林产化学与工业2017，Vol.37Issue(3)：61-66,6.DOI:10.3969/j.issn.0253-2417.2017.03.008
磷钨酸季铵盐催化制备环氧化桐油甲酯及其性能研究
Synthesis and Properties of Epoxidized Tung Oil Methyl Ester from Tung Oil Methyl Ester with Quaternary Ammonium Phosphotungstate as Catalyst
摘要
Abstract
A quaternary ammonium phosphotungstates phase transfer catalyst (C12 H25C6H5N) 3 [PW4O16] was synthesized by using phosphotungstic,hydrogen peroxide(30％) and dodecylpyridinium chloride as feedstock.This phase transfer catalyst was used for the epoxidation of tung oil methyl ester(TOME) and manufacture the epoxidized tung oil methyl ester(ETOME).It was found that the system consist of phase transfer catalyst,TOME and hydrogen peroxide can be regarded as a homogeneous system and the reaction rate was accelerated.Effect of different conditions on the epoxidation reaction of methyl tung oil was investigated.Results showed that the optimum conditions were 50 ℃ reaction temperature,3 h reaction time,1.6:1 molar ratio of hydrogen peroxide to double bond and catalyst dosage was 3.0％.The epoxy value of ETOME can reach 4.9％ under these optimum condition.Thermogravimetric analysis showed that the descending order of thermal stability of the products was ETOME ＞ TO ＞ TOME.关键词
磷钨酸季铵盐/桐油甲酯/环氧化/相转移Key words
quaternary ammonium phosphotungstates/tung oil methyl ester/epoxidation/phase transfer分类
化学化工引用本文复制引用
郑敏睿,张猛,胡立红,薄采颖,周永红..磷钨酸季铵盐催化制备环氧化桐油甲酯及其性能研究[J].林产化学与工业,2017,37(3):61-66,6.基金项目
国家自然科学基金资助项目(31670577) （31670577）
中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2014QB021) （CAFYBB2014QB021）
