CN108722431A - A kind of A doping type double-perovskite catalyst and the preparation method and application thereof - Google Patents
A kind of A doping type double-perovskite catalyst and the preparation method and application thereof Download PDFInfo
- Publication number
- CN108722431A CN108722431A CN201810459689.2A CN201810459689A CN108722431A CN 108722431 A CN108722431 A CN 108722431A CN 201810459689 A CN201810459689 A CN 201810459689A CN 108722431 A CN108722431 A CN 108722431A
- Authority
- CN
- China
- Prior art keywords
- salt
- nitrate
- doping type
- perovskite catalyst
- type double
- 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.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 150000003839 salts Chemical class 0.000 claims abstract description 169
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims abstract description 63
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Inorganic materials [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 229910052796 boron Inorganic materials 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 6
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 6
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 5
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 5
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 5
- 229910052788 barium Inorganic materials 0.000 claims abstract description 5
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 5
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 65
- 235000019441 ethanol Nutrition 0.000 claims description 27
- 239000004323 potassium nitrate Substances 0.000 claims description 25
- 235000010333 potassium nitrate Nutrition 0.000 claims description 25
- 239000004317 sodium nitrate Substances 0.000 claims description 25
- 235000010344 sodium nitrate Nutrition 0.000 claims description 25
- 230000003197 catalytic effect Effects 0.000 claims description 21
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 18
- 239000012266 salt solution Substances 0.000 claims description 18
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical group [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 claims description 13
- 229910001981 cobalt nitrate Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 10
- 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 10
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000011833 salt mixture Substances 0.000 claims description 9
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 8
- 229940010552 ammonium molybdate Drugs 0.000 claims description 8
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 8
- 239000011609 ammonium molybdate Substances 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 7
- 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 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 150000003624 transition metals Chemical group 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 21
- 238000006555 catalytic reaction Methods 0.000 abstract description 11
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 abstract description 10
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 21
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical group [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 12
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical group [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 description 12
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical group [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 description 9
- 230000010718 Oxidation Activity Effects 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 7
- 239000011575 calcium Substances 0.000 description 6
- CFYGEIAZMVFFDE-UHFFFAOYSA-N neodymium(3+);trinitrate Chemical group [Nd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O CFYGEIAZMVFFDE-UHFFFAOYSA-N 0.000 description 6
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 6
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical group [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000005169 Debye-Scherrer Methods 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 3
- APLQTTYBCHJFIJ-UHFFFAOYSA-N [Ba].[N+](=O)(O)[O-] Chemical compound [Ba].[N+](=O)(O)[O-] APLQTTYBCHJFIJ-UHFFFAOYSA-N 0.000 description 3
- JJJBUGDRBSGCTD-UHFFFAOYSA-N [Sr].[N+](=O)(O)[O-] Chemical compound [Sr].[N+](=O)(O)[O-] JJJBUGDRBSGCTD-UHFFFAOYSA-N 0.000 description 3
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical group [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 3
- MWFSXYMZCVAQCC-UHFFFAOYSA-N gadolinium(iii) nitrate Chemical group [Gd+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O MWFSXYMZCVAQCC-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 235000011056 potassium acetate Nutrition 0.000 description 3
- 239000001632 sodium acetate Substances 0.000 description 3
- 235000017281 sodium acetate Nutrition 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 229910019016 NaNO3—KNO3 Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- WLQXPAUZYVXSNE-UHFFFAOYSA-N [Ca].O[N+]([O-])=O Chemical compound [Ca].O[N+]([O-])=O WLQXPAUZYVXSNE-UHFFFAOYSA-N 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
- 230000008901 benefit Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J23/847—Vanadium, niobium or tantalum or polonium
- B01J23/8474—Niobium
-
- 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
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
- B01J23/881—Molybdenum and iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
Abstract
The present invention relates to a kind of A doping type double-perovskite catalyst and the preparation method and application thereof, belong to catalyst technical field.The chemical general formula of A doping type double-perovskite catalyst of the present invention is A2‑xA’xBB’O6, wherein A is rare-earth metals La, Ce, Nd or Gd, and A ' is alkali earth metal Mg, Ca, Sr or Ba, and B is transition metal element Co, Fe, Ni, Cu, Mn or Mo, and B ' is transition metal element Co, Fe, Ni, Cu, Mn or Mo, and B ≠ B '.The present invention uses molte-salt synthesis, in NaNO3And KNO3Melt the doping type double-perovskite catalyst A that nanometer regular morphology is prepared in salt system2‑xA’xBB’O6.Nitric oxide catalysis oxidation can be efficiently nitrogen dioxide within the scope of lower temperature and wider temperature by A doping type double-perovskite catalyst.
Description
Technical field
The present invention relates to a kind of A doping type double-perovskite catalyst and the preparation method and application thereof, belong to catalyst skill
Art field.
