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Method for preparing palladium single-atom double-active-site full-hydrolysis catalyst

A hydrolysis catalyst and dual-activity technology, applied in chemical instruments and methods, physical/chemical process catalysts, oxygen preparation, etc., can solve the problems of single-atom single function, difficult to use, difficult single-atom reactive active sites, etc., to achieve Novel shape, high product purity and cost reduction

Inactive Publication Date: 2019-11-22
辽宁星空新能源发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the carrier used to prepare single atoms is mainly a single carrier. The single atom prepared by this single carrier has a single function and is difficult to use in the field of multifunctional catalysis.
Therefore, it is difficult to prepare a single catalyst with single-atom reactive sites of both supports.

Method used

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  • Method for preparing palladium single-atom double-active-site full-hydrolysis catalyst
  • Method for preparing palladium single-atom double-active-site full-hydrolysis catalyst
  • Method for preparing palladium single-atom double-active-site full-hydrolysis catalyst

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Embodiment 1

[0024] The invention provides a method for preparing an iridium monoatomic double active site full hydrolysis catalyst, the method uses a metal organic framework structure ZIF-67 as a carrier, ethanol as a solvent, and C 10 h 14 o 4 Pd is evenly mixed, suction filtered, dried, and calcined to form a two-site full hydrolysis catalyst in which single-atom Pd is uniformly dispersed on nitrogen-doped carbon and metal cobalt, and the specific operation steps are as follows:

[0025] At room temperature, disperse 99.5g metal-organic framework structure ZIF-67 in 100% ethanol for 60 minutes, and then filter it on the filter membrane; dry the filtered ZIF-67 and the filter membrane together, and the drying temperature is 80 ℃; put 0.5gC 10 h 14 o 4 Dissolve Pd in ​​0.5L of 100% ethanol, and ultrasonically disperse for 30 minutes; soak the dried filter membrane in the above C 10 h 14 o 4 Put in the Pd solution for 10 minutes, then take it out, continue drying, the drying tempera...

Embodiment 2

[0028] The invention provides a method for preparing an iridium monoatomic double active site full hydrolysis catalyst, the method uses a metal organic framework structure ZIF-67 as a carrier, ethanol as a solvent, and C 10 h 14 o 4 Pd is evenly mixed, suction filtered, dried, and calcined to form a two-site full hydrolysis catalyst in which single-atom Pd is uniformly dispersed on nitrogen-doped carbon and metal cobalt, and the specific operation steps are as follows:

[0029] At room temperature, disperse 99g of metal-organic framework structure ZIF-67 in 100% ethanol for 60 minutes, and then filter it on the filter membrane; dry the filtered ZIF-67 and the filter membrane together, and the drying temperature is 80°C ; put 1gC 10 h 14 o 4 Dissolve Pd in ​​1L of 96% ethanol, and ultrasonically disperse for 30 minutes; soak the dried filter membrane in the above C 10 h 14 o 4 Put in the Pd solution for 10 minutes, then take it out, continue drying, the drying temperatur...

Embodiment 3

[0031] The invention provides a method for preparing an iridium monoatomic double active site full hydrolysis catalyst. The method uses a metal organic framework structure ZIF-67 as a carrier, ethanol as a solvent, and C 10 h 14 o 4 Pd is uniformly mixed, suction filtered, dried, and calcined to form a two-site full hydrolysis catalyst in which single-atom Pd is uniformly dispersed on nitrogen-doped carbon and metal cobalt, and the specific operation steps are as follows:

[0032] At room temperature, disperse 99g of metal-organic framework structure ZIF-67 in 100% ethanol for 60 minutes, and then filter it on the filter membrane; dry the filtered ZIF-67 and the filter membrane together, and the drying temperature is 80°C ; put 1gC 10 h 14 o 4 Dissolve Pd in ​​1L of 100% ethanol, and ultrasonically disperse for 30 minutes; soak the dried filter membrane in the above C 10 h 14 o 4 Put in the Pd solution for 10 minutes, then take it out, continue drying, the drying temper...

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Abstract

The invention provides a method for simply and rapidly preparing a material in which monatomic palladium is simultaneously dispersed on two sites which are nitrogen-doped carbon and cobalt metal particles. According to the method, the huge challenge that a single atom in a high-temperature reaction is easy to agglomerate is overcome, and the single atom Pd is prepared by taking ZIF-67 as a carrierand is dispersed on nitrogen-doped carbon and cobalt metal particles. Compared with the traditional commercial palladium carbon and palladium oxide, the method for preparing the monatomic material has the advantages of low noble metal consumption, high catalytic efficiency, low cost, simple operation, mildness, easiness in control, energy conservation, environmental protection, high product purity and novel morphology. Besides, the prepared product is palladium single atoms, can form single atoms on nitrogen-doped carbon and cobalt at the same time, provides two types of catalytic sites, andcan meet the requirements of catalyzing oxygen and hydrogen generation at the same time.

Description

technical field [0001] The invention relates to the technical field of preparation of sub-nanometer materials, in particular to a method for preparing a palladium monoatomic double active site perhydrolysis catalyst. Background technique [0002] Catalyst, as the core of catalytic technology, can effectively regulate the path of chemical reactions, and obtain target products with high selectivity under milder conditions. Catalysts and reactants are usually in different phases in industrial catalysis, so the catalytic process mainly involves heterogeneous catalysis. Among them, supported metal catalysts are widely used in the production process of important chemical products due to their high catalytic activity and selectivity. For supported metal catalysts, the size of metal particles is one of the most important factors affecting its catalytic performance. The ratio of surface atoms to the total number of atoms increases dramatically with smaller particle size, creating m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C01B3/04C01B13/02
CPCB01J27/24C01B3/042C01B13/02C01B2203/0277C01B2203/1064Y02E60/36Y02P20/10
Inventor 赖伟鸿李用成宫毅涛刚勇李亚书李东祥王绍才
Owner 辽宁星空新能源发展有限公司
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