CN114029056A - Volatile organic compound treatment catalyst, preparation method and application thereof - Google Patents
Volatile organic compound treatment catalyst, preparation method and application thereof Download PDFInfo
- Publication number
- CN114029056A CN114029056A CN202111602286.7A CN202111602286A CN114029056A CN 114029056 A CN114029056 A CN 114029056A CN 202111602286 A CN202111602286 A CN 202111602286A CN 114029056 A CN114029056 A CN 114029056A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- slurry
- volatile organic
- honeycomb ceramic
- oxide
- 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 62
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 73
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000002243 precursor Substances 0.000 claims abstract description 34
- 238000000576 coating method Methods 0.000 claims abstract description 32
- 239000000919 ceramic Substances 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 31
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 28
- 238000000498 ball milling Methods 0.000 claims abstract description 27
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000002105 nanoparticle Substances 0.000 claims abstract description 20
- 238000011065 in-situ storage Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 14
- 239000011591 potassium Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000002500 ions Chemical class 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 239000000243 solution Substances 0.000 claims description 23
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 14
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000012298 atmosphere Substances 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 7
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical class 0.000 claims description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 5
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 229910052684 Cerium Inorganic materials 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 238000005067 remediation Methods 0.000 claims 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract description 24
- 238000001354 calcination Methods 0.000 abstract description 12
- 238000006555 catalytic reaction Methods 0.000 abstract description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 238000005516 engineering process Methods 0.000 description 14
- 239000000377 silicon dioxide Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000012018 catalyst precursor Substances 0.000 description 7
- 238000007084 catalytic combustion reaction Methods 0.000 description 7
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 6
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000011068 loading method Methods 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 239000006255 coating slurry Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000003837 high-temperature calcination Methods 0.000 description 2
- 238000009766 low-temperature sintering Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 description 2
- 239000012279 sodium borohydride Substances 0.000 description 2
- 102100021935 C-C motif chemokine 26 Human genes 0.000 description 1
- 229910004625 Ce—Zr Inorganic materials 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 101000897493 Homo sapiens C-C motif chemokine 26 Proteins 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- RCFVMJKOEJFGTM-UHFFFAOYSA-N cerium zirconium Chemical compound [Zr].[Ce] RCFVMJKOEJFGTM-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000002896 organic halogen compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- -1 platinum group metals Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
-
- 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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- 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
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/63—Platinum group metals with rare earths or actinides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a volatile organic compound treatment catalyst, a preparation method and application thereof, and relates to the technical field of volatile organic compound catalysis. The method comprises the following steps of taking cordierite honeycomb ceramic as a coating carrier, wherein the precursors sequentially comprise: adding noble metal ion liquid into the precursor slurry A formed by ball milling and stirring to form precursor slurry B so as to generate precursor slurry C of noble metal active site nano particles in situ; the calcination temperature of the cordierite honeycomb ceramic coated with the catalyst is 150-230 ℃, and the metal ball-milling liquid containing zirconia is prepared in the preparation process; adding platinum tetraammine nitrate; adding a potassium borohydride solution; cordierite honeycomb ceramic is used as a coating carrier, coated with the in-situ solution with the noble metal active site nano particles, and calcined at the temperature of between 150 and 230 ℃. The cordierite honeycomb ceramic coated with the metal active site nano particles is calcined at low temperature and is used as a catalyst for the treatment of low-ignition-temperature VOC.
Description
Technical Field
The invention belongs to the technical field of volatile organic compound catalysis, and particularly relates to a volatile organic compound treatment catalyst, a preparation method and application thereof.
Background
Along with the industrial production of ChinaThe production level is continuously improved, and the environmental pollution problem is increasingly serious. The exhaust gas of volatile organic compounds is a general name of organic compounds, and has extremely strong volatility, and automobile exhaust, heavy metal smelting, automobile body coating, various house coatings and the like are all sources of the volatile organic compounds, and pollutants of the volatile organic compounds have great influence on the environment, and if the concentration of the volatile organic compounds in the air is high, the volatile organic compounds can threaten the life safety of people. The volatile organic compounds are PM2.5, PM10 and O3The volatile organic compound is oxidized, adsorbed, condensed, etc. with oxidant (-OH, NO) in air3-、O3) The reaction takes place to produce secondary organic particulate matter, which comprises what is known as PM2.5 and PM 10. Meanwhile, when the volatile organic compound reacts with the nitrogen oxide by illumination, ozone and photochemical smog are produced.
