CN114602490A - Preparation method of integral catalytic combustion CO catalyst - Google Patents
Preparation method of integral catalytic combustion CO catalyst Download PDFInfo
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- CN114602490A CN114602490A CN202210308069.5A CN202210308069A CN114602490A CN 114602490 A CN114602490 A CN 114602490A CN 202210308069 A CN202210308069 A CN 202210308069A CN 114602490 A CN114602490 A CN 114602490A
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- 238000007084 catalytic combustion reaction Methods 0.000 title claims abstract description 27
- 239000003426 co-catalyst Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 150000000703 Cerium Chemical class 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 150000001879 copper Chemical class 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 150000002696 manganese Chemical class 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims abstract description 6
- SDKPSXWGRWWLKR-UHFFFAOYSA-M sodium;9,10-dioxoanthracene-1-sulfonate Chemical compound [Na+].O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2S(=O)(=O)[O-] SDKPSXWGRWWLKR-UHFFFAOYSA-M 0.000 claims abstract description 6
- 150000003754 zirconium Chemical class 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 11
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 10
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 5
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 5
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 229960000892 attapulgite Drugs 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052625 palygorskite Inorganic materials 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 229920000881 Modified starch Polymers 0.000 claims description 2
- 244000275012 Sesbania cannabina Species 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 2
- 229910021645 metal ion Inorganic materials 0.000 claims description 2
- 229910000510 noble metal Inorganic materials 0.000 abstract description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 7
- 230000032683 aging Effects 0.000 abstract description 7
- 230000003197 catalytic effect Effects 0.000 abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 abstract description 7
- 239000011593 sulfur Substances 0.000 abstract description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000460 chlorine Substances 0.000 abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 abstract description 6
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 229910002091 carbon monoxide Inorganic materials 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000000975 co-precipitation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 231100000344 non-irritating Toxicity 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- 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
- B01J23/84—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 arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
Abstract
The embodiment of the invention provides a preparation method of an integral catalytic combustion CO catalyst, which comprises the following steps: dissolving copper salt, cerium salt, manganese salt, zirconium salt and gold salt to prepare solution; adding a certain amount of citric acid under a constant temperature condition, maintaining the pH value and stirring to obtain a mixture; transferring the mixture into a muffle furnace to obtain a loose and porous gray black product, heating to 350 ℃, roasting, cooling, and crushing to obtain composite catalyst powder; fully and uniformly mixing the composite catalyst powder with a binder to obtain a mixture; adding water and a forming auxiliary agent into the mixture and stirring to obtain pug; the pug is subjected to mulling and aging and then is extruded and molded to obtain a honeycomb blank; and drying and roasting the honeycomb blank to obtain the integral catalytic combustion CO catalyst. According to the invention, non-noble metal active components are introduced, and the chlorine resistance and sulfur resistance of single noble metal are improved by compounding the non-noble metal and the noble metal, so that the catalytic activity is effectively improved.
Description
Technical Field
The invention relates to the technical field of catalyst preparation, in particular to a preparation method of an integral catalytic combustion CO catalyst.
Background
Carbon monoxide (CO) is a product of incomplete combustion of carbonaceous materials such as coal, petroleum and the like, and is a colorless, odorless and non-irritating toxic gas. The catalytic combustion method is an effective method for eliminating CO gas, and CO is catalytically oxidized into CO at normal temperature or certain temperature under the action of a catalyst2。
The catalyst is the key point of the research of a catalytic combustion method, and the CO catalytic combustion catalyst mainly takes a noble metal component as a main component at present and has poor sulfur resistance and chlorine resistance. In industrial practice, the composition of the gas may be very complex, and some sulfur-containing chlorine gas may cause the noble metal to be poisoned and deactivated, thereby affecting the catalytic activity of the CO catalytic combustion catalyst.
