Aqueous-phase hydrodeoxygenation of bio-derived phenols to cycloalkanes

被引：469

作者：

Zhao, Chen ^{[1
]}

He, Jiayue ^{[1
]}

Lemonidou, Angeliki A. ^{[1
]}

Li, Xuebing ^{[1
]}

Lercher, Johannes A. ^{[1
]}

机构：

[1] Tech Univ Munich, Catalysis Res Ctr, Dept Chem, D-85747 Garching, Germany

来源：

JOURNAL OF CATALYSIS | 2011年 / 280卷 / 01期

关键词：

Bio-oil; Phenol derivatives; Aqueous-phase catalysis; Hydrodeoxygenation; Palladium; Dual-functional catalysis; SELECTIVE HYDROGENATION; SUPPORTED PD; PALLADIUM; BIOMASS; CYCLOHEXANONE; PYROLYSIS; CATALYSTS; OIL; CONVERSION; LIGNIN;

D O I：

10.1016/j.jcat.2011.02.001

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：

The kinetics of the catalytic hydrodeoxygenation of phenol and substituted phenols has systematically been investigated on the dual-functional catalyst system Pd/C and H3PO4 in order to better understand the elementary steps of the overall reaction. The reaction proceeds via stepwise hydrogenation of the aromatic ring, transformation of the cyclic enol to the corresponding ketone, hydrogenation of the cycloalkanone to the cycloalkanol and its subsequent dehydration as well as the hydrogenation of the formed cycloalkene. The presence of dual catalytic functions is indispensible for the overall hydrodeoxygenation. The dehydration reaction is significantly slower than the hydrogenation reaction and the keto/enol transformation, requiring a significantly larger concentration of Bronsted acid sites compared to the available metal sites for hydrogenation. (C) 2011 Published by Elsevier Inc.

引用

页码：8 / 16

页数：9