At present, China is in a large-scale volatile organic compound treatment and emission reduction stage, and various tail end treatment technologies are continuously developed, such as: adsorption recovery technology, adsorption concentration technology, incineration technology, catalytic combustion technology, biotechnology, various combined purification technologies and the like. Wherein, the traditional technologies such as adsorption technology, catalytic combustion technology and incineration technology are still the mainstream technologies for volatile organic compound treatment at present. The catalytic combustion technology can be used for pertinently treating volatile organic compounds which do not need to be recovered, so that toxic and harmful components are effectively removed, and oxygen and the volatile organic compounds can generate chemical reaction to generate carbon dioxide and water under the action of the catalyst. The catalytic combustion technology is a preferred technology for treating volatile organic compound pollution in many industries due to low oxidation temperature and low operation cost.
In the method for preparing catalyst by using cordierite honeycomb ceramic as carrier, CN 102000570A-a Pd/Ceo.sZro.202/cordierite honeycomb ceramic monolithic catalyst is used to prepare Ce-Zr compound, Ce (NO) by impregnation method3)36H2O with Zr (NO)3)4·5H2And (3) soaking O into the cordierite honeycomb ceramic carrier, then roasting in a muffle furnace at 400 ℃ for 1h, and repeating the process for 2 times. The above process can make cerium zirconium coatThe specific surface area of the layer shrinks.
CN103191735B, a preparation method of a lean-burn natural gas vehicle catalyst, aiming at the condition that the ignition temperature of an organic matter is 200 ℃, drying a cordierite honeycomb ceramic carrier subjected to sizing in a contrast patent for 2-6h, and then roasting at the temperature of 450-600 ℃ for 2-4 h; the cordierite honeycomb ceramic carrier after being dipped with the noble metal solution is dried for 2-6h and is roasted for 2-4h at the temperature of 450-600 ℃, thus having high energy consumption.
In addition, the mainstream voc catalytic oxidation catalysts are mostly noble metal (such as platinum, palladium, ruthenium, etc.) catalysts, and patent CN102481549B discloses an oxidation catalyst deposited on a substrate for destroying CO and volatile organic compounds, especially halogenated organic compounds, in an effluent stream at a temperature of 250 ℃ to 450 ℃. The oxidation catalyst comprises at least two platinum group metals, one of which is platinum or ruthenium, supported on refractory oxides such as a solid solution of CeO2 and ZrO2, and tin oxide and/or silica. Patent CN104138756A discloses a supported mesoporous carbon catalyst RTCC-1 for low-temperature catalytic combustion of volatile organic compounds (volatile organic compounds) and a preparation method thereof. The TSC-1 mesoporous carbon material with unique physicochemical properties is used as a carrier of the catalyst, so that the disadvantages of high active metal loading and high cost of the traditional catalytic combustion catalyst are eliminated. The active component of the load type low-temperature catalytic combustion catalyst prepared by the carrier is one of Pd or Pt noble metals combined with one or more oxides of copper oxide, cerium oxide, zirconium oxide, silicon oxide and aluminum oxide. In patent CN105688657B, a method of oxidizing carbon monoxide and volatile organic compounds is disclosed, comprising contacting a gas containing water vapor and said carbon oxides and volatile organic compounds with a catalyst composition containing at least one common metal promoter and at least one common metal catalyst supported on an oxide support material comprising one or more of alumina, silica, zirconia, ceria and titania. The volatile organic compound treatment catalyst in the patent needs calcination at least above 500 ℃ in the preparation process, which inevitably causes agglomeration and sintering of noble metal active sites, carrier shrinkage and specific surface area reduction.
Disclosure of Invention
The invention aims to provide a volatile organic compound treatment catalyst, a preparation method and application thereof.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a volatile organic compound treatment catalyst, which comprises cordierite honeycomb ceramic as a coating carrier and is characterized in that: the precursor is as follows in sequence: adding noble metal ion liquid into the precursor slurry A formed by ball milling and stirring to form precursor slurry B so as to generate precursor slurry C of noble metal active site nano particles in situ;
the precursor slurry A uses metal oxidation as a grinding material, and the sintering temperature of the cordierite honeycomb ceramic coated with the catalyst is 150-230 ℃.