Background technology
In purifying vehicle exhaust technical aspect, NO is NO by catalysis oxidation2Committed step is served not only as, and with important
Meaning：In LNT (the Lean-burn NOX Trap) stages, NO is oxidized to the NO being stored more easily2；In SCR (Selective
Catalytic Reduction) stage, NO：NO2Ratio be 1:1 catalytic efficiency is optimal；NO in particle trapper DPF2Presence
The initiation temperature of soot can be significantly reduced.The catalyst of catalytic oxidation NO is commonly used mainly using Pt as activated centre
It is supported on A12O3On equal carriers, wherein the load capacity of noble metal is 2% 3%.The higher operating costs of this catalyst, and your gold
Belonging to can occur to reunite and catalytic performance is made to decline in high-temperature catalytic reaction.
Compared with the noble metal catalysts such as Pt, Ru, Pd, perovskite material has cheap, stable structure, catalytic activity
The features such as thermodynamic property is stablized under good and high temperature has good development potentiality in tail gas catalytic purification field.But by
, specific surface area bad in the characteristic of its low temperature ignition is low and complicated component is difficult to deficiency prepared by batch, limits perovskite
The performance of material advantage and actual application.
Invention content
The problem of existing for the above-mentioned prior art and deficiency, the present invention provide a kind of A doping type double-perovskite catalysis
The chemical general formula of agent and the preparation method and application thereof, A doping type double-perovskite catalyst of the present invention is A2-xA’xBB’O6, wherein
0.1≤x≤0.5, A are rare-earth metals La, Ce, Nd or Gd, and A ' is alkali earth metal Mg, Ca, Sr or Ba, and B is transition
Metallic element Co, Fe, Ni, Cu, Mn or Mo, B ' are transition metal element Co, Fe, Ni, Cu, Mn or Mo, and B ≠ B '.A doping
Nitric oxide catalysis oxidation can be efficiently by type double-perovskite catalyst at a lower temperature and within the scope of wider temperature
Nitrogen dioxide, it is at low cost, 80% or more can reach to the conversion ratio of nitric oxide catalysis oxidation, more adapt to urging for NO under high temperature
Change oxidation.
The preparation method of the A doping type double-perovskite catalyst, is as follows：
（1）A salt, A ' salt, B salt and B ' salt are added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A
Salt be rare-earth metals La, Ce, Nd or Gd nitrate, A ' salt be alkali earth metal Mg, Ca, Sr or Ba nitrate, B
Salt is cobalt nitrate, ferric nitrate, nickel nitrate, copper nitrate, manganese nitrate or ammonium molybdate, and B ' salt is cobalt nitrate, ferric nitrate, nickel nitrate, nitre
Sour copper, manganese nitrate or ammonium molybdate, and B salt ≠ B ' salt；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium nitrate and sodium nitrate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 400 ~ 800 DEG C with the heating rate of 2 ~ 10 DEG C/min and roasts 3 ~ 10h,
Then room temperature is at the uniform velocity cooled to the rate of temperature fall of 2 ~ 3 DEG C/min；
（4）By step（3）Gained product of roasting uses temperature to be washed for 70 ~ 80 DEG C of deionized water for 3 times or more, and then drying is
Obtain A doping type double-perovskite catalyst；
Further, the integral molar quantity of the A salt, A ' salt, B salt and B ' salt and the ratio of the integral molar quantity of potassium nitrate and sodium nitrate are
1:(20~60)；
Further, the molar ratio of the A salt, A ' salt, B salt and B ' salt is (2-x):x:1:1, wherein 0.1≤x≤0.5；
Further, the molar ratio of the potassium nitrate and sodium nitrate is 1:(1~1.5).
The molten salt system of the present invention chooses NaNO3-KNO3Two end number mixing salt system, under standard pressure, NaNO3Fusing point be
308 DEG C, KNO3Fusing point be 344 DEG C, in NaNO3With KNO3Lowest total of the melting point proportioning composition molar fraction NaNO3/(NaNO3
+KNO3) be 47% when lowest total of the melting point be 225 DEG C, i.e., temperature be 225 DEG C when initially form fused salt eutectic, NaNO3-
KNO3Two end number mixing salt system does not dissolve in absolute ethyl alcohol, other metal mixed salt is not interfered to be uniformly mixed in absolute ethyl alcohol；?
Under high-temperature molten salt state, the partial oxidation oxic gas that makes the solid phase synthesis of double-perovskite catalyst be decomposed in fused salt eutectic
It is carried out in atmosphere, is conducive to the formation of metal oxide, after solid phase synthesis, NaNO3-KNO3Two end number mixing salt system group
It is point soluble easily in water, it can quickly remove the fuse salt system component of double-perovskite catalyst.
A doping type double-perovskite catalyst can be used for catalytic oxidation NO, can at a lower temperature and wider temperature
Spend range in efficiently by nitric oxide catalysis oxidation be nitrogen dioxide, have good thermal stability, can keep for a long time compared with
High catalytic activity, hence it is evident that improve the removal efficiency of nitrogen oxides in vehicle exhaust.
