation method and application in ethylene glycol preparation | |
| CN110871079A (en) | Lanthanum-cobalt-based supported catalyst and application thereof in diesel engine tail gas treatment | |
| CN112916031B (en) | Pt/alpha-MoC1-xMolybdenum net catalyst, preparation method and application thereof | |
| CN111266116A (en) | Supported nano multi-metal catalyst, preparation method and application thereof to CO oxidation | |
| CN111330592A (en) | Cobalt-nickel alloy modified platinum-based catalyst, preparation method and application thereof to CO oxidation | |
| CN111266117A (en) | High-dispersion Pt-based catalyst for reducing perovskite precursor, preparation method and application of catalyst to CO oxidation | |
| CN115318285A (en) | Self-activating Pt-based catalyst for hydrogen production by reforming bioethanol and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |