Noble metal ruthenium monatomic supported catalyst as well as preparation method and application thereof

A ruthenium-based catalyst and catalyst technology, applied in the direction of catalysts, carbon compound catalysts, chemical instruments and methods, etc., can solve the problems of narrow absorption band of photocatalysts, fast recombination of photogenerated charges, poor product selectivity, etc. Industrialization and cost-saving effects
CN113617367AActive Publication Date: 2021-11-09INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
Publication Date
2021-11-09

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Abstract

The invention discloses a noble metal ruthenium monatomic supported catalyst as well as a preparation method and application thereof. The catalyst comprises a sulfide carrier and ruthenium dispersed on the surface of the sulfide carrier in a monatomic form, and the proportion of single ruthenium atoms is 0.01-10% by mass of the ruthenium-based catalyst. The CO2 adsorption capacity, the photo-generated charge separation capacity, the light absorption capacity, the photo-thermal conversion capacity and other properties of the catalyst are obviously improved. The preparation method has the advantages of simple and rapid preparation and cost saving, and can realize monatomic dispersion of high-specific-gravity noble metal ruthenium on the surface of cadmium sulfide. According to the monatomic dispersed ruthenium noble metal catalyst prepared by the method, the dispersity of noble metal is improved, the use cost of the noble metal is reduced, and the photo-thermal catalytic reduction of CO2 and high CH4 selectivity of the catalyst are ensured.
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Description

technical field

[0001] The invention belongs to CO 2 The technical field of reduction catalyst materials, specifically relates to a noble metal single-atom supported catalyst and its preparation method and application. Background technique

[0002] With the rapid development of industrial society, the increasing consumption of fossil energy not only causes CO 2 The rapid increase of emissions has caused a series of environmental problems such as the "greenhouse effect", and also caused a shortage of non-renewable resources. Therefore, how to utilize CO 2 "Turning waste into treasure" has become one of the hot topics in the world.

[0003] Currently, catalytic reduction of CO 2 The main methods are electrochemistry, bioelectrochemistry, thermal catalysis and photocatalysis. Among them, the thermal catalytic method requires a higher temperature for reaction, which increases energy consumption, and at the same time causes sintering and deactivation of the catalyst, shorten...

Claims

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