The beneficial effects of the invention are as follows：
（1）The method of the present invention, as mixed melting salt, is roasted in mixed melting salt and is mixed up to A using potassium nitrate and sodium nitrate
Miscellaneous type double-perovskite catalyst A2-xA’xBB’O6, preparation method is simple, easily operated, is suitble to heavy industrialization application；
（2）A doping type double-perovskite catalyst of the present invention is double-perovskite type structure, and stable structure is not easy phase transformation, thus has
There are excellent thermal stability, long lifespan that can keep higher catalytic activity for a long time；
（3）A doping type double-perovskite catalyst of the present invention can be used for catalytic oxidation NO, can be at a lower temperature and wider
Within the temperature range of efficiently by nitric oxide catalysis oxidation be nitrogen dioxide, have good thermal stability, can protect for a long time
Hold higher catalytic activity, hence it is evident that improve the removal efficiency of nitrogen oxides in vehicle exhaust.
Description of the drawings
Fig. 1 is the La that embodiment 1 is adulterated1.5Ba0.5CoMnO6The XRD spectrum of double-perovskite catalyst；
Fig. 2 is the conversion ratio-temperature variation curve for the double-perovskite catalyst oxidization of nitric oxide that embodiment 1 ~ 3 is adulterated.
Specific implementation mode
With reference to embodiment, the invention will be further described.
Embodiment 1：A doping type double-perovskite catalyst of the present embodiment are La1.5Ba0.5CoMnO6；
The preparation method of A doping type double-perovskite catalyst, is as follows：
（1）By A salt（A salt is lanthanum nitrate）, A ' salt（A ' salt is barium nitrate）, B salt（B salt is cobalt nitrate）And B ' salt（B ' salt is nitre
Sour manganese）It is added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A salt（Lanthanum nitrate）, A ' salt（Nitric acid
Barium）, B salt（Cobalt nitrate）And B ' salt（Manganese nitrate）Molar ratio be 1.5:0.5:1:1；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium nitrate and sodium nitrate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；Wherein A salt（Lanthanum nitrate）, A ' salt（Barium nitrate）, B salt（Cobalt nitrate）And B ' salt（Manganese nitrate）Integral molar quantity and potassium nitrate
Ratio with the integral molar quantity of sodium nitrate is 1:30；The molar ratio of potassium nitrate and sodium nitrate is 1:1；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 700 DEG C with the heating rate of 2 DEG C/min and roasts 6h, then with 2 DEG C/
The rate of temperature fall of min is at the uniform velocity cooled to room temperature；
（4）Temperature is used to wash 3 steps for 80 DEG C of deionized water（3）Then gained product of roasting is drying to obtain A doping
Type La1.5Ba0.5CoMnO6Double-perovskite catalyst；
The positions the A doping type La of the present embodiment1.5Ba0.5CoMnO6The XRD spectrum of double-perovskite catalyst is as shown in Figure 1, can from Fig. 1
Know, the La of pure phase1.5Ba0.5CoMnO6Spectrogram, 2 θ be 23 °, 32 °, 40 °, 47 °, 52 °, 58 °, 68 ° and 78 ° at occur
The characteristic diffraction peak of perovskite structure, the not appearance of dephasign peak, it was demonstrated that form single-phase rare earth double-perovskite composition metal
Oxide structure.According to Debye Scherrer formula (Debye-Scherrer equation), we can calculate the flat of nanotube sample
Equal crystallite dimension.The expression of Debye Scherrer formula is：D=k λ/(β cos θ), wherein k are Scherrer constant, and numerical value is
0.89, λ is the wavelength of incident X-rays, and β is the full width at half maximum (FWHM) of diffraction maximum, and θ is the angle of diffraction.Deduct instrumental broadening factor
Later, La is calculated in we1.5Ba0.5CoMnO6The average grain size of double-perovskite catalyst is 14nm.
The positions the A doping type La of the present embodiment1.5Ba0.5CoMnO6The NO catalytic oxidation activities evaluation of double-perovskite catalyst is real
It tests in homemade columned reactor and carries out, wherein a diameter of 6 mm of columned reactor, length is 550 mm, will
The positions the A doping type La of 500mg1.5Ba0.5CoMnO6Double-perovskite catalyst is placed in reactor center position, the quartzy tampon in both ends
Firmly；Before carrying out catalysis reaction, by catalyst in 10%O2/N2（500ml/min）It is 300 DEG C of stabilizations that temperature is warming up under atmosphere
1h, it is 100 DEG C that temperature is then cooled under identical atmosphere, and after temperature stabilization, it is containing for 500 mL/min to be passed through total flow
There are 500 ppm NO, 10%O2N2Balance Air, air speed (GHSV) are 30000 h-1；Stablize 30 ~ 60min at being 150 DEG C in temperature
Until NO concentration at the outlet no longer changes；Under identical atmosphere, catalyst is risen to temperature with the heating rate of 10 DEG C/min is
450 DEG C, after initial concentration measures, temperature controller setting value is adjusted, reactor is made to reach required test temperature, Range of measuring temp
It is 150 DEG C ~ 400 DEG C, a test point is taken every 25 DEG C, is respectively kept for 15 minutes in each test point, export NOX（NO,NO2）It is dense
Degree is analyzed by 42i-HL type high concentration nitrogen oxide analyzers；A doping type La1.5Ba0.5CoMnO6Double-perovskite catalyst is urged
Change NO and is oxidized to NO2Conversion ratio as shown in Fig. 2, as can be seen from Figure 2, A doping type La1.5Ba0.5CoMnO6Double-perovskite catalyst
Maximum conversion be 83%, the temperature corresponding to maximum conversion is 270 DEG C.Catalysis oxygen of the double-perovskite catalyst to NO
Change performance and comply fully with thermodynamical equilibrium, i.e., NO is oxidized to NO under thermodynamical equilibrium2Conversion ratio reach maximum value after, with
The raising of temperature, conversion ratio continuously decrease, therefore there are maximum conversions.
