Title:
COMPOSITE MATERIAL OF STRONTIUM-DOPED ORDERED MESOPOROUS LANTHANUM MANGANITE LOADED WITH PRECIOUS METAL PALLADIUM, AND PREPARATION METHOD THEREFOR AND USE THEREOF IN CATALYTIC OXIDATION OF TOLUENE
Document Type and Number:
WIPO Patent Application WO/2022/089669
Kind Code:
A1
Abstract:
A composite material of strontium-doped ordered mesoporous lanthanum manganite loaded with the precious metal palladium, and a preparation method therefor and a use thereof in catalytic oxidation of toluene. La(NO3)3 · 6H2O, Mn(NO3)2, and Sr(NO3)2 are used as a lanthanum source, a manganese source and a strontium source, a silicon template molecular sieve is used as a hard template, and citric acid is used as a complexing agent. By means of evaporation, drying, calcination, and sodium hydroxide solution etching, an La1-xSrxMnO3 nanotube material is obtained. The La1-xSrxMnO3 is taken as a carrier, a sodium tetrachloropalladate metal precursor is added, and by means of agitation and thermal evaporation of the solvent, and hydrogen gas reduction and calcination, an La1-xSrxMnO3 nanotube composite material loaded with palladium is obtained. The introduction of strontium in the Pd@La-1-xSrxMnO3 composite material of the present invention increases the content of tetravalent manganese, thereby promoting catalytic oxidation of toluene, and making possible high-efficiency catalytic oxidation of toluene at a lower temperature. The invention has good prospects for application in degrading the pollutant gas toluene emitted during industrial production and life.
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Inventors:
LU JIANMEI (CN)
CHEN DONGYUN (CN)
CHEN DONGYUN (CN)
Application Number:
PCT/CN2021/141006
Publication Date:
May 05, 2022
Filing Date:
December 23, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
B01J23/656; B01J23/34; B01J32/00; B01J35/00
Foreign References:
| CN112337461A | 2021-02-09 | |||
| CN105289602A | 2016-02-03 | |||
| CN1947834A | 2007-04-18 | |||
| CN106410226A | 2017-02-15 | |||
| CN106881096A | 2017-06-23 | |||
| CN104607201A | 2015-05-13 | |||
| US20150217275A1 | 2015-08-06 |
Other References:
HUANG XUEHUI; NIU PENGJU; LI MING; LIAO HUI; SHANG XIAOHUI: "Structures and properties of La0.8Sr0.2MnO3+σ-z SBA-15 (z=0, 1, 2, 4) perovskite catalysts", WUHAN UNIVERSITY OF TECHNOLOGY. JOURNAL (MATERIAL SCIENCE EDITION), WUHAN LIGONG DAXUE,WUHAN UNIVERSITY OF TECHNOLOGY, CN, vol. 33, no. 1, 31 January 2018 (2018-01-31), CN , pages 23 - 29, XP036408622, ISSN: 1000-2413, DOI: 10.1007/s11595-018-1780-5
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD (CN)
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