CN115155632A - Preparation method of hydrogen chloride oxidation catalyst - Google Patents
Preparation method of hydrogen chloride oxidation catalyst Download PDFInfo
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- CN115155632A CN115155632A CN202210728337.9A CN202210728337A CN115155632A CN 115155632 A CN115155632 A CN 115155632A CN 202210728337 A CN202210728337 A CN 202210728337A CN 115155632 A CN115155632 A CN 115155632A
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- hydrogen chloride
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- chloride oxidation
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- 239000003054 catalyst Substances 0.000 title claims abstract description 48
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 42
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910000041 hydrogen chloride Inorganic materials 0.000 title claims abstract description 41
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 32
- 230000003647 oxidation Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 12
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 238000011068 loading method Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000012798 spherical particle Substances 0.000 claims description 2
- 238000012546 transfer Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 10
- 239000000460 chlorine Substances 0.000 description 10
- 229910052801 chlorine Inorganic materials 0.000 description 10
- 230000003197 catalytic effect Effects 0.000 description 9
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 8
- 229910052707 ruthenium Inorganic materials 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Substances [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 230000010718 Oxidation Activity Effects 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000002479 acid--base titration Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 201000006549 dyspepsia Diseases 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004753 textile 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
- B01J27/22—Carbides
- B01J27/224—Silicon carbide
-
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
- C01B7/03—Preparation from chlorides
- C01B7/04—Preparation of chlorine from hydrogen chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a preparation method of a hydrogen chloride oxidation catalyst. The disclosed method comprises reacting TiO 2 Uniformly spraying the slurry on a granular substrate to obtain an initial carrier, and drying the initial carrier at 60-120 ℃ to obtain a composite carrier, wherein the TiO is 2 TiO in the slurry 2 The mass ratio of the powder to the water is 1.7-1.8, and the mass ratio of the TiO to the water is (1) 2 The mass ratio of the powder to the substrate is 1; the heat conductivity coefficient of the substrate material is more than or equal to 10 W.m at 327 DEG C ‑1 ·K ‑1 (ii) a Then loading the Ru element and the assistant metal element on the composite carrier and then roasting to obtain the hydrogen chloride oxidation catalyst. The invention adopts the composite carrier with high thermal conductivity, improves the heat transfer efficiency of the hydrogen chloride oxidation catalyst, obviously improves the stability of the catalyst and prolongs the service life of the catalyst.
Description
Technical Field
The invention belongs to the field of catalyst preparation, and particularly relates to a preparation method of a high-efficiency heat transfer hydrogen chloride oxidation catalyst.
Background
In the field of chemical industry, chlorine and hydrogen chloride are important industrial products and raw materials, and over 50% of chemical processes involve chlorine, and cover various industries such as polyurethane, fluorine chemical, chlor-alkali, pesticide, textile, cosmetics and the like. Among these, the large-scale industrial production uses chlorine as an important raw material, but hydrogen chloride as a large by-product at the end of the process. The byproduct hydrogen chloride has the problems of difficult storage, difficult treatment and difficult digestion. Nowadays, the efficient utilization of hydrogen chloride as a resource has become a common problem to be solved urgently in the chlorine industry. The chlorine hydride is converted into chlorine again, so that the problem of treatment and discharge caused by a large amount of hydrogen chloride byproducts can be solved, the basic requirements of green chemistry and circular economy are met, the closed cycle of chlorine resources is favorably realized, and the sustainable development of chlorine-related industries is promoted. The catalytic oxidation method provides an effective way with low energy consumption and sustainable development for preparing chlorine by circulating hydrogen chloride.
The catalytic oxidation method has been developed for over 150 years, the ruthenium-based catalyst is concerned due to high catalytic oxidation activity of hydrogen chloride, and particularly when titanium dioxide is used as a carrier, the ruthenium active phase and the beneficial interaction generated by the ruthenium active phase greatly improve the catalytic oxidation activity of the hydrogen chloride of the ruthenium-based catalyst. However, the current ruthenium-based catalysts still have some problems to be optimized. Since the hydrogen chloride oxidation reaction is an exothermic process as a whole, the conversion of each mole of hydrogen chloride molecule generates 28.5kJ of heat, the thermal effect of which is not negligible in actual industrial production. The heat generated during the hydrogen chloride oxidation process often adversely affects various hydrogen chloride oxidation catalysts, including ruthenium-based catalysts. Due to untimely heat transfer, the formation of local hot spots can lead to sintering deactivation and even volatilization loss of active components. During the long-term continuous reaction, the adverse effects caused by the thermal effects of the reaction will be amplified continuously, resulting in a continuous decrease in catalytic activity.