Embodiment 2：A doping type double-perovskite catalyst of the present embodiment are La1.9Ba0.1CoMnO6；
The preparation method of A doping type double-perovskite catalyst, is as follows：
（1）By A salt（A salt is lanthanum nitrate）, A ' salt（A ' salt is barium nitrate）, B salt（B salt is cobalt nitrate）And B ' salt（B ' salt is nitre
Sour manganese）It is added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A salt（Lanthanum nitrate）, A ' salt（Nitric acid
Barium）, B salt（Cobalt nitrate）And B ' salt（Manganese nitrate）Molar ratio be 1.9:0.1:1:1；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium nitrate and sodium nitrate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；Wherein A salt（Lanthanum nitrate）, A ' salt（Barium nitrate）, B salt（Cobalt nitrate）And B ' salt（Manganese nitrate）Integral molar quantity and potassium nitrate
Ratio with the integral molar quantity of sodium nitrate is 1:30；The molar ratio of potassium nitrate and sodium nitrate is 1:1.1；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 800 DEG C with the heating rate of 3 DEG C/min and roasts 4h, then with 2.5
DEG C/rate of temperature fall of min is at the uniform velocity cooled to room temperature；
（4）Temperature is used to wash 4 steps for 78 DEG C of deionized water（3）Then gained product of roasting is drying to obtain A doping
Type La1.9Ba0.1CoMnO6Double-perovskite catalyst；
The positions the A doping type La of the present embodiment1.9Ba0.1CoMnO6The NO catalytic oxidation activities evaluation experimental of double-perovskite catalyst with
Embodiment 1 is identical, A doping type La1.9Ba0.1CoMnO6The catalysis NO of double-perovskite catalyst is oxidized to NO2Conversion ratio as scheme
Shown in 2, as can be seen from Figure 2, A doping type La1.9Ba0.1CoMnO6The maximum conversion of double-perovskite catalyst is 88%, and highest turns
Temperature corresponding to rate is 325 DEG C.
Embodiment 3：A doping type double-perovskite catalyst of the present embodiment are La1.75Ba0.25CoMnO6；
The preparation method of A doping type double-perovskite catalyst, is as follows：
（1）By A salt（A salt is lanthanum nitrate）, A ' salt（A ' salt is barium nitrate）, B salt（B salt is cobalt nitrate）And B ' salt（B ' salt is nitre
Sour manganese）It is added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A salt（Lanthanum nitrate）, A ' salt（Nitric acid
Barium）, B salt（Cobalt nitrate）And B ' salt（Manganese nitrate）Molar ratio be 1.75:0.25:1:1；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium nitrate and sodium nitrate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；Wherein A salt（Lanthanum nitrate）, A ' salt（Barium nitrate）, B salt（Cobalt nitrate）And B ' salt（Manganese nitrate）Integral molar quantity and potassium nitrate
Ratio with the integral molar quantity of sodium nitrate is 1:30；The molar ratio of potassium nitrate and sodium nitrate is 1:1.2；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 800 DEG C with the heating rate of 4 DEG C/min and roasts 4h, then with 3 DEG C/
The rate of temperature fall of min is at the uniform velocity cooled to room temperature；
（4）Temperature is used to wash 5 steps for 75 DEG C of deionized water（3）Then gained product of roasting is drying to obtain A doping
Type La1.75Ba0.25CoMnO6Double-perovskite catalyst；
The positions the A doping type La of the present embodiment1.75Ba0.25CoMnO6The NO catalytic oxidation activity evaluation experimentals of double-perovskite catalyst
It is same as Example 1, A doping type La1.75Ba0.25CoMnO6Double-perovskite catalyst NO is oxidized to NO2Conversion ratio such as
Shown in Fig. 2, as can be seen from Figure 2, A doping type La1.75Ba0.25CoMnO6The maximum conversion of double-perovskite catalyst is 80%, most
Temperature corresponding to high conversion is 325 DEG C.
