1,3-butadiene production by crotyl alcohol dehydration over solid acids and catalyst deactivation by water adsorption

Atsushi Segawa, Tatsuya Ichijo, Nobuhiro Kimura, Keisuke Tsuruta, Naohiro Yoshida, Masaki Okamoto

研究成果: Article

1 引用 (Scopus)

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The synthesis of 1,3-butadiene via the dehydration of crotyl alcohol (2-buten-1-ol) over solid acids (six silica-alumina catalysts, two zeolite catalysts, and one γ-alumina catalyst) was assessed. Crotyl alcohol conversion and butadiene selectivity were both 95% or more over commercial silica-alumina catalysts. However, a sudden decrease in catalytic activity was observed during the reaction. Since the deactivated catalyst was regenerated by drying at 150°C -200°C, results showed that the main cause of the catalyst deactivation was the adsorption of water formed during the reaction and not the coke formation. An analysis of the deactivated catalyst indicated that, since the formation of Al-OH by the hydrolysis of the Al-O-Al bond increased the hydrophilicity of the catalyst surface, the adsorption of water on the catalyst surface was promoted, while that of crotyl alcohol was probably inhibited. Also, based on the catalyst characterization, the silica-alumina catalysts with few silanol groups, few alumina-rich zones, and a low Si/Al ratio were preferable.

元の言語English
ページ(範囲)70-78
ページ数9
ジャーナルJournal of The Japan Petroleum Institute
63
発行部数2
DOI
出版物ステータスPublished - 2020

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology

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