The fluidized bed reactor has a heat transfer effect superior to that of a fixed bed reactor, and can take away heat in time. However, the fluidized bed process has problems of back mixing, abrasion of catalyst particles, difficulty in controlling the operation of equipment, etc., and continuous operation is difficult in actual operation, and the catalyst is liable to be sintered to cause clogging. In contrast, fixed bed processes have easier operational control while allowing smoother continuous operation, and even relatively long catalyst life, but the catalyst has reduced stability due to poor heat removal.
Disclosure of Invention
Aiming at the defects or shortcomings of the prior art, the invention provides a preparation method of a hydrogen chloride oxidation catalyst.
Therefore, the preparation method of the hydrogen chloride oxidation catalyst provided by the invention comprises the following steps:
(1) Adding TiO into the mixture 2 Uniformly spraying the slurry on a granular substrate to obtain an initial carrier, and drying the initial carrier at 60-120 ℃ to obtain a composite carrier, wherein TiO 2 TiO in the slurry 2 The mass ratio of the powder to the water is 1.7-1.8, and the mass ratio of TiO 2 The mass ratio of the powder to the substrate is 1; the heat conductivity coefficient of the substrate material is more than or equal to 10 W.m at 327 DEG C -1 ·K -1 ；
(2) And loading the Ru element and the auxiliary agent metal element on the composite carrier to obtain the hydrogen chloride oxidation catalyst.
Optionally, the TiO 2 The particle size of the powder is 20-80 nm.
Optionally, the substrate is a SiC substrate, a BN substrate and alpha-Al 2 O 3 One or more than two of the substratesAnd (4) mixing.
Optionally, the substrate is a mixture of one or more of spherical particles, cylindrical particles, cake-shaped particles, mesh-shaped particles, annular particles, cross-shaped particles, and rice-shaped particles.
Optionally, the drying time is 8-24 h.
Optionally, the auxiliary metal element is one or more of Cr, si, ce, al, cu, ni, co, re, and Ir.
Optionally, the loading method is impregnation method or alkaline precipitation method.
The invention adopts the composite carrier with high thermal conductivity, improves the heat transfer efficiency of the hydrogen chloride oxidation catalyst, obviously improves the stability of the catalyst and prolongs the service life of the catalyst; in addition, the composite carrier with the core-shell structure is adopted, and the beneficial interaction of the ruthenium-based catalyst and the titanium dioxide carrier and the excellent heat transfer effect provided by the high-thermal-conductivity substrate are both considered.
Detailed Description
Unless otherwise specified, the terminology herein is to be understood in light of the knowledge of one of ordinary skill in the relevant art.
The invention adopts a strategy of constructing the composite carrier, and greatly improves the heat transfer efficiency of the hydrogen chloride oxidation catalyst from the heat transfer property of the catalyst, thereby improving the stability of the hydrogen chloride oxidation catalyst. The composite carrier is of a core-shell structure, and a high-thermal-conductivity granular substrate is selected, and on one hand, the high-thermal-conductivity granular substrate has strong resistance to corrosion of hydrogen chloride and chlorine under the condition of catalytic oxidation reaction of the hydrogen chloride, namely acid resistance and oxidation resistance, and can bear stress corrosion of chloride ions; on the other hand, the material has higher thermal conductivity. For example, a substrate can be selected from the group consisting of silicon carbide having a thermal conductivity of 33.8 W.m at 327 ℃ in the presence of 33.8@327 ℃ -1 ·K -1 )：
Using SiC, BN, alpha-Al 2 O 3 High thermal conductivity material as compositeThe components of the carrier effectively promote the heat transfer of the catalyst bed, thereby reducing the possibility of generating local hot spots and prolonging the service life of the catalyst. The particle size of the granular substrate can be selected from, but is not limited to, the particle size of related carriers in the existing chemical industry field, fermentation field or catalyst field, such as 1mm-10mm.