Embodiment 4：A doping type double-perovskite catalyst of the present embodiment are Ce1.75Sr0.25FeMoO6；
The preparation method of A doping type double-perovskite catalyst, is as follows：
（1）By A salt（A salt is cerous nitrate）, A ' salt（A ' salt is strontium nitrate）, B salt（B salt is ferric nitrate）And B ' salt（B ' salt is molybdenum
Sour ammonium）It is added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A salt（Cerous nitrate）, A ' salt（Nitric acid
Strontium）, B salt（Ferric nitrate）And B ' salt（Ammonium molybdate）Molar ratio be 1.75:0.25:1:1；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium nitrate and sodium nitrate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；Wherein A salt（Cerous nitrate）, A ' salt（Strontium nitrate）, B salt（Ferric nitrate）And B ' salt（Ammonium molybdate）Integral molar quantity and potassium nitrate
Ratio with the integral molar quantity of sodium nitrate is 1:30；The molar ratio of potassium nitrate and sodium nitrate is 1:1.2；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 800 DEG C with the heating rate of 4 DEG C/min and roasts 4h, then with 3 DEG C/
The rate of temperature fall of min is at the uniform velocity cooled to room temperature；
（4）Temperature is used to wash 4 steps for 80 DEG C of deionized water（3）Then gained product of roasting is drying to obtain A doping
Type Ce1.75Sr0.25FeMoO6Double-perovskite catalyst；
The positions the A doping type Ce of the present embodiment1.75Sr0.25FeMoO6The NO catalytic oxidation activity evaluation experimentals of double-perovskite catalyst
It is same as Example 1, A doping type Ce1.75Sr0.25FeMoO6The maximum conversion of double-perovskite catalyst is 84%, and highest turns
Temperature corresponding to rate is 297 DEG C.
Embodiment 5：A doping type double-perovskite catalyst of the present embodiment are Nd1.5Sr0.5NiCuO6；
The preparation method of A doping type double-perovskite catalyst, is as follows：
（1）By A salt（A salt is neodymium nitrate）, A ' salt（A ' salt is strontium nitrate）, B salt（B salt is nickel nitrate）And B ' salt（B ' salt is nitre
Sour copper）It is added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A salt（Neodymium nitrate）, A ' salt（Nitric acid
Strontium）, B salt（Nickel nitrate）And B ' salt（Copper nitrate）Molar ratio be 1.5:0.5:1:1；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium acetate and sodium acetate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；Wherein A salt（Neodymium nitrate）, A ' salt（Strontium nitrate）, B salt（Nickel nitrate）And B ' salt（Copper nitrate）Integral molar quantity and potassium nitrate
Ratio with the integral molar quantity of sodium nitrate is 1:20；The molar ratio of potassium nitrate and sodium nitrate is 1:1.2；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 400 DEG C with the heating rate of 2 DEG C/min and roasts 10h, then with 3
DEG C/rate of temperature fall of min is at the uniform velocity cooled to room temperature；
（4）Temperature is used to wash 6 steps for 72 DEG C of deionized water（3）Then gained product of roasting is drying to obtain A doping
Type Nd1.5Sr0.5NiCuO6Double-perovskite catalyst；
The positions the A doping type Nd of the present embodiment1.5Sr0.5NiCuO6The NO catalytic oxidation activities evaluation experimental of double-perovskite catalyst with
Embodiment 1 is identical, A doping type Nd1.5Sr0.5NiCuO6The maximum conversion of the catalytic performance of double-perovskite catalyst is 81%,
Temperature corresponding to maximum conversion is 315 DEG C.
Embodiment 6：A doping type double-perovskite catalyst of the present embodiment are Gd1.75Ca0.25FeMoO6；
The preparation method of A doping type double-perovskite catalyst, is as follows：
（1）By A salt（A salt is gadolinium nitrate）, A ' salt（A ' salt is calcium nitrate）, B salt（B salt is ferric nitrate）And B ' salt（B ' salt is molybdenum
Sour ammonium）It is added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A salt（Gadolinium nitrate）, A ' salt（Nitric acid
Calcium）, B salt（Ferric nitrate）And B ' salt（Ammonium molybdate）Molar ratio be 1.75:0.25:1:1；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium acetate and sodium acetate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；Wherein A salt（Gadolinium nitrate）, A ' salt（Calcium nitrate）, B salt（Ferric nitrate）And B ' salt（Ammonium molybdate）Integral molar quantity and potassium nitrate
Ratio with the integral molar quantity of sodium nitrate is 1:40；The molar ratio of potassium nitrate and sodium nitrate is 1:1.4；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 400 DEG C with the heating rate of 5 DEG C/min and roasts 10h, then with 2
DEG C/rate of temperature fall of min is at the uniform velocity cooled to room temperature；
（4）Temperature is used to wash 5 steps for 74 DEG C of deionized water（3）Then gained product of roasting is drying to obtain A doping
Type Gd1.75Ca0.25FeMoO6Double-perovskite catalyst；
The positions the A doping type Gd of the present embodiment1.75Ca0.25FeMoO6The NO catalytic oxidation activity evaluation experimentals of double-perovskite catalyst
It is same as Example 1, A doping type Gd1.75Ca0.25FeMoO6The maximum conversion of the catalytic performance of double-perovskite catalyst is
82%, the temperature corresponding to maximum conversion is 320 DEG C.
