文献类型：期刊文献

英文题名：Alkali-Treatment of Silicalite-1/CuY Core-Shell 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：2019

卷号：58

期号：4

起止页码：1613

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20190406413449);WOS:【SCI-EXPANDED(收录号:WOS:000457816000014)】；

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); China Postdoctoral Science Foundation (No. 2017M621389), Shanghai Sailing Program (No. 18YF1406300), and Explore and Research Foundation for Youth Scholars of Ministry of Education of China (No. 222201814011).

语种：英文

外文关键词：Binary alloys - Ethers - Ion exchange - Sulfur compounds - Adsorption - Copper alloys - Desulfurization - Shells (structures) - Zeolites

摘要：NaOH treated silicalite-1/CuYOH core-shell composites were synthesized at the mass ratio of tetraethyl orthosilicate (TEOS)/ tetrapropylammonium hydroxide (TPAOH)/ethanol/H2O/CuY = 20 g (0.096 molar):19 g (0.0234 molar):17 g (0.369 molar):87 g (4.8293 molar):5 g to achieve the selective adsorption desulfurization of dimethyl disulfide (DMDS) from methyl tert-butyl ether (MTBE). As the core zeolite, CuY was obtained by Cu2+ ion-exchange on NaY. After alkali treatment, NaY zeolite was provided with more loading positions for silicalite-1 crystals owing to the desilication effect of NaOH. Results showed that the core-shell Y-OH-CuCl2 displayed the best performance in desulfurizing DMDS from MTBE with a sulfur adsorption capacity of 37.073 mg(s)/g(adsorbent) for the sake of its significant mass gain and compact silicalite-1 coatings. The preparation of silicalite-1/CuYOH core-shell composites and the shape selective adsorption mechanism of desulfurizing DMDS on these core-shell composites were expounded.