Titanium silicalite molecular sieve, and nano-gold-loaded titanium silicalite molecular sieve catalyst and preparation method therefor and use thereof

Abstract

A titanium silicalite molecular sieve has a micropore specific surface area of 320-500 m2/g, a micropore volume of 0.1-0.4 cm3/g, a mesopore specific surface area of 50-100 m2/g, a mesopore volume of 0.075-0.1 cm3/g, and a particle size of 100-250 nm. Its micropore specific surface area accounts for 50-90% of the total specific surface area. A catalyst contains the titanium silicalite molecular sieve carrier and is loaded with nano-gold particles. The catalyst has a micropore volume of 0.06-0.4 cm3/g and a particle size of 100-250 nm. The catalyst is prepared by subjecting the titanium silicalite molecular sieve to an alkaline treatment with an aqueous aliphatic amine solution and then loading same with nano-gold particles. The catalyst is used for an olefin epoxidation reaction, a cycloolefin epoxidation reaction, a phenol hydroxylation reaction, and a cyclohexanone ammoximation reaction.

Dependencies are inferred from the claim text.