Further, the precursor slurry a includes zirconium oxide, and the precursor slurry a further includes at least one of cerium oxide, aluminum oxide, and lanthanum oxide.
Further, adding a potassium borohydride solution into the precursor slurry C under the protection of nitrogen, wherein the molar ratio of potassium borohydride to platinum is 7.5: 1.
further, the mesh number of the cordierite honeycomb ceramic is 300 meshes.
A method for preparing a volatile organic compound abatement catalyst, comprising:
preparing a metal ball milling liquid at least containing zirconium oxide;
adding platinum tetraammine nitrate to obtain ionic platinum slurry;
under the protection of nitrogen, adding a potassium borohydride solution, and carrying out in-situ preparation of metal active site nanoparticles by platinum on an oxide carrier;
cordierite honeycomb ceramic is used as a coating carrier to coat the in-situ solution with the noble metal active site nano particles, and the solution is dried and calcined at the temperature of between 150 and 230 ℃.
Further, the metal ball milling liquid is added with at least one of cerium oxide, aluminum oxide, lanthanum oxide or silicon oxide before ball milling.
Further, grinding the metal ball-milling liquid, namely adding a silica sol solution, polyvinyl pyrrolidone, carboxymethyl cellulose and a styrene butadiene rubber solution on the metal oxide, and then grinding, wherein the temperature of the solution is controlled to be between 20 and 40 ℃ during grinding.
Further, the total mass of the metal oxide or the sum of the metal oxide and the silicon oxide is not more than 3% by mass of platinum.
Further, the molar ratio of potassium borohydride to metal platinum is 7.5: 1.
further, the in-situ solution of the noble metal active site nanoparticles is coated on cordierite honeycomb ceramics with the length, width and height of 10cm x 10cm, the coating amount is 100g of slurry/L, the obtained sample is dried to constant weight at 80 ℃, and is calcined for 2 hours at 200 ℃ in the air atmosphere.
The application of the catalyst for treating volatile organic compounds is to use the cordierite honeycomb ceramic monolithic catalyst for catalytic treatment of volatile organic pollutants at the temperature of not higher than 100 ℃.
The invention has the following beneficial effects:
in the invention, the noble metal active site nano particles are loaded on the surface of a cordierite honeycomb ceramic carrier in a carrier and auxiliary agent slurry in situ and then are loaded on the surface of the cordierite honeycomb ceramic carrier in a coating mode, and the volatile organic compound treatment catalyst with low ignition temperature is obtained after low-temperature calcination. The invention aims to overcome the defects in the prior art and provides a volatile organic compound treatment catalyst, a preparation method and application thereof, and compared with other preparation methods of volatile organic compound treatment catalysts, the method has the remarkable advantages that: the noble metal active site nano particles are loaded in situ in the carrier and the auxiliary agent, high-temperature calcination is not needed, and the problems of noble metal active sintering agglomeration and carrier specific surface area shrinkage are solved; the catalytic oxidation ignition temperature of the volatile organic compound is low, so that excessive energy consumption is avoided; the catalyst has simple preparation method and is easy to be produced in a large scale.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a volatile organic compound treatment catalyst, which comprises the following components in part by weight: cordierite honeycomb ceramic is used as a coating carrier, and the precursors sequentially comprise: the method comprises the steps of forming a precursor slurry A through ball milling, forming a precursor slurry B after stirring, generating a precursor slurry C with precious metal active site nano particles in situ, wherein the precious metal is platinum, adding platinum nitrate into the precursor slurry A after ball milling, fully stirring to obtain a precursor slurry B, adding 3mol/L potassium borohydride solution into the precursor slurry B under the protection of nitrogen, obtaining the precursor slurry C after fully stirring, coating the precursor slurry C on cordierite honeycomb ceramic, drying to constant weight, calcining for 2 hours at 190 ℃ in the air atmosphere, and obtaining a volatile organic compound treatment catalyst, wherein the platinum in the precursor slurry B still exists in an ionic state, and other soluble substances are dissolved, the oxide exists in a suspended state, and in the precursor slurry C, platinum is loaded on the oxide carrier in a reduced state of nano particles.