Embodiment 7：A doping type double-perovskite catalyst of the present embodiment are Sm1.75Mg0.25CoMnO6；
The preparation method of A doping type double-perovskite catalyst, is as follows：
（1）By A salt（A salt is neodymium nitrate）, A ' salt（A ' salt is strontium nitrate）, B salt（B salt is nickel nitrate）And B ' salt（B ' salt is nitre
Sour copper）It is added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A salt（Neodymium nitrate）, A ' salt（Nitric acid
Strontium）, B salt（Nickel nitrate）And B ' salt（Copper nitrate）Molar ratio be 1.5:0.5:1:1；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium acetate and sodium acetate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；Wherein A salt（Neodymium nitrate）, A ' salt（Strontium nitrate）, B salt（Nickel nitrate）And B ' salt（Copper nitrate）Integral molar quantity and potassium nitrate
Ratio with the integral molar quantity of sodium nitrate is 1:20；The molar ratio of potassium nitrate and sodium nitrate is 1:1.5；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 400 DEG C with the heating rate of 2 DEG C/min and roasts 10h, then with 3
DEG C/rate of temperature fall of min is at the uniform velocity cooled to room temperature；
（4）Temperature is used to wash 7 steps for 76 DEG C of deionized water（3）Then gained product of roasting is drying to obtain A doping
Type Nd1.5Sr0.5NiCuO6Double-perovskite catalyst；
The positions the A doping type Sm of the present embodiment1.75Mg0.25CoMnO6The NO catalytic oxidation activity evaluation experimentals of double-perovskite catalyst
It is same as Example 1, A doping type Sm1.75Mg0.25CoMnO6The maximum conversion of the catalytic performance of double-perovskite catalyst is
81%, the temperature corresponding to maximum conversion is 323 DEG C.
The specific implementation mode of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula can also be made without departing from the purpose of the present invention within the knowledge of a person skilled in the art
Go out various change.
Claims (6)
1. a kind of A doping type double-perovskite catalyst, it is characterised in that：Chemical general formula is A2-xA’xBB’O6, wherein 0.1≤x
≤ 0.5, A are rare-earth metals La, Ce, Nd or Gd, and A ' is alkali earth metal Mg, Ca, Sr or Ba, and B is transition metal member
Plain Co, Fe, Ni, Cu, Mn or Mo, B ' are transition metal element Co, Fe, Ni, Cu, Mn or Mo, and B ≠ B '.
2. the preparation method of A described in claim 1 doping type double-perovskite catalyst, which is characterized in that be as follows：
（1）A salt, A ' salt, B salt and B ' salt are added in absolute ethyl alcohol and is ground to dissolving and obtains ethyl alcohol metal salt solution, wherein A
Salt be rare-earth metals La, Ce, Nd or Gd nitrate, A ' salt be alkali earth metal Mg, Ca, Sr or Ba nitrate, B
Salt is cobalt nitrate, ferric nitrate, nickel nitrate, copper nitrate, manganese nitrate or ammonium molybdate, and B ' salt is cobalt nitrate, ferric nitrate, nickel nitrate, nitre
Sour copper, manganese nitrate or ammonium molybdate, and B salt ≠ B ' salt；
（2）In step（1）Gained ethyl alcohol metal salt solution, potassium nitrate and sodium nitrate are uniformly mixed, and drying and volatilizing ethyl alcohol is mixed
Close salt；
（3）Step（2）Gained salt-mixture is at the uniform velocity warming up to 400 ~ 800 DEG C with the heating rate of 2 ~ 10 DEG C/min and roasts 3 ~ 10h,
Then room temperature is at the uniform velocity cooled to the rate of temperature fall of 2 ~ 3 DEG C/min；
（4）By step（3）Gained product of roasting uses temperature to be washed for 70 ~ 80 DEG C of deionized water for 3 times or more, and then drying is
Obtain A doping type double-perovskite catalyst.
3. the preparation method of A doping type double-perovskite catalyst according to claim 2, it is characterised in that：A salt, A ' salt,
The integral molar quantity of B salt and B ' salt is 1 with the ratio of potassium nitrate and the integral molar quantity of sodium nitrate:(20~60).
4. the preparation method of A doping type double-perovskite catalyst according to claim 2, it is characterised in that：A salt, A ' salt,
The molar ratio of B salt and B ' salt is (2-x):x:1:1, wherein 0.1≤x≤0.5.
5. the preparation method of A doping type double-perovskite catalyst according to claim 2, it is characterised in that：Potassium nitrate with
The molar ratio of sodium nitrate is 1:(1~1.5).