Disclosure of Invention
The embodiment of the invention aims to provide a preparation method of an integral catalytic combustion CO catalyst, aiming at introducing non-noble metal active components, and improving the chlorine resistance and sulfur resistance of a single noble metal by using the non-noble metal and the noble metal in a composite way, so as to effectively improve the catalytic activity.
The embodiment of the invention provides a preparation method of an integral catalytic combustion CO catalyst, which comprises the following steps:
s10: dissolving copper salt, cerium salt, manganese salt, zirconium salt and gold salt in deionized water according to a certain proportion to prepare a solution with a certain concentration;
s20: gradually adding a certain amount of citric acid into the solution under the constant temperature condition, maintaining the pH value within a certain range and stirring for 3 hours to obtain a mixture;
s30: transferring the mixture to a muffle furnace at 200 ℃ to ensure that the mixture is boiled, burned and decomposed to obtain a loose and porous gray black product, then heating to 350 ℃ and roasting for 3 hours, cooling and then crushing to 600 meshes to obtain composite catalyst powder;
s40: fully and uniformly mixing the composite catalyst powder and a binder according to a certain proportion to obtain a mixture;
s50: adding water and a forming aid into the mixture and stirring for 6 hours to obtain pug;
s60: after the pug is subjected to mulling and aging for 24 hours, the pug is extruded and molded by using a customized die to obtain a honeycomb blank;
s70: and drying the honeycomb blank body, and roasting at 500 ℃ for 4 hours to obtain the integral catalytic combustion CO catalyst.
Further, the copper salt, cerium salt, manganese salt, zirconium salt and gold salt are respectively copper nitrate, cerium nitrate, manganese nitrate, zirconium nitrate and chloroauric acid, and the molar ratio of the copper salt, the cerium salt, the manganese salt, the zirconium salt and the gold salt is (1-2): (1-5): (1-5):(1-3):(0.01-0.05).
Furthermore, the dosage of the citric acid is 1.1 to 1.3 times of the molar weight of the metal ions, and the pH value is maintained to be 6 to 8.
Further, the binder is one or more of attapulgite, kaolin and ceramic powder.
Further, the forming auxiliary agent is one or more of carboxymethyl cellulose, hydroxypropyl methyl cellulose, pregelatinized starch and sesbania powder.
Furthermore, the proportions of the catalyst powder, the binder, the forming aid and the water are respectively (1-5): 1-7): 0.005-0.01): 1-4.
The invention has the beneficial effects that:
according to the preparation method of the integral catalytic combustion CO catalyst provided by the embodiment of the invention, firstly, a coprecipitation method is adopted to prepare composite catalyst powder, then the composite catalyst powder and a binder are fully and uniformly mixed according to a certain proportion to obtain a mixture, water and a forming auxiliary agent are added into the mixture to be stirred to obtain mud, then the mud is subjected to mulling, ageing and extrusion forming to obtain a honeycomb blank body, the honeycomb blank body is dried and then roasted, and non-noble metal active components are introduced, so that the chlorine resistance and sulfur resistance of single noble metal are improved, and the catalytic activity is effectively improved.
In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.
Example 1
The embodiment of the invention provides a preparation method of an integral catalytic combustion CO catalyst, which comprises the following steps:
step S10: dissolving 2 parts of copper nitrate, 3 parts of cerium nitrate, 5 parts of manganese nitrate, 2 parts of zirconium nitrate and 0.05 part of chloroauric acid in 50 parts of deionized water to prepare a salt solution;
step S20: gradually adding a certain amount of citric acid under constant temperature condition, maintaining pH value at 7, and stirring at high speed for 3 hr to obtain a mixture;
step S30: transferring the mixture to a muffle furnace at 200 ℃ to ensure that the mixture is boiled, burned and decomposed to obtain a loose and porous gray black product, then heating to 350 ℃ and roasting for 3 hours, cooling and then crushing to 600 meshes to obtain composite catalyst powder;
step S40: fully and uniformly mixing 4 parts of catalyst powder and 6 parts of attapulgite to obtain a mixture;
step S50: adding 4 parts of water and 0.01 part of forming aid, and stirring at a high speed for 6 hours to obtain pug;
s60: after the pug is subjected to mulling and aging for 24 hours, the pug is extruded and molded by using a customized die to obtain a honeycomb blank;
s70: and drying the honeycomb blank body, and roasting at 500 ℃ for 4 hours to obtain the integral catalytic combustion CO catalyst.