The low-temperature sintering characteristic of the zirconia powder is utilized, and the ball milling is more prominent when the zirconia powder is in a nanometer state. In addition, the low-temperature sintering performance of the nano-grade zirconia is promoted by the matching of the binder in the formula, and the specific binder is selected from the following examples.
A volatile organic compound control catalyst was prepared according to the above method, and specific preparation methods given below are example 1, example 2, and example 3, respectively.
Example 1:
(1) preparing catalyst precursor slurry: 20 parts of zirconium oxide (D50 ═ 40 μm), 55 parts of aluminum oxide (D50 ═ 55 μm), 25 parts of lanthanum oxide (D50 ═ 40 μm) and 0.3 part of silica sol solution (silica sol content 10%, silica particle size in silica sol 20-60nm), 0.1 part of polyvinyl pyrrolidone (molecular weight 55000), 0.1 part of carboxymethyl cellulose and 0.1 part of styrene-butadiene rubber solution (styrene-butadiene rubber content 50%) were stirred in a stirrer with water as solvent for 30 minutes at a stirring speed of 300rpm, with the solid content being controlled at 40%. And transferring the slurry into a ball mill after stirring is finished, carrying out wet ball milling to obtain slurry A, wherein the rotating speed of the ball mill is 200 r/min, the ball milling time is 2 hours, a water-cooling jacket is arranged on the outer layer of a ball milling tank, and the temperature of the slurry is kept at 30 ℃. The parts ratio is mass ratio.
Adding chloroplatinic acid with a certain mass into the slurry A, controlling the total mass ratio of platinum to zirconia, alumina and lanthanum oxide to be 0.1%, and stirring at 300rpm for 2 hours to obtain a catalyst precursor slurry B, wherein the reaction temperature is normal temperature.
(2) In-situ generation of noble metal active site nanoparticles: under the protection of nitrogen, adding 2mol/L sodium borohydride solution into the precursor slurry B, stirring at 300rpm for 2 hours to obtain a catalyst slurry C, wherein the reaction temperature is normal temperature, and the molar ratio of the sodium borohydride to the metal platinum is 5: 1.
(3) coating active slurry and calcining at low temperature: cordierite honeycomb ceramic (mesh number is 300 meshes) with length, width and height of 10cm x 10cm is used as a coating carrier, a loading device is a lower feeding automatic coating machine, coating slurry C is coated, the coating amount is controlled to be 100g slurry/L, a sample is obtained, the sample is dried to constant weight at 80 ℃, and is calcined for 2 hours at 200 ℃ in the air atmosphere, and the volatile organic compound treatment catalyst is obtained.
Example 2:
(1) preparing catalyst precursor slurry: 35 parts of zirconia (D50 ═ 40 μm), 50 parts of silica (D50 ═ 50 μm), 15 parts of ceria (D50 ═ 40 μm), and 0.3 part of a silica sol solution (silica sol content 10%, silica particle size in silica sol 20 to 60nm), 0.1 part of polyvinyl pyrrolidone (molecular weight 55000), 0.1 part of carboxymethyl cellulose, and 0.1 part of a styrene-butadiene rubber solution (styrene-butadiene rubber content 50%) were stirred in a stirrer with water as a solvent for 30 minutes at a stirring speed of 300rpm with a solid content of 45% being controlled. And transferring the slurry into a ball mill after stirring is finished, carrying out wet ball milling to obtain slurry A, wherein the rotating speed of the ball mill is 200 r/min, the ball milling time is 2 hours, a water-cooling jacket is arranged on the outer layer of a ball milling tank, and the temperature of the slurry is kept at 30 ℃. The parts ratio is mass ratio.
Adding a certain mass of platinum nitrate into the slurry A, controlling the total mass ratio of platinum to zirconia, silica and ceria to be 0.2%, and stirring at 300rpm for 2 hours to obtain a catalyst precursor slurry B, wherein the reaction temperature is normal temperature.
(2) In-situ generation of noble metal active site nanoparticles: under the protection of nitrogen, adding 3mol/L potassium borohydride solution into the precursor slurry B, stirring at 300rpm for 2 hours to obtain a catalyst slurry C, wherein the reaction temperature is normal temperature, and the molar ratio of potassium borohydride to metal platinum is 7.5: 1.
