The influence of acidity of carbon nanofibre-supported palladium catalysts in the hydrogenolysis of hydroxymatairesinol

被引：21
作者：
Markus, Heidi
Plomp, Arie J.
Maki-Arvela, Paivi
Bitter, Johannes H.
Murzin, Dmitry Yu.
机构：
[1] Abo Akad Univ, Lab Ind Chem, Proc Chem Ctr, FI-20500 Turku, Finland
[2] Univ Utrecht, Dept Inorgan Chem & Catalysis, NL-3508 TB Utrecht, Netherlands
来源：
CATALYSIS LETTERS | 2007年 / 113卷 / 3-4期
关键词：
carbon nanofibres; palladium; acidity; hydrogenolysis;
D O I：
10.1007/s10562-007-9020-1
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 lignan hydroxymatairesinol (HMR, extracted from Norway spruce knots) was hydrogenolysed to matairesinol (MAT) over palladium supported by carbon nanofibres (Pd/CNF) in 2-propanol at 70 degrees C under hydrogen flow. The influence of support acidity on the activity and the selectivity to MAT was studied. The acidity of the Pd/CNF catalyst was varied by heat-treatment at different temperatures in nitrogen flow. The catalysts were characterized by transmission electron microscopy (TEM), inductively coupled plasma emission mass-spectrometry (ICP-MS, metal content), H-2-chemisorption (dispersion, metal particle size), and titration using NaOH. A more acidic support material was more active and selective to the desired product MAT. The major byproduct was 7-iso-propoxymatairesinol resulting from a reaction of the solvent with HMR over the acid sites on the support. The hydrogenolysis of HMR to MAT requires both the presence of metal and acidity.
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收藏
页码：141 / 146
页数：6
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