文献类型：专利

英文题名：Preparation of polyoxymethylene dimethyl ether involves performing condensation reaction of formaldehyde and dimethyl ether with presence of catalyst

作者：FANG D;LIU D;TANG B;ZHANG J

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN103508859-B

公开日：2015-07-15

语种：英文

收录：DERWENT

摘要：NOVELTY - A polyoxymethylene dimethyl ether is prepared by performing condensation reaction of formaldehyde and dimethyl ether with presence of catalyst in which catalyst is supported catalyst, main active component of supported catalyst is molybdenum and/or oxide, cobalt and/or oxide, and niobium and/or oxide, carrier is gamma -aluminum oxide, and supported catalyst contains 0-25 wt.% molybdenum and/or oxide, 0-10 wt.% cobalt and/or oxide, 0-15 wt.% silver and/or oxide, and balance carrier. USE - Preparation of polyoxymethylene dimethyl ether (claimed). ADVANTAGE - Preparation process uses good activity and high selectivity catalyst. DETAILED DESCRIPTION - A polyoxymethylene dimethyl ether of formula (CH3O(CH2O)x(CH3)) is prepared by performing condensation reaction of formaldehyde and dimethyl ether with presence of catalyst in which catalyst is supported catalyst, main active component of supported catalyst is molybdenum and/or oxide, cobalt and/or oxide, and niobium and/or oxide, carrier is gamma -aluminum oxide, and supported catalyst contains 0-25 wt.% molybdenum and/or oxide, 0-10 wt.% cobalt and/or oxide, 0-15 wt.% silver and/or oxide, and balance carrier. x=3-4.