MULTI-SANDWICH COMPOSITE CATALYST, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF

WIPO Patent Application WO/2020/228779

A1

The present invention relates to the technical field of catalyst materials, in particular, to a multi-sandwich composite catalyst, a preparation method therefor and an application thereof. The present invention provides a preparation method for a multi-sandwich composite catalyst, comprising: sequentially depositing a first-layer oxide, a first active metal, an intermediate-layer oxide, a second active metal, and a surface-layer oxide on a template, and then sequentially performing roasting and reduction to obtain a multi-sandwich composite catalyst, wherein the first active metal and the second active metal are different types of active metals. According to the present invention, by alternately depositing oxides and active metals to form a multi-sandwich structure, the position of the active center and the spacing distance are accurately controlled. The results of embodiments show that the multi-sandwich composite catalyst prepared by the method provided by the present invention has a higher conversion rate than a catalyst having no intermediate transition layer when used in a catalytic reaction.

JP5863668	Reactor with gas supply at the bottom
WO/2008/060993	SELECTIVE HYDROGENATION PROCESSES USING FUNCTIONAL SURFACE CATALYST COMPOSITION
WO/2023/135351	PHOTOCATALYST FOR THE TREATMENT OF FLUIDS CONTAINING ORGANIC MATTER

QIN YONG (CN)
ZHANG BIN (CN)
WU HUIBIN (CN)
LIANG HAOJIE (CN)

PCT/CN2020/090259

November 19, 2020

May 14, 2020

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INST COAL CHEMISTRY CAS (CN)

B01J35/06; B01J23/89; B01J37/025; B01J37/34; C01B3/04; C07C209/36

CN110038590A	2019-07-23
CN105771972A	2016-07-20
CN105817270A	2016-08-03
CN101214444A	2008-07-09

BEIJING GAOWO LAW FIRM (CN)

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