Preparing method and application of catalyst

Abstract

The invention relates to a preparing method and application of a catalyst. The catalyst comprises, by weight, 50-60 parts of raw light-rare-earth mineral powder containing lanthanum and cerium, 30-40 parts of raw heavy-rare-earth mineral powder containing yttrium, 32-38 parts of micro silicon powder, 17-19 parts of zirconium oxide, 20-24 parts of sodium borate, 1-3 parts of boron nitride, 0.2-0.3 part of titanium carbide, 0.4-0.5 part of tantalum carbide and 1-1.5 parts of addition agent; the addition agent is one or several of boric acid, strontium fluoride, calcium fluoride and aluminum fluoride. The preparing method includes the following steps that 1, the addition agent is subjected to dry ball grinding for 2 h-10 h; 2, the addition agent subjected to dry ball grinding and other materials are put into a bi-conical mixing machine to be fully mixed, and the mixing time is 20 h-40 h; 3, the mixture is screened through a 200-mesh screen and packaged, and the catalyst is obtained. Compared with the prior art, the catalyst is unique in component and simple in production technology; as rare earth elements are adulterated, the activity of the catalyst can be enhanced, the heat stability of the finished product can be improved, and the service life of the finished product can be prolonged.

Description

technical field [0001] The invention relates to a composition, in particular to a preparation method and application of a catalyst. Background technique [0002] In a chemical reaction, a substance that can change the chemical reaction rate of the reactant (both increase and decrease) without changing the chemical balance, and whose quality and chemical properties do not change before and after the chemical reaction is called a catalyst (a solid catalyst is also called a catalyst). called catalyst). According to statistics, more than 90% of industrial processes use catalysts, such as chemical, petrochemical, biochemical, and environmental protection. There is also a saying that a catalyst is involved in a chemical reaction. In a general chemical reaction, the role of the catalyst is to reduce the activation energy required for the reaction to occur, essentially turning a relatively difficult reaction into two easily occurring chemical reactions (the opposite is called inh...

AI Technical Summary

Problems solved by technology

[0003] Catalysts are also needed in the production process of insulation materials. The participation of catalysts can greatly improve the high-temperature resistance of finished products, but the current market is basically blank for such high-temperature-resistant catalysts.