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Effect of Crystal Size on Acetone Conversion over SAPO-34 Crystals

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Abstract

Catalytic properties of the 75 nm and 0.8 μm-sized SAPO-34 crystals on acetone-to-olefins (ATO) reaction were compared. The 75 nm-sized crystals (nanocrystals) showed longer catalyst lifetime than 0.8 μm-sized crystals, and products selectivity was similar for the two SAPO-34 catalysts, as is the case in methanol-to-olefins (MTO) and dimethyleter-to-olefins (DTO) reactions. The reaction site of ATO reaction over SAPO-34 was studied using coke-deposited SAPO-34 as catalysts whose pores are deactivated through the DTO reaction. The reason for longer catalyst lifetime of the nanocrystals in the ATO reaction must be a large surface area of the SAPO-34 nanocrystals, unlike in the case of the MTO and DTO reactions.

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Authors and Affiliations

  1. Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan

    Yuichiro Hirota, Yuichi Nakano, Kazuo Watanabe, Yoshiaki Uchida, Yasuyuki Egashira & Norikazu Nishiyama

  2. Department of Materials Science and Technology, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan

    Manabu Miyamoto

Authors
  1. Yuichiro Hirota
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  2. Yuichi Nakano
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  3. Kazuo Watanabe
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  4. Yoshiaki Uchida
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  5. Manabu Miyamoto
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  6. Yasuyuki Egashira
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  7. Norikazu Nishiyama
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Correspondence to Norikazu Nishiyama.

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Hirota, Y., Nakano, Y., Watanabe, K. et al. Effect of Crystal Size on Acetone Conversion over SAPO-34 Crystals. Catal Lett 142, 464–468 (2012). https://doi.org/10.1007/s10562-012-0797-1

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  • DOI: https://doi.org/10.1007/s10562-012-0797-1

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