(3) coating active slurry and calcining at low temperature: cordierite honeycomb ceramic (mesh number is 300 meshes) with length, width and height of 10cm by 10cm is used as a coating carrier, a loading device is a lower feeding automatic coating machine, coating slurry C is coated, the coating amount is controlled to be 120g slurry/L, a sample is obtained, the sample is dried to constant weight at 80 ℃, and calcination is carried out for 2 hours at 190 ℃ in the air atmosphere, so that the volatile organic compound treatment catalyst is obtained.
Example 3:
(1) preparing catalyst precursor slurry: 50 parts of zirconia (D50 ═ 40 μm), 22.5 parts of silica (D50 ═ 50 μm), 22.5 parts of alumina (D50 ═ 55 μm), 2.5 parts of ceria (D50 ═ 40 μm), 2.5 parts of lanthanum trioxide (D50 ═ 40 μm), and 0.3 part of a silica sol solution (silica sol content 10%, silica particle size in silica sol 20 to 60nm), 0.1 part of polyvinyl pyrrolidone (molecular weight 55000), 0.1 part of carboxymethyl cellulose, and 0.1 part of a styrene-butadiene rubber solution (styrene-butadiene rubber content 50%) were stirred in a stirrer with water as a solvent for 30 minutes at a stirring speed of 300rpm, with the solid content controlled at 50%. And transferring the slurry into a ball mill after stirring is finished, carrying out wet ball milling to obtain slurry A, wherein the rotating speed of the ball mill is 200 r/min, the ball milling time is 2 hours, a water-cooling jacket is arranged on the outer layer of a ball milling tank, and the temperature of the slurry is kept at 30 ℃. The parts ratio is mass ratio.
Adding a certain mass of platinum tetraammine nitrate into the slurry A, controlling the total mass ratio of platinum to zirconia, silica, alumina, ceria and lanthanum oxide to be 0.3%, stirring at 300rpm for 2 hours to obtain a catalyst precursor slurry B, and then, reacting at normal temperature.
(2) In-situ generation of noble metal active site nanoparticles: and under the protection of nitrogen, adding 4mol/L potassium borohydride solution into the precursor slurry B, and stirring at 300rpm for 2 hours to obtain catalyst slurry C, wherein the reaction temperature is normal temperature, and the molar ratio of potassium borohydride to metal platinum is 10: 1.
(3) Coating active slurry and calcining at low temperature: cordierite honeycomb ceramic (mesh number is 300 meshes) with length, width and height of 10cm by 10cm is used as a coating carrier, a loading device is a lower feeding automatic coating machine, coating slurry C is coated, the coating amount is controlled to be 140g slurry/L, a sample is obtained, the sample is dried to constant weight at 80 ℃, and calcination is carried out for 2 hours at 180 ℃ in the air atmosphere, so that the volatile organic compound treatment catalyst is obtained.
All examples showed comparable activity below 140 ℃. Above 140 ℃, the activity gradually generates difference, the activity sequence is that example 3 is greater than example 2 is greater than example 1, the platinum content in the slurry is gradually increased, and the coating amount of the slurry on the cordierite honeycomb ceramic carrier is also gradually increased.
Comparative example:
(1) preparing catalyst slurry: 20 parts of zirconium oxide (D50 ═ 40 μm), 55 parts of aluminum oxide (D50 ═ 55 μm), 25 parts of lanthanum oxide (D50 ═ 40 μm), and 0.3 part of a silica sol solution (silica sol content 10%, silica particle size in silica sol 20 to 60nm), 0.1 part of polyvinyl pyrrolidone (molecular weight 55000), 0.1 part of carboxymethyl cellulose, and 0.1 part of a styrene-butadiene rubber solution (styrene-butadiene rubber content 50%) were stirred in a stirrer with water as a solvent for 30 minutes at a stirring speed of 300rpm with a solid content of 40% being controlled. And transferring the slurry into a ball mill after stirring is finished, carrying out wet ball milling to obtain slurry A, wherein the rotating speed of the ball mill is 200 r/min, the ball milling time is 2 hours, a water-cooling jacket is arranged on the outer layer of a ball milling tank, and the temperature of the slurry is kept at 30 ℃. The parts ratio is mass ratio.
Adding chloroplatinic acid with a certain mass into the slurry A, controlling the total mass ratio of platinum to zirconia, alumina and lanthanum oxide to be 0.1%, and stirring at 300rpm for 2 hours to obtain a catalyst precursor slurry B, wherein the reaction temperature is normal temperature.