6. application of A described in the claim 1 doping type double-perovskite catalyst in catalytic oxidation NO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810459689.2A CN108722431B (en) | 2018-05-15 | 2018-05-15 | A-site doped double perovskite catalyst and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810459689.2A CN108722431B (en) | 2018-05-15 | 2018-05-15 | A-site doped double perovskite catalyst and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108722431A true CN108722431A (en) | 2018-11-02 |
| CN108722431B CN108722431B (en) | 2021-06-18 |
Family
ID=63938377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810459689.2A Active CN108722431B (en) | 2018-05-15 | 2018-05-15 | A-site doped double perovskite catalyst and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108722431B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068710A (en) * | 2019-12-13 | 2020-04-28 | 中国石油大学(北京) | Catalyst for burning carbon smoke and preparation method and application thereof |
| CN111744494A (en) * | 2020-06-11 | 2020-10-09 | 北京华电光大环境股份有限公司 | Flat plate type CO and SO2And NOxSynchronous removal catalyst and preparation method thereof |
| CN112755981A (en) * | 2021-01-28 | 2021-05-07 | 四川大学 | Solid solution structure adsorbent, preparation method and application in separating Cr (VI) contained in water body |
| WO2022089072A1 (en) * | 2020-10-27 | 2022-05-05 | 中国石油化工股份有限公司 | Catalyst and method for sulfur-tolerant shift catalytic reaction |
| CN114614033A (en) * | 2022-05-11 | 2022-06-10 | 深圳大学 | Solid oxide fuel cell oxygen reduction catalyst and preparation method and application thereof |
| CN115353151A (en) * | 2022-08-24 | 2022-11-18 | 华北电力大学 | Synthesis method of rare earth cobalt-based oxide electronic phase change material |
| CN115626666A (en) * | 2022-10-08 | 2023-01-20 | 天津大学 | Tricalcium titanium ore type composite metal oxide oxygen carrier and preparation method and application thereof |
| CN116408068A (en) * | 2023-04-12 | 2023-07-11 | 江西中科鸿虔新材料有限公司 | Perovskite type MnO 2 Preparation method of catalyst and NH (NH) thereof 3 Application in SCR reactions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088961A (en) * | 1993-12-08 | 1994-07-06 | 林科 | Preparation method of a kind of perovskite type rare-earth compound oxide CO burning catalyst and products thereof and purposes |
| CN102941099A (en) * | 2012-11-22 | 2013-02-27 | 天津大学 | Lanthanum calcium iron cobalt calcium titanium ore type catalyst for oxidizing and reforming ethanol and method for preparing catalyst |
| CN106238066A (en) * | 2016-07-29 | 2016-12-21 | 武汉理工大学 | A kind of spherical porous perovskite type catalyst La0.4sr0.6mn0.8fe0.2o3and its preparation method and application |
| CN106732647A (en) * | 2016-12-02 | 2017-05-31 | 北京三聚环保新材料股份有限公司 | A kind of perovskite type methyl hydride combustion catalyst and preparation method and application |
| CN106944093A (en) * | 2017-04-24 | 2017-07-14 | 北京三聚环保新材料股份有限公司 | A kind of Ca-Ti ore type honeycomb monolith methane catalytic combustion catalyst and preparation method thereof |
| CN107285383A (en) * | 2017-06-29 | 2017-10-24 | 宁波吉电鑫新材料科技有限公司 | A kind of one-step synthesis double-perovskite kalium ion battery negative material and preparation method thereof |
-
2018
- 2018-05-15 CN CN201810459689.2A patent/CN108722431B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088961A (en) * | 1993-12-08 | 1994-07-06 | 林科 | Preparation method of a kind of perovskite type rare-earth compound oxide CO burning catalyst and products thereof and purposes |
| CN102941099A (en) * | 2012-11-22 | 2013-02-27 | 天津大学 | Lanthanum calcium iron cobalt calcium titanium ore type catalyst for oxidizing and reforming ethanol and method for preparing catalyst |
| CN106238066A (en) * | 2016-07-29 | 2016-12-21 | 武汉理工大学 | A kind of spherical porous perovskite type catalyst La0.4sr0.6mn0.8fe0.2o3and its preparation method and application |
| CN106732647A (en) * | 2016-12-02 | 2017-05-31 | 北京三聚环保新材料股份有限公司 | A kind of perovskite type methyl hydride combustion catalyst and preparation method and application |
| CN106944093A (en) * | 2017-04-24 | 2017-07-14 | 北京三聚环保新材料股份有限公司 | A kind of Ca-Ti ore type honeycomb monolith methane catalytic combustion catalyst and preparation method thereof |
| CN107285383A (en) * | 2017-06-29 | 2017-10-24 | 宁波吉电鑫新材料科技有限公司 | A kind of one-step synthesis double-perovskite kalium ion battery negative material and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| BAILEI HE ET AL: "Influences of A- or B-site substitution on the activity of LaMnO3 perovskite-type catalyst in oxidation of diesel particle", 《CHEM. ENG.》 * |
| I. O. TROYANCHUK ET AL: "Phase Separation in La2-xAxCoMnO6(A=Ca and Sr) Perovskites", 《JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS》 * |
| J KRISHNA MURTHY ET AL: "Antisite disorder driven spontaneous exchange bias effect in La2−xSrxCoMnO6 (0⩽x⩽1)", 《JOURNAL OF PHYSICS: CONDENSED MATTER》 * |
