New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.
Robust acidic pseudo-ionic liquid catalyst with self-separation ability for esterification and acetalization
作者:Yingxia Shi、Xuezheng Liang
DOI:10.1007/s11696-019-00693-1
日期:2019.6
The novel acidic pseudo-ionic liquidcatalyst with self-separation ability has been synthesized through the quaternization of triphenylphosphine and the acidification with silicotungstic acid. The pseudo-IL showed high activities for the esterification with average conversions over 90%. The pseudo-IL showed even higher activities for acetalization than traditional sulfuric acid. The homogeneous catalytic
PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY LIQUID PHASE HYDROGENOLYSIS OF CYCLIC ACETALS OR CYCLIC KETALS
申请人:Billodeaux Damon Ray
公开号:US20120330069A1
公开(公告)日:2012-12-27
A liquid phase hydrogenolysis of acetal compounds such as cyclic acetals and cyclic ketals are fed to a reaction zone and reacted in the presence of a noble metal catalyst supported on a carbon or silica support to make hydroxy ether mono-hydrocarbons in high selectivity, without the necessity to use acidic co-catalysts such as phosphorus containing acids or stabilizers such as hydroquinone.
[EN] PROCESS FOR MAKING POLYOL ETHERS<br/>[FR] PROCÉDÉ POUR LA FABRICATION D'ÉTHERS DE POLYOLS
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2011104719A1
公开(公告)日:2011-09-01
The present invention generally relates to a process for making polyol ethers by reacting a polyol and a carbonyl compound together in the presence of hydrogen gas and a bimetal palladium hydrogenation catalyst on a carbon support.