(2) Coating and calcining active slurry: and (3) coating the coating slurry B by using cordierite honeycomb ceramic (with the mesh number of 300 meshes) with the length, width and height of 10cm by 10cm as a coating carrier and using a lower feeding automatic coating machine as loading equipment, controlling the coating amount to be 100g of slurry/L, drying the obtained sample at 80 ℃ to constant weight, and calcining the sample at 600 ℃ for 2 hours in the air atmosphere to obtain the volatile organic compound treatment catalyst.
And (3) testing the performance of the catalyst: the performance test was carried out in a fixed bed, and the catalyst was cut into 20mm by 30mm samples in the direction of the channels and placed in the bed along the axis of the reactor. The concentration of toluene and O2 is 600ppm and 18% respectively, the airspeed of the mixed gas is 3000h-1, and N2 is carrier gas; the reaction temperature is 100-200 ℃.
The above examples and comparative examples were conducted to examine factors such as the catalyst components and the platinum active site supporting method. When the in-situ loaded noble metal active site nano particles are coated and sintered at low temperature to obtain the volatile organic compound treatment catalyst, the toluene removal in the temperature range of 100-200 ℃ can be realized, the toluene removal rate reaches 95.6% at 200 ℃, while the ex-situ volatile organic compound treatment catalyst obtained by high-temperature calcination has low toluene initiation temperature and only 10.6% of toluene removal rate at 200 ℃, and the toluene removal rates (%) of different catalysts are shown in table 1.
TABLE 1
| Temperature (. degree.C.) | Example 1 | Example 2 | Example 3 | Comparative example 1 |
| 100 | 11.3 | 11.3 | 15.8 | 0 |
| 120 | 19.4 | 19.2 | 18.7 | 0 |
| 140 | 26.9 | 32.5 | 36.8 | 0 |
| 160 | 44.5 | 47.6 | 51.1 | 0 |
| 180 | 78.1 | 82.9 | 89.7 | 4.7％ |
| 200 | 92.4 | 94.3 | 95.6 | 10.6％ |
According to the invention, the noble metal active site nano particles are loaded in situ in the carrier and auxiliary agent slurry, and the low ignition temperature volatile organic compound treatment catalyst is obtained by coating and low-temperature calcining. Not only solves the problem of active site agglomeration in the production process of the volatile organic compound treatment catalyst, but also reduces the production energy consumption of the volatile organic compound treatment catalyst.
The application of the catalyst for treating volatile organic compounds is to use the cordierite honeycomb ceramic monolithic catalyst for catalytic treatment of volatile organic pollutants at the temperature of not higher than 100 ℃.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A volatile organic compound treatment catalyst takes cordierite honeycomb ceramic as a coating carrier, and is characterized in that: the precursor is as follows in sequence: adding noble metal ion liquid into the precursor slurry A formed by ball milling and stirring to form precursor slurry B so as to generate precursor slurry C of noble metal active site nano particles in situ;
the precursor slurry A uses metal oxidation as a grinding material, and the sintering temperature of the cordierite honeycomb ceramic coated with the catalyst is 150-230 ℃.
2. The voc abatement catalyst of claim 1, wherein the precursor slurry a comprises zirconium oxide, and further comprises at least one of cerium, aluminum, and lanthanum oxides.
3. The VOC abatement catalyst of claim 2, wherein the precursor slurry C is prepared by adding a potassium borohydride solution to a precursor slurry B containing platinum nitrate under the protection of nitrogen, wherein the molar ratio of potassium borohydride to platinum is 7.5: 1, the mesh number of the cordierite honeycomb ceramic is 300 meshes.
4. A preparation method of a volatile organic compound treatment catalyst is characterized by comprising the following steps:
preparing a metal ball milling liquid at least containing zirconium oxide;
adding platinum tetraammine nitrate to obtain ionic platinum slurry;
under the protection of nitrogen, adding a potassium borohydride solution, and carrying out in-situ preparation of metal active site nanoparticles by platinum on an oxide carrier;
cordierite honeycomb ceramic is used as a coating carrier to coat the in-situ solution with the noble metal active site nano particles, and the solution is dried and calcined at the temperature of between 150 and 230 ℃.
