Copper-loading catalyst capable of oxidizing the benzene to phenol using hydrogen peroxide as oxidant, preparation method and use thereof

Abstract

The invention relates to a copper-carried catalyst used for catalyzing hydrogen peroxide or oxidizing benzene to phenol, the preparation and the application thereof. Phenol is an important chemical raw material and also a precursor for preparing Bisphenol A, carbonic ester, phenolic resin, polycaprolactam, detergents, fungicides, herbicides, dyes, adhesives, antioxidants and a plurality of other compounds. Industrially, the demand of the phenol is great, and the world demand exceeds 6.6 multiplied by 10<7> tons per year and increases at the speed of 7 percent to 10 percent annually. A plurality of synthetic routes of the phenol are developed to meet the increasing demand of the phenol. The catalyst takes SBA-16 meso-porous molecular sieve as a carrier and carries transition metal copper, the content of which is 4 percent to 10 percent of the weight of the carrier. The catalyst is applied in the chemical field, namely, oxidizing benzene to phenol directly.

Description

Technical field:

[0001] The invention relates to a copper catalyst for direct oxidation of benzene to phenol by catalytic hydrogen peroxide, preparation and application of the catalyst. Background technique:

[0002] Phenol is an important chemical raw material. It is the precursor of bisphenol A, carbonate, phenolic resin, nylon-6, detergent, fungicide, herbicide, dye, adhesive, antioxidant and many other compounds. The demand for phenol is very large, and the world demand has exceeded 6.6×10 7 tons / year, and grow at a rate of 7%-10% every year. In order to meet the increasing demand for phenol, many synthetic routes of phenol have been developed.

[0003] In recent years, new progress has been made in the research on the synthetic route of phenol. According to the reaction process, the synthesis methods of phenol can be generally divided into two categories: multi-step synthesis method and one-step synthesis method. The multi-step synthesis methods mainly include cumen...