Synthesis of ZSM-5@ Ordered Mesoporous Silica Composites by Dodecylamine Surfactant  

作　　者：马扩彦 俞海军 FENG Guanglin WANG Changguo 戴亚 

机构地区：[1]Harmful Components and Tar Reduction in Cigarette, Sichuan Key Laboratory Technical Research Center [2]Chuanyu Branch of China Tobacco Corporation

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2014年第6期1124-1128,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the China National Tobacco Corporation(110201101027(JH-02))

摘　　要：The core-shell structures of ZSM-5 coated with mesoporous silica were synthesized by means of dodecylamine（DDA） surfactant. The results show that the mesoporous silica shells are coated on ZSM-5 cores and result in the formation of hierarchical porous structures. The thickness of the coating shell can be controlled by changing the adding amount of TEOS. The core-shell composites with the thickness of 35 nm possess high surface areas（about 528 m2·g-1）, large pores（about 3.5 nm in diameter） on the silica shells. The composite molecular sieves display higher adsorption capacity for benzene（140.2 mg·g-1） and butyraldehyde（213.7 mg·g-1） than that of pristine ZSM-5 for benzene（99.2 mg·g-1） and butyraldehyde（134.7 mg·g-1）. The composite molecular sieves show a wide application foreground for harmful gas adsorbent for environmental protection.The core-shell structures of ZSM-5 coated with mesoporous silica were synthesized by means of dodecylamine（DDA） surfactant. The results show that the mesoporous silica shells are coated on ZSM-5 cores and result in the formation of hierarchical porous structures. The thickness of the coating shell can be controlled by changing the adding amount of TEOS. The core-shell composites with the thickness of 35 nm possess high surface areas（about 528 m2·g-1）, large pores（about 3.5 nm in diameter） on the silica shells. The composite molecular sieves display higher adsorption capacity for benzene（140.2 mg·g-1） and butyraldehyde（213.7 mg·g-1） than that of pristine ZSM-5 for benzene（99.2 mg·g-1） and butyraldehyde（134.7 mg·g-1）. The composite molecular sieves show a wide application foreground for harmful gas adsorbent for environmental protection.

关 键 词：core-shell zeolite adsorption dodecylamine butyraldehyde benzene 

分 类 号：TQ424[化学工程] TB33[一般工业技术—材料科学与工程]