5. The method of claim 5, wherein at least one of cerium oxide, aluminum oxide, lanthanum oxide, or silicon oxide is added to the metal ball milling liquid prior to ball milling.
6. The method of claim 6, wherein the metal ball milling liquid is milled by adding silica sol solution, polyvinylpyrrolidone, carboxymethyl cellulose, and styrene butadiene rubber solution to the metal oxide and milling while controlling the temperature of the solution at 20-40 ℃.
7. The method of claim 2, wherein the total mass of the metal oxide or the metal oxide and the silicon oxide is not more than 3% of the mass of the platinum.
8. The method of claim 2, wherein the molar ratio of potassium borohydride to platinum metal is 7.5: 1.
9. the method for preparing a volatile organic compound abatement catalyst according to claim 2, wherein the in-situ solution of noble metal active site nanoparticles is coated on cordierite honeycomb ceramic with length, width and height of 10cm, the coating amount is 100g slurry/L, the obtained sample is dried to constant weight at 80 ℃, and calcined for 2 hours at 200 ℃ in air atmosphere.
10. Use of a voc remediation catalyst according to claim 1 wherein the catalyst has voc pollutants at a temperature of no more than 100 ℃ in a cordierite honeycomb ceramic monolith catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111602286.7A CN114029056A (en) | 2021-12-24 | 2021-12-24 | Volatile organic compound treatment catalyst, preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111602286.7A CN114029056A (en) | 2021-12-24 | 2021-12-24 | Volatile organic compound treatment catalyst, preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114029056A true CN114029056A (en) | 2022-02-11 |
Family
ID=80141160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111602286.7A Pending CN114029056A (en) | 2021-12-24 | 2021-12-24 | Volatile organic compound treatment catalyst, preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114029056A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155576A (en) * | 2022-07-22 | 2022-10-11 | 山东亮剑环保新材料有限公司 | Preparation method of monolithic metal substrate precious metal catalytic module |
| CN115672314A (en) * | 2022-11-01 | 2023-02-03 | 兖矿科技有限公司 | Honeycomb catalyst, preparation method and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748861A (en) * | 2005-08-29 | 2006-03-22 | 浙江大学 | Process for preparing rare-earth composite porous aluminium oxide loaded Pd catalyst |
| CN102240549A (en) * | 2010-05-13 | 2011-11-16 | 上海牛翼新能源科技有限公司 | Catalysis technique for high-efficiency, moisture-resistance and room-temperature formaldehyde removal |
| CN102836712A (en) * | 2011-06-24 | 2012-12-26 | 上海牛翼新能源科技有限公司 | Catalyst for completely removing formaldehyde in indoor air at room temperature |
| CN102895969A (en) * | 2012-10-15 | 2013-01-30 | 武汉理工大学 | Method for preparing formaldehyde room temperature oxidation catalyst |
| CN105289298A (en) * | 2015-10-27 | 2016-02-03 | 展宗城 | Catalytic module capable of removing formaldehyde at room temperature and preparation method thereof |
| CN107876050A (en) * | 2017-11-10 | 2018-04-06 | 杭州尹力环保科技有限公司 | A kind of catalyst for purifying organic waste gas and preparation method thereof |
| CN109046347A (en) * | 2018-08-07 | 2018-12-21 | 中船重工黄冈贵金属有限公司 | A kind of preparation method of low temperature volatile organic compound cleaning catalyst |
| CN109794160A (en) * | 2017-11-16 | 2019-05-24 | 浙江盾安人工环境股份有限公司 | A kind of catalyst and preparation method thereof for decomposing formaldehyde |
-
2021
- 2021-12-24 CN CN202111602286.7A patent/CN114029056A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748861A (en) * | 2005-08-29 | 2006-03-22 | 浙江大学 | Process for preparing rare-earth composite porous aluminium oxide loaded Pd catalyst |
| CN102240549A (en) * | 2010-05-13 | 2011-11-16 | 上海牛翼新能源科技有限公司 | Catalysis technique for high-efficiency, moisture-resistance and room-temperature formaldehyde removal |
| CN102836712A (en) * | 2011-06-24 | 2012-12-26 | 上海牛翼新能源科技有限公司 | Catalyst for completely removing formaldehyde in indoor air at room temperature |
| CN102895969A (en) * | 2012-10-15 | 2013-01-30 | 武汉理工大学 | Method for preparing formaldehyde room temperature oxidation catalyst |