On the basis of the scheme of the invention, the skilled person can optimize and select the conditions related to the method of the invention, including but not limited to the proportion of related substances, the heat conductivity coefficient of the matrix, the drying temperature and time, the auxiliary agent elements, the loading method and the like, so as to realize the effect of the invention; the loading and roasting can adopt the loading and roasting means in the existing hydrogen chloride oxidation catalyst preparation method and the optimized loading and roasting means on the basis of the prior art. The present invention is further illustrated by the following examples, but is not limited thereto.
Example 1:
13.23g of solid TiO 2 (40-60 nm) is slowly added into 15.0ml of deionized water and fully stirred into slurry; then adding TiO 2 The slurry is uniformly sprayed on 108.0g of Raschig annular SiC (phi 5 multiplied by 5mm, annular wall thickness 1 mm); drying the mixture at 80 deg.C for 18h; obtaining a carrier A;
2.46g of RuCl 3 ·3H 2 O and 2.33g Ce (NO) 3 ) 3 ·6H 2 Dissolving O in 50mL of ethanol water solution with the mass fraction of 45%; then 38.6g of the carrier A is added, and after uniform stirring, standing and dipping are carried out for 16h; and drying the obtained material at 100 ℃ for 5h, and then roasting at 350 ℃ for 8h to obtain the hydrogen chloride oxidation catalyst A.
Example 2:
18.58g of solid TiO 2 (50-70 nm) is slowly added into 24.0ml of deionized water and fully stirred into slurry; then adding TiO 2 The slurry was uniformly sprayed onto 156.0g of cylindrical BN (phi 3X 3 mm); drying the mixture at 120 deg.C for 8 hr; obtaining a carrier B;
3.60g of RuCl 3 ·3H 2 Dissolving O and 4.11g of tetraethoxysilane into 60mL of ethanol water solution with the mass fraction of 45%; then add into75.8g of the carrier B, stirring uniformly, standing and soaking for 16h; and drying the obtained material at 100 ℃ for 5h, and then roasting at 350 ℃ for 8h to obtain the hydrogen chloride oxidation catalyst B.
Comparative example 1:
2.46g of RuCl 3 ·3H 2 O and 2.33g Ce (NO) 3 ) 3 ·6H 2 Dissolving O in 50mL of ethanol water solution with the mass fraction of 45%; then 38.6g of Raschig ring carrier TiO is added 2 (phi 5X 5mm, ring wall thickness 1mm, solid TiO 40-60 nm 2 Pressing), stirring uniformly, standing and soaking for 16h; and drying the obtained material at 100 ℃ for 5h, and then roasting at 350 ℃ for 8h to obtain the hydrogen chloride oxidation catalyst C.
Comparative example 2:
3.60g of RuCl 3 ·3H 2 Dissolving O and 4.11g of tetraethoxysilane into 60mL of ethanol water solution with the mass fraction of 45%; then 75.8g of cylindrical TiO are added 2 (phi 3X 3mm, solid TiO 50-70 nm) 2 Pressing), stirring uniformly, standing and soaking for 16h; and drying the obtained material at 100 ℃ for 5 hours, and then roasting the dried material at 350 ℃ for 8 hours to obtain the hydrogen chloride oxidation catalyst D.
The catalysts obtained in the above examples and comparative examples were evaluated by a fixed bed reactor under the above high space velocity reaction conditions, and the catalytic oxidation performance of hydrogen chloride was as shown in table 1 below.
