Aqueous-phase hydrodeoxygenation of 4-propylphenol as a lignin model to n-propylbenzene over Re-Ni/ZrO2 catalysts

被引：41

作者：

Feng, Bo ^{[1
]}

Kobayashi, Hirokazu ^{[1
]}

Ohta, Hidetoshi ^{[2
]}

Fukuoka, Atsushi ^{[1
]}

机构：

[1] Hokkaido Univ, Catalysis Res Ctr, Kita Ku, Sapporo, Hokkaido 0010021, Japan

[2] Ehime Univ, Grad Sch Sci & Engn, Matsuyama, Ehime 7908577, Japan

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2014年 / 388卷

基金：

日本学术振兴会;

关键词：

Hydrodeoxygenation; Lignin model; Ni catalysts; Water; METHYL-SUBSTITUTED PHENOLS; HIGH-TEMPERATURE WATER; RENEWABLE CHEMICALS; PYROLYSIS OIL; RE-PT; CONVERSION; GUAIACOL; CYCLOHEXENE; MECHANISM; KINETICS;

D O I：

10.1016/j.molcata.2013.09.025

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Aqueous-phase hydrodeoxygenation of 4-propylphenol as a lignin model to n-propylbenzene was carried out over various Ni based catalysts. Among the catalysts tested, Re-Ni/ZrO2 showed the best catalytic performance. Addition of Re decreased the Ni particle size and greatly improved the catalytic activity. H-2 pressure, Re to Ni ratio and reaction temperature were tuned in the optimization of reaction conditions for favorable formation of n-propylbenzene. Under the conditions of 300 degrees C and 4 MPa H-2, the yield of n-propylbenzene reached 54% over Re-Ni/ZrO2 (Re/Ni ratio 0.33) catalyst. It is suggested that the formation of n-propylbenzene proceeds via the hydrogenation of 4-propylphenol to form 4-propylcyclohexanol, followed by the dehydration to give 4-propylcyclohexene and the subsequent dehydrogenation to n-propylbenzene. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：41 / 46

页数：6

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