Monatomic catalyst as well as preparation method and application thereof

A catalyst and atomic technology, applied in the field of single-atom catalyst preparation

Inactive Publication Date: 2020-10-20
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in general, there are still few studies on single-atom catalysts. Using different materials to synthesize single-atom catalysts, what kind of coordination environment and catalytic properties they can have, and which fields of catalytic applications they can be used for, still need a lot of exploration.

Method used

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  • Monatomic catalyst as well as preparation method and application thereof
  • Monatomic catalyst as well as preparation method and application thereof
  • Monatomic catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a single-atom catalyst, including a carrier and an active component loaded on the carrier, wherein the carrier is graphite phase carbon nitride, and the active component is single-atom palladium. The preparation method of this single-atom catalyst comprises the following steps:

[0042] Synthesis of graphite-phase carbon nitride: put the porcelain boat with urea into a tubular heating furnace, and calcinate at 550°C for 2 hours, and the heating rate of the calcination temperature is 5°C / min to obtain graphite-phase carbon nitride;

[0043] Ultrasonic mixing: disperse graphite phase carbon nitride in deionized water and sonicate for 1 hour, then add sodium tetrachloropalladate solution and continue to sonicate for 1 hour to form a mixed solution, and magnetically stir the mixed solution at room temperature for 12 hours; , the mass ratio of graphite phase carbon nitride and sodium tetrachloropalladate is 1500:1-2500:1, and this step fully adsorbs ...

Embodiment 2

[0047] The difference between this example and Example 1 is that in this example, in the step of ultrasonic mixing, the mixed solution was magnetically stirred at room temperature for 8 hours.

Embodiment 3

[0049] The difference between this example and Example 1 is that in this example, in the step of ultrasonic mixing, the mixed solution was magnetically stirred at room temperature for 10 hours.

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Abstract

The invention relates to the technical field of catalysts, in particular to a monatomic catalyst as well as a preparation method and application thereof. The monatomic catalyst comprises a carrier andan active component loaded on the carrier, the active component is palladium single molecules, and the carrier is graphite-phase carbon nitride. Palladium is loaded on graphite-phase carbon nitride in a single molecule form to form the ultrathin two-dimensional nano-scale catalyst, and the catalyst has the advantages that the use amount of palladium is lower, and the palladium atom utilization rate can reach 100%.

Description

technical field [0001] The present application relates to the technical field of catalysts, in particular to a method for preparing a single-atom catalyst and its application. Background technique [0002] In the field of catalyst technology, the development of novel, efficient and cheap catalysts has always been the focus of research, and single-atom catalysts are a new class of catalytic materials that have emerged in recent years. At present, some studies have applied the chemical method of adsorption and reduction to prepare single-atom platinum-supported catalysts by loading platinum on the oxygen vacancies on the surface of iron oxide, and the catalysts showed very high activity and selectivity in the selective oxidation of carbon monoxide. sex. But in general, there are still few studies on single-atom catalysts. Using different materials to synthesize single-atom catalysts, what kind of coordination environment and catalytic properties they can have, and which field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J37/08C07C37/00C07C39/04C07C5/03C07C15/073C07F7/18
CPCB01J23/44B01J37/082C07C37/00C07C5/03C07F7/1804C07F7/188C07C2523/44Y02P20/52
Inventor 胡凤莲李智君王俊汪颖军于翠艳许涛冷雷朋任淼玉于彦龙刘娜林立君
Owner NORTHEAST GASOLINEEUM UNIV
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