Pd/polyaniline(SiO2) a novel catalyst for the hydrogenation of 2-ethylanthraquinone
Pd/polyaniline(SiO2) a novel catalyst for the hydrogenation of 2-ethylanthraquinone
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DOI：
10.1016/j.catcom.2005.02.009
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发表时间：
2005-05-01
影响因子：
3.7
通讯作者：
Stejskal, J
中科院分区：
文献类型：
--
作者：
Drelinkiewicz, A;Waksmundzka-Góra, A;Stejskal, J
一种新型钯催化剂负载在涂有聚苯胺 (PANI)（占聚合物重量 24.4%）的二氧化硅颗粒上，用于 2-乙基蒽醌 (eAQ) 的氢化。该2%Pd/PANI(SiO2)催化剂在eAQ加氢生成活性醌方面表现出比传统沉淀法制备的2%Pd/SiO2更好的选择性。这表明 PANI 基质对 Pd 中心性质的修饰对其反应性有影响。氢键强度的减弱和聚合物的疏水特性都可以被认为是显着提高Pd/PANI NOD催化剂性能的因素。 © 2005 Elsevier B.V. 保留所有权利。
A novel palladium catalyst supported on silica grains coated with polyaniline (PANI) (24.4 wt% of polymer) was used for the hydrogenation of 2-ethylanthraquinone (eAQ). This 2%Pd/PANI(SiO2) catalyst exhibited much better selectivity in the hydrogenation of eAQ to active quinones than that of 2%Pd/SiO2 prepared by a conventional precipitation method. It is suggested that the modification of properties of Pd centres by PANI matrix, has an effect on their reactivity. The weakening of the strength of hydrogen bonding and hydrophobic character of polymer both can be considered as factors remarkably improving performance of Pd/PANI NOD catalyst. © 2005 Elsevier B.V. All rights reserved.