| CN105289298A (en) * | 2015-10-27 | 2016-02-03 | 展宗城 | Catalytic module capable of removing formaldehyde at room temperature and preparation method thereof |
| CN107876050A (en) * | 2017-11-10 | 2018-04-06 | 杭州尹力环保科技有限公司 | A kind of catalyst for purifying organic waste gas and preparation method thereof |
| CN109794160A (en) * | 2017-11-16 | 2019-05-24 | 浙江盾安人工环境股份有限公司 | A kind of catalyst and preparation method thereof for decomposing formaldehyde |
| CN109046347A (en) * | 2018-08-07 | 2018-12-21 | 中船重工黄冈贵金属有限公司 | A kind of preparation method of low temperature volatile organic compound cleaning catalyst |
Non-Patent Citations (1)
| Title |
|---|
| 王天明: ""低浓度有机物催化燃烧整体式催化剂制备与性能分析"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, pages 4 - 7 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155576A (en) * | 2022-07-22 | 2022-10-11 | 山东亮剑环保新材料有限公司 | Preparation method of monolithic metal substrate precious metal catalytic module |
| CN115672314A (en) * | 2022-11-01 | 2023-02-03 | 兖矿科技有限公司 | Honeycomb catalyst, preparation method and application thereof |
| CN115672314B (en) * | 2022-11-01 | 2024-06-07 | 山东能源集团有限公司 | Honeycomb catalyst and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5898014A (en) | Catalyst composition containing oxygen storage components | |
| KR100431476B1 (en) | Layered Catalyst Composite | |
| US6248688B1 (en) | Catalyst composition containing oxygen storage components | |
| CN110614101A (en) | Catalyst for catalytic combustion of VOCs and preparation method thereof | |
| US3615166A (en) | Catalysts for purification of waste gases containing oxides of nitrogen | |
| JP4501012B2 (en) | Combustion catalyst for diesel exhaust gas treatment and diesel exhaust gas treatment method | |
| CN110605114B (en) | Application of mullite oxide supported catalyst in low-temperature selective catalytic reduction denitration | |
| JPH03224631A (en) | Continuously operating catalyst for oxidizing and purifying exhaust gas from diesel engine without discharging particulate and interrupting gas purification periodically | |
| TWI442972B (en) | The method of preparation of cerium oxide supported gold-palladium catalysts and its application in destruction of volatile organic compounds | |
| JP2008188542A (en) | Catalyst for treating exhaust gas, manufacturing method thereof and exhaust gas treatment method | |
| CN114029056A (en) | Volatile organic compound treatment catalyst, preparation method and application thereof | |
| WO2019045430A1 (en) | Methane oxidation catalyst and method for oxidizing methane by using catalyst | |
| US20240066505A1 (en) | Noble metal single atom supported three-way catalyst and preparation method therefor and use thereof | |
| JP2006181484A (en) | Catalyst, exhaust gas cleaning catalyst and method for preparing the catalyst | |
| CN115445651A (en) | Pure silicon molecular sieve supported palladium catalyst for methane catalytic combustion and preparation method thereof | |
| CN111111656B (en) | High-temperature-resistant catalytic combustion catalyst capable of catalyzing and igniting VOCs (volatile organic compounds) to perform self-sustaining combustion at normal temperature and preparation method and application thereof | |
| CN109261147B (en) | Pt-Pd single-coating catalyst for treating benzene substances and preparation method thereof | |
| CN107552048B (en) | Catalyst for eliminating volatile organic compounds and preparation method thereof | |
| JP4298071B2 (en) | Exhaust gas purification material and method for producing the same | |
| CN115624973B (en) | Sulfur poisoning resistant monolithic catalyst and preparation method and application thereof | |
| CN111389396A (en) | Carbon smoke removing catalyst and preparation method and application thereof | |
| CN114308069A (en) | Preparation method of denitration catalyst with ammonia decomposition function | |
| CN114939418B (en) | Pd-containing device 1 Monoatomic catalyst with M/carrier structure and application thereof | |
| JP5641674B2 (en) | Catalyst for treating exhaust gas containing organic acid | |
| CN1472006A (en) | Sundex low-temperature catalytic combustion nanometre composite oxide catalyst and preparing 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 |