Preparation method of ternary copper catalyst with high specific surface area

Abstract

The invention relates to the field of copper catalysts, particularly to a preparation method of a ternary copper catalyst with a high specific surface area. The method comprises:1) adding excessive metal copper micro-powder into a copper solution, reacting for a certain time, adding an alkali liquor to adjust the pH value so as to separate out precipitate, filtering, and separating to obtain solidparticles; 2) introducing a protective gas into a ball mill to form a protective atmosphere, placing the obtained solid particles and an acidic auxiliary agent into the ball mill, and carrying out medium-temperature ball milling to obtain an intermediate; and 3) keeping the protective atmosphere, and continuously carrying out heating and ball-milling on the intermediate to obtain the ternary copper catalyst with the high specific surface area. According to the invention, the prepared ternary copper catalyst has extremely high specific surface area so as to achieve excellent catalytic effect.

Description

technical field [0001] The invention relates to the field of copper catalysts, in particular to a preparation method of a high specific surface area ternary copper catalyst. Background technique [0002] Copper and its compounds are classic catalysts for the direct synthesis of methylchlorosilanes. The copper catalyst used to synthesize methylchlorosilane by the direct method initially uses electrolytic copper powder. Due to the compact surface and small specific surface area of ​​electrolytic copper powder, it is difficult to form active centers in the reaction, resulting in low catalytic activity. In recent years, those skilled in the art have improved copper-based catalysts, and reported porous cubic Cu particles, mesoporous Cu 2 New catalysts such as O microspheres, flower-like and dandelion-like CuO microspheres and their preparation processes were used as catalysts in the synthesis of organosilicon monomers, and their catalytic performance was tested. Because these c...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the current problems of cumbersome preparation of ternary copper catalysts, high energy consumption and limited yield, and the prepared ternary copper catalysts have relatively large particle size and small specific surface area, the present invention provides a high specific surface area ternary copper catalyst. Preparation method of copper catalyst

Images