Catalytic adsorptive desulfurization of mercaptan,sulfide and disulfide using bifunctional Ti-based adsorbent for ultra-clean oil

作     者：Cuiting Yang Bowen Wu Zewei Liu Guang Miao Qibin Xia Zhong Li Michael J.Janik Guoqing Li Jing Xiao Cuiting Yang;Bowen Wu;Zewei Liu;Guang Miao;Qibin Xia;Zhong Li;Michael J.Janik;Guoqing Li;Jing Xiao

作者机构：School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640China Department of Chemical EngineeringPennsylvania State UniversityPA 16802USA 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2022年第35卷第2期

页      面：25-34页

核心收录：

学科分类：081702[工学-化学工艺] 080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：provided by the National Natural Science Foundation of China (22022806, 21776097) Natural Science Foundation of Guangdong Province (2017A030312005) 

主　　题：Adsorption Catalysis Selectivity Ultra-deep desulfurization Transformer oil 

摘      要：Ultra-deep desulfurization of transformer oil is of great demand among power *** this work,the effective and deep removal of various types of organosulfurs,including mercaptan,sulfide and disulfide via catalytic adsorptive desulfurization(CADS)using bifunctional Ti-based adsorbent is *** to adsorptive desulfurization(ADS),dramatically improvement of the organosulfur uptakes were achieved under CADS *** equilibrium adsorption capacity at 5 μg∙g^(-1) S reached up to 15.7,33.4,11.6 and 11.9 mg∙g^(-1) for propyl mercaptan(n-PM),dimethyl sulfide(DMS),di-t-butyl disulfide(DTBDS)and dibenzyl disulfide(DBDS),which was 262,477,97 and 128 times to that of ADS process,respectively,and was the highest among the reported desulfurization ***,it achieved superior breakthrough capacity of 2050,530 and 210 ml F·(g A)^(-1) at the breakthrough S concentration of 1 μg∙g^(-1) of the commercial transformer oil S containing 10,50 and 150 μg∙g^(-1),*** effectiveness of CADS is associated to the transformation of sulfur species to higher polar sulfonic species with the assistance of mild oxidant,which can be readily captured by silanol groups on SiO2 through Hbonding *** excellent recyclability of the adsorbent can be realized through solvent washing or oxidative air *** work provides an effective and economic approach for the elimination of trace amount of mercaptan,sulfide and disulfide from transformer oil.