Catalyst for producing ethyl orthosilicate by silicon powder method and preparation method thereof

Abstract

The invention relates to a catalyst for producing ethyl orthosilicate by a silicon powder method and a preparation method thereof. The catalyst comprises the following components in percentage by weight: 20%-50% of cuprous oxide, 10%-40% of copper oxide, 10%-40% of copper powder and 10%-30% of catalyst carrier. The preparation method comprises the following steps of: uniformly mixing the active components such as cuprous oxide, copper oxide and copper powder according to the composition of the catalyst; preparing a 30-40% alcohol or aqueous solution of the catalyst carrier; and adding the mixed active components in the alcohol solution of the catalyst carrier, stirring for 1-2 hours, then dripping a small amount of distilled water, continuously stirring for 1-24 hours, and then filtering,thus obtaining filter residue; and drying the filter residue at the temperature of 70-120 DEG C, and roasting for 8-24 hours with air isolation at the temperature of 400-700 DEG C, thus obtaining thecatalyst. The catalyst has the characteristics of high activity and stability, long service life and capability of being utilized repeatedly for multiple times.

Description

technical field

[0001] The invention proposes a novel catalyst used in the production of ethyl orthosilicate by a silicon powder method and a preparation method thereof. Background technique

[0002] Ethyl orthosilicate is an important chemical product, mainly used in the synthesis of organic silicon intermediates, crosslinking agents for room temperature vulcanized silicone rubber, chemical-resistant coatings, heat-resistant coatings, and fire-resistant adhesives and precision casting etc. Phosphor powder can be produced from very fine silicon oxide powder produced after complete hydrolysis of tetraethyl orthosilicate. There are many ways to prepare tetraethyl orthosilicate, but so far there are only two routes for real industrialization, namely silicon tetrachloride method and silicon powder method. Most manufacturers in my country use the silicon tetrachloride method, that is, the reaction of ethanol and silicon tetrachloride to prepare ethyl silicate. The process is c...