Example 2
The embodiment of the invention provides a preparation method of an integral catalytic combustion CO catalyst, which comprises the following steps:
step S10: dissolving 1 part of copper nitrate, 2 parts of cerium nitrate, 5 parts of manganese nitrate, 3 parts of zirconium nitrate and 0.05 part of chloroauric acid in 50 parts of deionized water to prepare a salt solution;
step S20: gradually adding a certain amount of citric acid under constant temperature condition, maintaining pH value at 7.5, and stirring at high speed for 3 hr to obtain a mixture;
step S30: transferring the mixture to a muffle furnace at 200 ℃ to ensure that the mixture is boiled, burned and decomposed to obtain a loose and porous gray black product, then heating to 350 ℃ to roast for 3 hours, cooling and then crushing to 600 meshes to obtain composite catalyst powder;
step S40: fully and uniformly mixing 4 parts of catalyst powder and 6 parts of kaolin to obtain a mixture;
step S50: adding 4 parts of water and 0.01 part of forming aid, and stirring at a high speed for 6 hours to obtain pug;
step S60: after the pug is subjected to mulling and aging for 24 hours, the pug is extruded and molded by using a customized die to obtain a honeycomb blank;
step S70: and drying the honeycomb blank body, and roasting at 500 ℃ for 4: h to obtain the integral catalytic combustion CO catalyst.
Example 3
The embodiment of the invention provides a preparation method of an integral catalytic combustion CO catalyst, which comprises the following steps:
step S10: dissolving 2 parts of copper nitrate, 2 parts of cerium nitrate, 5 parts of manganese nitrate, 1 part of zirconium nitrate and 0.05 part of chloroauric acid in 50 parts of deionized water to prepare a salt solution;
step S20: gradually adding a certain amount of citric acid under constant temperature condition, maintaining pH value at 7, and stirring at high speed for 3 hr to obtain a mixture;
step S30: transferring the mixture to a muffle furnace at 200 ℃ to ensure that the mixture is boiled, burned and decomposed to obtain a loose and porous gray black product, heating to 350 ℃ to roast for 3 hours, cooling and then crushing to 600 meshes to obtain composite catalyst powder;
step S40: fully and uniformly mixing 4 parts of catalyst powder, 3 parts of kaolin and 3 parts of ceramic powder to obtain a mixture;
step S50: adding 4 parts of water and 0.01 part of forming aid, and stirring at a high speed for 6 hours to obtain pug;
step S60: after the pug is subjected to mulling and aging for 24 hours, the pug is extruded and molded by using a customized die to obtain a honeycomb blank;
step S70: and drying the honeycomb blank body, and roasting for 4 hours at 500 ℃ to obtain the integral catalytic combustion CO catalyst.
Evaluation examples
The monolithic catalytic combustion CO catalysts prepared in the above examples were subjected to activity tests. The catalysts were placed in fixed bed reactors, respectively, and their catalytic oxidation performance was tested. Wherein the raw material gas contains CO with the concentration of 5000mg/m3Air (test airspeed of 20000 h)-1The pressure is normal pressure.
The results of the activity tests carried out on the catalysts are shown in Table 1.
TABLE 1
| Catalyst and process for producing the same | T10 (reaction temperature with CO conversion 10%) | T98 (CO conversion 98% reaction temperature) |
| Example 1 | 107℃ | 162℃ |
| Example 2 | 125℃ | 189℃ |
| Example 3 | 113℃ | 175℃ |
As can be seen from the table above, the monolithic catalytic combustion CO catalyst has better chlorine resistance and sulfur resistance and higher catalytic activity.
