Catalytic ,Synthesis of n-Butyraldehyde 1,2-propanediol Acetal over H4SiW12O40-PAn

• 来源期刊: 中国高等学校学术文摘·化学
• 关键词: n-butyraldehyde 1 2-propanediol acetal 12-tungstosilicic acid polyaniline catalyst acetalation
• 年，卷（期）: 2006,（1）
• 页码范围: 82-85
• 页数: 4页
• 语种: 英文

摘要

A new environmentally friendly catalyst,H4Si W12O40-polyaniline(PAn),was prepared,and n-butyraldehyde 1,2-propanediol acetal was synthesized from nbutyraldehyde and 1,2-propanediol in the presence of HaSiW12Oao-PAn.The influence factors of the synthesis were discussed,and the best reaction conditions were found:the molar ratio of n-butyraldehyde to 1,2-propanediol is 1:1.5,the amount of catalyst used is 1.2% of feed stock,and the reaction time is 1.0 h.H4SiW12Oao-PAn is an excellent catalyst for synthesizing n-butyraldehyde 1,2-propanediol acetal,and the yield can reach more than 95.2%.