The catalyst evaluation was carried out using a fixed bed reactor having dimensions of 500 mm. Times. Phi.20 mm. Times.3 mm. The reaction is carried out under normal pressure, 5.0 +/-0.2 g of catalyst is filled, hydrogen chloride gas and oxygen are used as reaction gases, and the reaction gases firstly pass through a mass flow meter and then enter a fixed bed reactor after passing through a preheater; the reactor adopts an electric heating mode to carry out three-stage heating, the reaction temperature is 350 ℃, the flow rate of the hydrogen chloride is 450ml/min, the flow rate of the oxygen is 800ml/min, namely the reaction space velocity is 15000L/(kg) cat H), sampling and analyzing after the reaction is stable for 1h, and titrating chlorine and incompletely reacted hydrogen chloride in the sample by an iodometry method and an acid-base titration method respectively;
the specific operation steps are as follows: after the system is stably operated, preparing 100mL of 20% KI solution at regular intervals, switching an outlet three-way valve of an oxidation reactor, introducing the mixed gas after reaction into a constant volume (100 mL) potassium iodide solution, absorbing for 2 minutes, transferring the absorbing solution into a conical flask after absorption, titrating by using 0.1mol/L sodium thiosulfate standard solution, and using starch as an indicator; then, unreacted HC1 was titrated with 0.1mol/L sodium hydroxide standard solution using phenolphthalein as an indicator.
TABLE 1
From the table above, it can be seen that the catalytic stability of the hydrogen chloride oxidation catalyst A, B obtained by the preparation method of the present invention is higher than that of the catalyst C, D prepared by the conventional method, and the high thermal conductivity composite carrier plays a significant gain role in the performance, especially the stability, of the supported ruthenium-based catalyst. At high airspeed of 15000L/(kg) cat H), the catalytic activity is not substantially reduced by using the catalyst of the invention to continuously react for 200 h.
Claims (7)
1. A method for preparing a hydrogen chloride oxidation catalyst, comprising:
(1) Adding TiO into the mixture 2 Uniformly spraying the slurry on a granular substrate to obtain an initial carrier, and drying the initial carrier at 60-120 ℃ to obtain a composite carrier, wherein TiO 2 TiO in the slurry 2 The mass ratio of the powder to the water is 1.7-1.8, and the mass ratio of TiO 2 The mass ratio of the powder to the substrate is 1; the heat conductivity coefficient of the substrate material is more than or equal to 10 W.m at 327 DEG C -1 ·K -1 ；
(2) And loading the Ru element and the auxiliary agent metal element on the composite carrier and then roasting to obtain the hydrogen chloride oxidation catalyst.
2. The method for preparing a hydrogen chloride oxidation catalyst according to claim 1, wherein the TiO is TiO 2 The particle size of the powder is 20-80 nm.
3. As claimed in claim 1The preparation method of the hydrogen chloride oxidation catalyst is characterized in that the substrate is a SiC substrate, a BN substrate and alpha-Al 2 O 3 One or a mixture of two or more of the substrates.
4. The method of claim 1, wherein the substrate is a mixture of one or more of spherical particles, cylindrical particles, cake-like particles, mesh-like particles, annular particles, cross-like particles, and rice-like particles.
5. The method for preparing a hydrogen chloride oxidation catalyst according to claim 1, wherein the drying time is 8 to 24 hours.
6. The method of claim 1, wherein the promoter metal element is one or more of Cr, si, ce, al, cu, ni, co, re, and Ir.
7. The method of claim 1, wherein the loading is by impregnation or alkaline precipitation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899558A (en) * | 2023-05-22 | 2023-10-20 | 康纳新型材料(杭州)有限公司 | High-heat-conductivity ruthenium catalyst with thermal stability and preparation method thereof |
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| CN113996291A (en) * | 2021-11-09 | 2022-02-01 | 康纳新型材料(杭州)有限公司 | Low-temperature HVOCs catalytic combustion catalyst, and preparation method and application thereof |
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- 2022-06-24 CN CN202210728337.9A patent/CN115155632B/en active Active
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| JPH10338502A (en) * | 1996-10-31 | 1998-12-22 | Sumitomo Chem Co Ltd | Production of chlorine |
| CN101489919A (en) * | 2006-05-23 | 2009-07-22 | 拜尔材料科学股份公司 | Method for producing chlorine by gas phase oxidation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116899558A (en) * | 2023-05-22 | 2023-10-20 | 康纳新型材料(杭州)有限公司 | High-heat-conductivity ruthenium catalyst with thermal stability and preparation method thereof |
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