2012年3月
Dehydration of 1,5-pentanediol over rare earth oxides
APPLIED CATALYSIS A-GENERAL
- ,
- ,
- 巻
- 419
- 号
- 開始ページ
- 41
- 終了ページ
- 48
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.apcata.2012.01.005
- 出版者・発行元
- ELSEVIER SCIENCE BV
Vapor-phase catalytic dehydration of 1,5-pentanediol was investigated over rare earth oxides (REOs) at 325-450 degrees C. The conversion of 1,5-pentanediol over REOs calcined at 700 and 800 degrees C was higher than that calcined at 500 degrees C. Sc2O3, Yb2O3, and Lu2O3 with cubic bixbyite structure showed the selectivity to 4-penten-1-ol with higher than 74 mol%, while REOs with hexagonal and monoclinic structures showed the selectivity with less than 50 mol%. Especially. Yb2O3 and Lu2O3 calcined at 1000 degrees C showed high formation rate of 4-penten-1-ol per specific surface area over 1 mmol h(-1) m(-2) at 400 degrees C. In the Yb2O3 catalyst calcined at 800 degrees C, the conversion of 1,5-pentanediol was increased up to 74.4 mol% with increasing contact time, together with stable selectivity to 4-penten-1-ol of 71.8 mol%. In comparing the reactivity of alkanediols to form the corresponding unsaturated alcohols over Yb2O3, we found the reactivity of alkanediols into the corresponding unsaturated alcohols was the following order: 1,4-butanediol >1,3-diols >> 1.5-pentanediol >> 1,6-hexanediol. (C) 2012 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.apcata.2012.01.005
- ISSN : 0926-860X
- Web of Science ID : WOS:000301912100005