Oxidation of Thiophenes over Silica Gel in Hydrogen Peroxide/Formic Acid System  

硅胶催化双氧水甲酸氧化噻吩类化合物的研究

作　　者：陈兰菊 郭绍辉 赵地顺 

出　　处：《Chinese Journal of Chemical Engineering》2006年第6期835-838,共4页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (No.20276015) and the Natural Science Foundation of Hebei Province (No.203364).

摘　　要：Thiophene (C4H4S) and 3-methylthiophene(3-MC4H4S) are typical thiophenenic sulfur compounds that exist in fluid catalytic cracking (FCC) gasoline. Oxidation of C4H4S and 3-MC4H4S were conducted in hydrogen peroxide (H2O2) and formic acid system over a series of silica gel loaded with metal oxide. The silica gel loaded with copper and cobalt (1:1) oxide was found very active for the model compound oxidation using H2O2/formic acid, while the silica gel unloaded with metal oxide was less active. The sulfur removal rate of thiophenes was different as solvent was changed. And the conversation of C4H4S and 3-MC4H4S was improved at higher temperature,but reduced when olefin was added. The sulfur removal rate of model sulfur compounds was enhanced when the phase transfer catalyst emulsifier polyethylene glycol octyl phenyl ether or tetrabutylammonium bromide(TBAB)in a H2O2 and formic acid system with the addition of TBAB, a bromine substitution trend appeared in the oxidation of thiophenes, suggesting the influence of TBAB.

关 键 词：OXIDATIVE desulfurization  silica gel  thiophene  3-METHYLTHIOPHENE 

分 类 号：TQ-55[化学工程]