相转移催化氧化脱除噻吩的应用研究  

Application study of thiophene removal by phase transfer catalytic oxidation

作　　者：周二鹏[1] 赵地顺[1] 刘会茹[1] 王建龙[1] 李发堂[2] 

机构地区：[1]天津大学化工学院,天津300072 [2]河北科技大学理学院,河北石家庄050018

出　　处：《化学工程》2008年第4期34-36,共3页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(20276015)

摘　　要：以噻吩溶液为模型化合物,应用季铵盐类相转移催化剂,对FCC汽油相转移催化氧化-萃取脱硫工艺进行了系统研究。考察了相转移催化剂、氧化时间、氧化温度、氧化剂加入量等工艺条件对脱硫率的影响。研究结果表明,季铵盐相转移催化剂的阴阳离子对脱硫率有重要影响。以四丁基溴化铵(TBAB)为相转移催化剂,反应温度40℃,反应时间150 min,氧化剂用量为n(H2O2):n(S)=4,萃取剂为二甲基亚砜时脱硫率可达93.1%。Oxidative/extraction desulfurization of FCC gasoline by quaternary ammonium salt phase transfer catalyst was investigated with thiophene solution as model compound. The effects of phase transfer catalyst, reaction time, temperature, values of oxidant on desulfurization was studied. The study results show that the cation and anion of quaternary ammonium have influence on sulfur removal. The sulfur removal of thiophene was up to 93.1% under the conditions of n （H2O2 ）： n（S） =4 after 150 min reaction at 40 ℃ with dimethyl sulfoxide as extractant and tetrabutyl ammonium bromide as catalyst.

关 键 词：相转移催化剂 汽油 模型化合物 氧化 脱硫 

分 类 号：O643.32[理学—物理化学]