In summary, according to the preparation method of the monolithic catalytic combustion CO catalyst provided in the embodiment of the present invention, firstly, a coprecipitation method is adopted to prepare a composite catalyst powder, then the composite catalyst powder and a binder are fully mixed in a certain proportion to obtain a mixture, water and a forming assistant are added into the mixture to be stirred to obtain a mud material, the mud material is subjected to mulling, aging and extrusion forming to obtain a honeycomb blank, the honeycomb blank is dried and then calcined, and a non-noble metal active component is introduced, so that the chlorine resistance and sulfur resistance of a single noble metal are improved, and thus the catalytic activity is effectively improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A preparation method of an integral catalytic combustion CO catalyst is characterized by comprising the following steps:
s10: dissolving copper salt, cerium salt, manganese salt, zirconium salt and gold salt in deionized water according to a certain proportion to prepare a solution with a certain concentration;
s20: gradually adding a certain amount of citric acid into the solution under the constant temperature condition, maintaining the pH value within a certain range and stirring for 3 hours to obtain a mixture;
s30: transferring the mixture to a muffle furnace at 200 ℃ to ensure that the mixture is boiled, burned and decomposed to obtain a loose and porous gray black product, then heating to 350 ℃ and roasting for 3 hours, cooling and then crushing to 600 meshes to obtain composite catalyst powder;
s40: fully and uniformly mixing the composite catalyst powder and a binder according to a certain proportion to obtain a mixture;
s50: adding water and a forming aid into the mixture and stirring for 6 hours to obtain pug;
s60: after the pug is kneaded and aged for 24 hours, the pug is extruded and molded by a customized die to obtain a honeycomb blank;
s70: and drying the honeycomb blank body, and roasting at 500 ℃ for 4 hours to obtain the integral catalytic combustion CO catalyst.
2. The method for preparing the monolithic catalyst for catalytic combustion of CO according to claim 1, wherein the copper salt, cerium salt, manganese salt, zirconium salt and gold salt are respectively copper nitrate, cerium nitrate, manganese nitrate, zirconium nitrate and chloroauric acid, and the molar ratio is (1-2): (1-5): (1-5):(1-3):(0.01-0.05).
3. The method of claim 1, wherein the citric acid is used in an amount of 1.1 to 1.3 times the molar amount of the metal ions and the pH is maintained at 6 to 8.
4. The method of claim 1, wherein the binder is one or more of attapulgite, kaolin, and ceramic powder.
5. The method for preparing the monolithic catalyst for catalytic combustion of CO as claimed in claim 1, wherein the forming aid is one or more of carboxymethyl cellulose, hydroxypropyl methyl cellulose, pregelatinized starch, sesbania powder.
6. The method for preparing the CO catalyst for integral catalytic combustion as claimed in claim 1, wherein the ratio of the catalyst powder, the binder, the forming aid and the water is (1-5) to (1-7) to (0.005-0.01) to (1-4), respectively.
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| CN115007166A (en) * | 2022-06-23 | 2022-09-06 | 山东亮剑环保新材料有限公司 | Preparation method of granular CO catalyst for catalytic combustion |
| CN115837276A (en) * | 2022-12-14 | 2023-03-24 | 山东亮剑环保新材料有限公司 | Preparation method of honeycomb-shaped catalyst for catalytic oxidation of carbon monoxide |
| CN117720954A (en) * | 2024-01-25 | 2024-03-19 | 青岛康洁聚能科技有限公司 | Non-noble metal carbon monoxide combustion improver and preparation method thereof |
| CN117720954B (en) * | 2024-01-25 | 2024-05-28 | 青岛康洁聚能科技有限公司 | Non-noble metal carbon monoxide combustion improver and preparation method thereof |
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