Effects of added phosphorus on conversion of ethanol to propylene over ZSM-5 catalysts

Autor:	Atsushi Takahashi, Hiromichi Shimada, Isao Nakamura, Tadahiro Fujitani, Wei Xia
Rok vydání:	2012
Předmět:	Ethanol Process Chemistry and Technology Phosphorus Inorganic chemistry chemistry.chemical_element medicine.disease Butene Catalysis Hydrothermal circulation chemistry.chemical_compound chemistry medicine Dehydration ZSM-5 Zeolite
Zdroj:	Applied Catalysis A: General. :162-167
ISSN:	0926-860X
Popis:	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 H2O produced by dehydration of ethanol.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f2306bf38d011b9936d7d0f638de6c21 https://doi.org/10.1016/j.apcata.2012.02.029 Zobrazit plný text záznamu Full Text from ScienceDirect