表面活性剂对中间相炭微球分离过程的影响  

Influence of surfactants on separation in mesocarbon microbeads

作　　者：张琢[1] 郑义[1] 

机构地区：[1]上海应用技术学院材料科学与工程学院,上海201418

出　　处：《大连工业大学学报》2013年第6期453-456,共4页Journal of Dalian Polytechnic University

基　　金：国家自然科学基金资助项目(51074107)

摘　　要：以煤沥青为原料,采用聚合法制备中间相炭微球(MCMB),主要研究分离过程中非离子表面活性剂Tween20和阴离子表面活性剂十二烷基苯磺酸钠(SDBS)对MCMB分离过程的不同影响。研究结果表明,表面活性剂对制备中间相炭微球的关键生产工艺过程——分离过程产生非常积极的作用,在分离萃取剂中添加合适比例的非离子表面活性剂Tween20可大幅提高滤饼的渗透性,有效地改善分离效率;当溶剂中加入0.15%Tween20后,过滤时间明显减少,过滤效率可提高近25%,中间相炭微球的分离收率也得到较大幅度的提高。Mesocarbon microbeads （MCMB） were prepared by polymerization with coal pitch. Different effects of nonionic surfactants （Tween20） and anionic surfactants -- sodium dodecyl benzene sulfonate （SDBS） on MCMB separation process were investigated. Results show that the surfactants play a very positive role on the process of separating -- the key production process of mesophase microbeads preparation. It can greatly improve the permeability and the separation efficiency of the filter cake by adding appropriate proportion of non-ionic surfactants Tween20. The filtration time was reduced and the filtration efficiency could be increased nearly 25 % added 0.15 % Tween20, while the separation yield of MCMB was also improved greatly.

关 键 词：中间相炭微球 分离效率 Tween20 十二烷基苯磺酸钠(SDBS) 

分 类 号：TB383.1[一般工业技术—材料科学与工程]