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Comparison of Kinetics and Activity of Ni‐Based Catalysts for Benzyl Phenyl Ether Catalytic Hydrogenolysis
Author(s) -
Zhu Chen,
Cao Jing-Pei,
Xie Tao,
Zhao Xiao-Yan,
Cui Xin,
Guo Zhen-Xing,
Shen Wen-Zhong,
Bai Jin,
Wei Xian-Yong
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201800694
Subject(s) - hydrogenolysis , catalysis , ether , toluene , chemistry , phenol , medicinal chemistry , kinetics , inorganic chemistry , organic chemistry , physics , quantum mechanics
The influence of the type of support [activated carbon (AC), HZSM‐5, and γ‐Al 2 O 3 ] on the performance of Ni‐based catalysts for the catalytic hydrogenolysis (CH) of benzyl phenyl ether (BPE) is investigated. The properties of an Ni‐based catalyst are investigated using diverse characterization techniques. An Ni/AC catalyst exhibits the highest dispersion of Ni atoms by CO pulse. The kinetic studies show that the apparent activation energies ( E a ) for CH of BPE increase in the order E a (Ni/AC) < E a (Ni/γ‐Al 2 O 3 ) < E a (Ni/HZSM‐5), and the initial turnover frequencies follow the order of Ni/AC (64 mol mol Nisurf −1 h −1 ) > Ni/γ‐Al 2 O 3 (58 mol mol Nisurf −1 h −1 ) > Ni/HZSM‐5 (45 mol mol Nisurf −1 h −1 ). All these results prove that the CH activity of BPE is significantly affected by the type of support, and Ni/AC is the highest activity catalyst in CH of the C—O bond of BPE. Toluene and phenol are major products in CH of BPE at a relatively low hydrogen pressure and high temperature. Based on catalytic experiments, a reaction mechanism is proposed, which provides the theoretical basis for converting lignite into high‐value organic molecules.