(CN107497479) The invention relates to a method for preparation of methyl methoxyacetate from a beta molecular sieve synthesized with cordierite as the carrier. The method includes: taking a cordierite ceramic honeycomb as the carrier, daubing a silicon source to the carrier surface by ultrasonic impregnation method, conducting drying and roasting, then stirring the obtained substrate, an aluminum source, an alkali solution and a template agent at normal temperature for certain period of time, transferring the mixed solution into a stainless steel hydrothermal synthesis kettle with a polytetrafluoroethylene liner, also performing mesoporous modification on the synthesized Hbeta/cordierite molecular sieve with acid and alkali solution respectively, and applying the synthesized molecular sieve to methylal carbonylation reaction to prepare methyl methoxyacetate. Compared with the Hbeta/cordierite molecular sieve, the molecular sieve subjected to mesoporous modification can achieve obviously increased methylal conversion rate, and the product methyl methoxyacetate has obviously improved mass selectivity. The method has the advantages of simple process, convenient raw material sources, few by-product, simple reaction aftertreatment and small environmental pollution, and provides a new thinking and method for large-scale industrial production.
最新评论
暂无评论。