文献类型：期刊文献

英文题名：Core-Shell Zeolite Composite with Silicalite-1/NaY Structure for the Adsorption Desulfurization of Dimethyl Disulfide from Methyl tert-Butyl Ether

作者：Yang, Chao[1];Meng, Xuan[1];Yi, Dezhi[1];Ma, Zhiming[1];Liu, Naiwang[1];Shi, Li[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：57

期号：48

起止页码：16358

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20184906204315);WOS:【SCI-EXPANDED(收录号:WOS:000452693700023)】；

基金：This project was financially supported by the National Science Foundation for Young Scientists of China (no. 21706065), the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-18C02), the China Postdoctoral Science Foundation (no. 2017M621389), the Shanghai Sailing Program (no. 18YF1406300), and the Explore and Research Foundation for Youth Scholars of Ministry of Education of China (no. 222201814011).

语种：英文

外文关键词：Hydrothermal synthesis - Silicate minerals - Sodium alloys - Zeolites - Binary alloys - Sulfur compounds - Ethers - Molar ratio - Adsorption - Shells (structures)

摘要：Desulfurization of dimethyl disulfide (DMDS) from methyl tert-butyl ether (MTBE) has been studied on the silicalite-1/NaY core-shell composites. By changing the mass ratio of tetraethyl orthosilicate (TEOS)/NaY, the silicalite-1 shell synthesis condition was conducted at the mass ratio of TEOS/tetrapropylammonium hydroxide (TPAOH)/ethanol (EtOH)/H2O = (10, 15, 20, 25, 30 g):19 g:17 g:87 g ((0.048, 0.072, 0.096, 0.12, 0.144):0.0234:0.369:4.8293 in molar ratio, where the mass of NaY zeolite was quantified to 5 g) by a hydrothermal synthesis at 180 degrees C for 24 h. Results showed that when the mass ratio of TEOS/TPAOH/EtOH/H2O/NaY = 20 g:19 g:17 g:87 g:5 g, the silicalite-1 coating could be dispersed and covered on the surface of NaY well (the thickness of silicalite-1 shell ranged from 100 to 400 nm) with the best sulfur adsorption capacity as 20.711 mg(s)/g(adsorbent center dot) The shape-selective adsorption mechanism of desulfurizing DMDS from MTBE on these core-shell composites was also elaborated.