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Cu-Cu2O-CuO ternary copper-based solid solution catalyst and its preparation method

A cu-cu2o-cuo, ternary copper technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of uneven distribution of active sites, uncontrollable defect concentration, etc., to achieve The reaction conditions are easy to master, easy to produce on a large scale, and avoid the effect of easy particle agglomeration

Inactive Publication Date: 2014-12-24
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, at present, most of the different methods of preparing catalysis are through physical mechanical stirring, crushing, and ball milling methods published in patents. These methods only form defects and active sites through friction, extrusion, and collision between particles, and the concentration of defects is uncontrollable. Uneven distribution of active sites

Method used

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  • Cu-Cu2O-CuO ternary copper-based solid solution catalyst and its preparation method
  • Cu-Cu2O-CuO ternary copper-based solid solution catalyst and its preparation method
  • Cu-Cu2O-CuO ternary copper-based solid solution catalyst and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 1.22g (12.2wt%) of metal copper powder, 5.66g (56.6wt%) of cuprous oxide, and 3.12g (31.2wt%) of copper oxide as the reaction raw materials, and treat them at 600°C for 8h in a protective atmosphere, and then Aged at 400°C for 8 hours, the product was pulverized and ball milled to obtain a ternary copper-based solid-solution catalyst; the composition of the obtained copper catalyst was analyzed by chemical method: 0.5% Cu, 71.1% Cu 2 O and 28.4% CuO.

[0029] The prepared catalyst material was tested by XRD on X'Pert PRO MPD multifunctional X-ray diffractometer produced by Panalytical Company (Panalytical) in Holland.

[0030] The surface morphology of the prepared catalyst material was observed with a JSM6700 field emission scanning electron microscope produced by JEOL Ltd.

[0031] The particle size analysis of the catalyst material prepared in the above examples was carried out on a Dandong Baite BT-9300Z laser particle size distribution analyzer.

[0032] fig...

Embodiment 2

[0035] Weigh 4.00g (40.0wt%) of metal copper powder, 3.66g (36.6wt%) of cuprous oxide, and 2.34g (23.4wt%) of copper oxide as reaction raw materials, and treat them at 900°C for 0.5h in a protective atmosphere, and then Aging at 400°C for 2 hours, the product was pulverized and ball milled to obtain a ternary copper-based solid-solution catalyst; the composition of the obtained copper catalyst was analyzed by chemical method: 18.1% Cu, 70.9% Cu 2 O and 11.0% CuO. The particle diameters of the ternary copper catalysts are all less than 20 microns.

Embodiment 3

[0037] Weigh 1.22g (12.2wt%) of metal copper powder, 5.66g (56.6wt%) of cuprous oxide, and 3.12g (31.2wt%) of cupric oxide as the reaction raw materials. In a protective atmosphere, treat at 1000°C for 1h, and then Aged at 400°C for 15 hours, the product was pulverized and ball milled to obtain a ternary copper-based solid-solution catalyst; the composition of the obtained copper catalyst was analyzed by chemical method: 94.4% Cu, 5.1% Cu 2 O and 0.5% CuO. The particle diameters of the ternary copper catalysts are all less than 20 microns.

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Abstract

The invention relates to the organosilicon monomer synthesis field, and particularly relates to a Cu-Cu2O-CuO ternary copper-based solid solution catalyst and its preparation method. The method comprises the following steps of: 1) taking a mixture composed of 0.5-40wt% of metal copper powder and 20-80wt% of copper oxide as a raw material, conducting heat treatment at a temperature of 600-1000DEG C for 0.5-12h under inert gas protection, and then carrying out ageing at a temperature of 300-600DEG C for 1-15h so as to obtain a ternary copper-based solid solution; and 2) subjecting the ternary copper-based solid solution from step 1) to shattering and milling to obtain the Cu-Cu2O-CuO ternary copper-based solid solution catalyst. The copper-based solid solution catalyst prepared in the invention shows high dimethyldichlorosilane selectivity and silicon power raw material conversion rate.

Description

technical field [0001] The present invention relates to the field of organosilicon monomer synthesis, specifically, the present invention relates to a Cu-Cu 2 O-CuO ternary copper-based solid-solution catalyst and a preparation method thereof. Background technique [0002] Organosilicon compounds are both inorganic materials (Si-O) and organic materials (Si-CH 3 ) performance, with high and low temperature resistance, oxidation resistance, corrosion resistance, electrical insulation, stability and physiological inertia and other excellent characteristics, not only in a wide range of civilian uses, such as baby pacifiers, contact lenses, artificial organs, sealing adhesives Agents, etc., but also have special military applications. Silicone materials will be used in large quantities in military projects such as large aircraft, high-speed rail, submarines, and satellites. The upstream of the organic silicon industry chain uses Si powder and monochloromethane (MeCl) as raw ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/72B01J23/80B01J23/835B01J27/18B01J37/08C07F7/16
Inventor 苏发兵王莹利宋莲英车红卫贾昭翟世辉朱德洪
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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