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Size-Controlled Synthesis of Nano-Zeolites and Their Application to Light Olefin Synthesis

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/53170

Title: Size-Controlled Synthesis of Nano-Zeolites and Their Application to Light Olefin Synthesis
Authors: Tago, Teruoki Browse this author →KAKEN DB
Konno, Hiroki Browse this author
Nakasaka, Yuta Browse this author →KAKEN DB
Masuda, Takao Browse this author →KAKEN DB
Keywords: Nano-zeolite
Surfactant
Light olefin
n-Hexane cracking
Acetone to olefin
Issue Date: Sep-2012
Publisher: Springer Netherlands
Journal Title: Catalysis Surveys from Asia
Volume: 16
Issue: 3
Start Page: 148
End Page: 163
Publisher DOI: 10.1007/s10563-012-9141-4
Abstract: For the application of zeolites as heterogeneous catalysts, low diffusion resistance for hydrocarbons within the micropore is essential for improving product selectivity and catalyst lifetime. This problem has been overcome by reducing the crystal size. This review introduces size-controlled preparation of nano-sized zeolites via hydrothermal synthesis in water/surfactant/organic solvent (emulsion method) and their application to heterogeneous catalysts. The ionicity of the hydrophilic group in surfactant molecules and the concentration of the Si source affected the crystallinity and morphology of zeolites prepared using the emulsion method. When using a non-ionic surfactant, mono-dispersed silicalite-1 nanocrystals approximately 60 nm in diameter were successfully prepared. Nano- and macro-ZSM-5 zeolites with crystal sizes of approximately 150-200 nm and 1.5 μm, respectively, were prepared and applied to n-hexane cracking and acetone-to-olefin reactions to investigate the effect of zeolite crystal size on catalytic stability and light olefin yield. Application of nano-zeolite to light olefin production was effective in achieving faster mass transfer of hydrocarbon molecules within the micropore, which led to improvements in olefin yields and catalyst lifetime.
Rights: The final publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/53170
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 多湖 輝興

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