TY - JOUR
T1 - Effects of added phosphorus on conversion of ethanol to propylene over ZSM-5 catalysts
AU - Takahashi, Atsushi
AU - Xia, Wei
AU - Nakamura, Isao
AU - Shimada, Hiromichi
AU - Fujitani, Tadahiro
N1 - Funding Information:
This work was supported by a New Energy and Industrial Technology Development Organization (NEDO) grant. The authors thank Professor T. Sano (Hiroshima University) for helpful discussions and for the measurement of 27 Al MAS NMR spectra.
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/5/7
Y1 - 2012/5/7
N2 - We investigated the effects of added phosphorus on the conversion of ethanol to propylene over ZSM-5 zeolite catalysts. We found that the activity of the catalysts was enhanced by the addition of phosphorus, and we suggest that the added phosphorus suppressed oligomerization of propylene and butene by decreasing the acidity of the active sites of the zeolites. Furthermore, the addition of phosphorus greatly enhanced the hydrothermal stability of the zeolites and thus substantially improved the catalyst durability during ethanol conversion. Carbon deposition, which was the main cause of deactivation of the phosphorus-modified zeolites, was suppressed by H 2O produced by dehydration of ethanol.
AB - We investigated the effects of added phosphorus on the conversion of ethanol to propylene over ZSM-5 zeolite catalysts. We found that the activity of the catalysts was enhanced by the addition of phosphorus, and we suggest that the added phosphorus suppressed oligomerization of propylene and butene by decreasing the acidity of the active sites of the zeolites. Furthermore, the addition of phosphorus greatly enhanced the hydrothermal stability of the zeolites and thus substantially improved the catalyst durability during ethanol conversion. Carbon deposition, which was the main cause of deactivation of the phosphorus-modified zeolites, was suppressed by H 2O produced by dehydration of ethanol.
KW - Carbon deposition
KW - Ethanol
KW - P-ZSM-5
KW - Propylene
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U2 - 10.1016/j.apcata.2012.02.029
DO - 10.1016/j.apcata.2012.02.029
M3 - Article
AN - SCOPUS:84859550230
SN - 0926-860X
VL - 423-424
SP - 162
EP - 167
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -