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- Title
Effect of Crystal Size on Acetone Conversion over SAPO-34 Crystals.
- Authors
Hirota, Yuichiro; Nakano, Yuichi; Watanabe, Kazuo; Uchida, Yoshiaki; Miyamoto, Manabu; Egashira, Yasuyuki; Nishiyama, Norikazu
- 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. Graphical Abstract: [Figure not available: see fulltext.]
- Subjects
ACETONE; NANOCRYSTALS; CATALYSTS; METHANOL; SURFACE area; ALKENES; CHEMICAL reactions
- Publication
Catalysis Letters, 2012, Vol 142, Issue 4, p464
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-012-0797-1