| XUEHUI HUANG ET AL: "Low temperature molten salt synthesis of porous La1-xSrxMn0.8Fe0.2O3 (0≤x≤0.6) microspheres with high catalytic activity for CO oxidation", 《CHINESE JOURNAL OF CATALYSIS》 * |
| 柏凌: "La(1-x)SrxCo(0.8)Fe(0.2)O3钙钛矿型催化剂的NSR活性及NO氧化动力学研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111068710A (en) * | 2019-12-13 | 2020-04-28 | 中国石油大学(北京) | Catalyst for burning carbon smoke and preparation method and application thereof |
| CN111744494A (en) * | 2020-06-11 | 2020-10-09 | 北京华电光大环境股份有限公司 | Flat plate type CO and SO2And NOxSynchronous removal catalyst and preparation method thereof |
| WO2022089072A1 (en) * | 2020-10-27 | 2022-05-05 | 中国石油化工股份有限公司 | Catalyst and method for sulfur-tolerant shift catalytic reaction |
| CN112755981A (en) * | 2021-01-28 | 2021-05-07 | 四川大学 | Solid solution structure adsorbent, preparation method and application in separating Cr (VI) contained in water body |
| CN112755981B (en) * | 2021-01-28 | 2022-06-24 | 四川大学 | Solid solution structure adsorbent, preparation method and application in separating Cr (VI) contained in water body |
| CN114614033A (en) * | 2022-05-11 | 2022-06-10 | 深圳大学 | Solid oxide fuel cell oxygen reduction catalyst and preparation method and application thereof |
| CN115353151A (en) * | 2022-08-24 | 2022-11-18 | 华北电力大学 | Synthesis method of rare earth cobalt-based oxide electronic phase change material |
| CN115626666A (en) * | 2022-10-08 | 2023-01-20 | 天津大学 | Tricalcium titanium ore type composite metal oxide oxygen carrier and preparation method and application thereof |
| CN116408068A (en) * | 2023-04-12 | 2023-07-11 | 江西中科鸿虔新材料有限公司 | Perovskite type MnO 2 Preparation method of catalyst and NH (NH) thereof 3 Application in SCR reactions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108722431B (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108722431A (en) | A kind of A doping type double-perovskite catalyst and the preparation method and application thereof | |
| Sun et al. | Insights into the Sm/Zr co-doping effects on N2 selectivity and SO2 resistance of a MnOx-TiO2 catalyst for the NH3-SCR reaction | |
| CN108745364A (en) | A kind of preparation method of perovskite catalyst for catalytic oxidation NO | |
| Xu et al. | Tungsten modified MnOx–CeO2/ZrO2 monolith catalysts for selective catalytic reduction of NOx with ammonia | |
| CN108745368A (en) | A kind of double-perovskite catalyst and the preparation method and application thereof | |
| JP6471240B2 (en) | Cerium-zirconium composite oxide, production method thereof and use of catalyst | |
| KR100962082B1 (en) | Catalysts for NOx reduction employing H2 and a method of reducing NOx | |
| Kobayashi et al. | Low temperature selective catalytic reduction of NO by NH 3 over V 2 O 5 supported on TiO 2–SiO 2–MoO 3 | |
| Chen et al. | Effect of MnO2 crystal types on CeO2@ MnO2 oxides catalysts for low-temperature NH3-SCR | |
| TW201201908A (en) | Catalyst composition for selective catalytic reduction of exhaust gases | |
| CN104624184A (en) | Mullite compound oxide catalyst for oxidizing nitric oxide | |
| CN107456964A (en) | For the extra specific surface area perovskite type composite oxide catalyst of hydrocarbon low-temperature oxidation and its preparation | |
| CN103801288B (en) | For the composite oxide catalysts and preparation method thereof of oxidation of nitric oxide | |
| CN108745369A (en) | A kind of B doping type double-perovskite catalyst and the preparation method and application thereof | |
| CN108671946A (en) | Phosphorus doping cerium titanium catalyst, preparation and its application in selective-catalytic-reduction denitrified | |
| Zhao et al. | FeVO 4-supported Mn–Ce oxides for the low-temperature selective catalytic reduction of NO x by NH 3 | |
| CN110773150B (en) | Composite oxide, preparation thereof and application of composite oxide as carbon particle combustion catalyst | |
| CN106040287A (en) | Exhaust gas purification catalyst | |
| CN112007654A (en) | Low-temperature sulfur-resistant denitration catalyst and preparation method and application thereof | |
| EP2948242B1 (en) | An ammonia oxidation catalyst for the production of nitric acid based on metal doped yttrium ortho cobaltate | |
| CN108404906B (en) | Nano-rod-shaped manganese-chromium composite oxide low-temperature denitration catalyst and preparation method thereof | |
| EP3296015A1 (en) | Use of vanadates in oxidation catalysts | |
| CN111036231B (en) | Sulfur-resistant alkali-resistant metal low-temperature denitration catalyst and preparation method and application thereof | |
| JP5971136B2 (en) | Carbon monoxide oxidation catalyst, method for producing the same, and method for removing carbon monoxide from gas | |
| JP2017503634A (en) | Use of mixed oxides as oxygen storage components |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |