Selective hydrogenation of benzoic acid to cyclohexane carboxylic acid over microwave-activated Ni/carbon catalysts
Selective hydrogenation of benzoic acid to cyclohexane carboxylic acid over microwave-activated Ni/carbon catalysts
复制标题
微波活化镍/碳催化剂上苯甲酸选择性加氢生成环己烷甲酸
DOI：
10.1016/j.mcat.2017.10.015
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发表时间：
2018-01-01
影响因子：
4.6
通讯作者：
Xia, Q. H.
中科院分区：
文献类型：
--
作者：
Lu, X. H.;Shen, Y.;Xia, Q. H.
在不同表面性质的Ni/C催化剂上，芳香羧酸直接加氢得到了高产率的环己烷羧酸。用SEM、TEM、H2-TPR和N2吸附等温线对催化剂进行了表征，测定了催化剂的比表面积和孔隙率。氢化反应在间歇压力反应器中在气-液相中在200 ℃下进行。微波活化生物炭负载非贵金属Ni催化剂上苯甲酸转化率为86.2mol%，环己烷羧酸的选择性达到100%。研究了10%Ni/CSC-b催化剂在苯甲酸加氢制环己烷羧酸反应中的稳定性。Ni的负载量、Ni物种的高度分散性、合适的微波加热功率以及Ni物种与碳的强相互作用对反应有利。(C)2017爱思唯尔B. V.保留所有权利。
High yields of cyclohexane carboxylic acids were obtained by direct hydrogenation of aromatic carboxylic acids over different Ni/carbon catalysts having distinctive surface properties. The catalysts were characterized by SEM, TEM, H-2-TPR and N-2 adsorption isotherms for the determination of BET surface area and porosity. The hydrogenation reaction was carried out in batch pressure reactor in gas-liquid phase at 200 degrees C. High selectivity (100%) of cyclohexane carboxylic acids at 86.2 mol% conversion of benzoic acid was achieved over microwave-activated biochar supported non-precious metal Ni catalyst. The 10%Ni/CSC-b catalyst has been investigated for hydrogenation of benzoic acid to cyclohexane carboxylic acids and shown little deactivation in stability test. The effects of Ni loading, high dispersion of Ni species, appropriate power of microwave heating and strong interaction of Ni species with carbon are of benefit to the reaction. (C) 2017 Elsevier B.V. All rights reserved.