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Ma K.,Sichuan Key Laboratory Technical Research Center | Ma K.,Chuanyu Branch of China Tobacco Corporation | Yu H.,Sichuan Key Laboratory Technical Research Center | Yu H.,Chuanyu Branch of China Tobacco Corporation | And 6 more authors.
Journal Wuhan University of Technology, Materials Science Edition | Year: 2014

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. © 2014, Wuhan University of Technology and Springer-Verlag Berlin Heidelberg. Source

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