Fast and low-temperature elimination of organic templates from SBA-15 using dielectric barrier discharge plasma  

作　　者：Lin WANG Junkang YAO Zheng WANG Hongqiao JIAO Jing QI Xiaoiing YONG Dianhua LIU 王林;姚军康;王政;焦洪桥;齐静;雍晓静;刘殿华(State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,People＇s Republic of China;State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,College of Chemistry and Chemical Engineering,Ningxia University,Yinchuan 750021,People＇s Republic of China;Coal to Liquids Chemical Research and Development Center,Shenhua Ningxia Coal Industry Group,Yinchuan 750411,People＇s Republic of China)

机构地区：[1]State Key Laboratory of Chemical Engineering, East China University of Science and Technology,Shanghai 200237, People's Republic of China [2]State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, People's Republic of China [3]Coal to Liquids Chemical Research and Development Center, Shenhua Ningxia Coal Industry Group,Yinchuan 750411, People's Republic of China

出　　处：《Plasma Science and Technology》2018年第10期1-5,共5页等离子体科学和技术（英文版）

基　　金：financially supported by National Natural Science Foundation of China (Nos. 21766026 and 21366026);the Leading Talent Project of Ningxia (No. KJT2016001);the National International Cooperation S & T Project of China (No. 2015DFA40660);the National First-Rate Discipline Construction Project of Ningxia (Chemical Engineering and Technology);the National Demonstration Center for Experimental Chemistry Education (Ningxia University)

摘　　要：Organic templates P-123 of mesoporous SBA-15 can be effectively removed in a few minutes （4 min） by using the dielectric-barrier discharge （DBD） plasma technique at ambient pressure and low gas temperature （around 130℃）. The mesoporous SBA-15 was characterized by FT-IR, 29Si solid sate NMR, TEM, XRD, TGA and N2 adsorption/desorption isotherms. The as-made SBA-15 treated with DBD plasma exhibited a larger surface area of 790 m2 · g-1 with larger pores and microspore volume than samples prepared by using the conventional thermal calcination method （550 ℃ and 5 h, 660 m2 · g-1）. In addition to less shrinkage of the silica framework, the DBD-prepared SBA-15 showed significantly increased weight loss of 8.3% about 200℃ as compared with that of conventional calcination （5.5%）, which is attributed mainly to the dehydroxylation by condensation of silanol groups.Organic templates P-123 of mesoporous SBA-15 can be effectively removed in a few minutes （4 min） by using the dielectric-barrier discharge （DBD） plasma technique at ambient pressure and low gas temperature （around 130℃）. The mesoporous SBA-15 was characterized by FT-IR, 29Si solid sate NMR, TEM, XRD, TGA and N2 adsorption/desorption isotherms. The as-made SBA-15 treated with DBD plasma exhibited a larger surface area of 790 m2 · g-1 with larger pores and microspore volume than samples prepared by using the conventional thermal calcination method （550 ℃ and 5 h, 660 m2 · g-1）. In addition to less shrinkage of the silica framework, the DBD-prepared SBA-15 showed significantly increased weight loss of 8.3% about 200℃ as compared with that of conventional calcination （5.5%）, which is attributed mainly to the dehydroxylation by condensation of silanol groups.

关 键 词：DBD plasma SBA-15 elimination of organic template mesoporous materials 

分 类 号：TB383.4[一般工业技术—材料科学与工程]