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Copper‐Fiber‐Structured Pd–Au–CuO x : Preparation and Catalytic Performance in the Vapor‐Phase Hydrogenation of Dimethyl Oxalate to Ethylene Glycol
Author(s) -
Han Lupeng,
Zhang Li,
Zhao Guofeng,
Chen Yanfei,
Zhang Qiaofei,
Chai Ruijuan,
Liu Ye,
Lu Yong
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201501415
Subject(s) - ethylene glycol , catalysis , materials science , copper , fiber , oxalate , selectivity , inorganic chemistry , ethylene , galvanic cell , chemical engineering , nuclear chemistry , chemistry , organic chemistry , metallurgy , composite material , engineering
Abstract Cu‐fiber‐structured ternary Pd–Au–CuO x catalysts engineered from nano‐ to macro‐scales have been developed for the vapor‐phase dimethyl oxalate (DMO) hydrogenation to ethylene glycol (EG), with the aid of galvanic deposition of Pd and Au onto a thin‐sheet microfibrous structure using 8 μm Cu fiber. Effects of Pd and Au loadings and their ratio have been investigated on the catalyst performance as well as the reaction conditions including reaction temperature and pressure, liquid weight hourly space velocity, and H 2 /DMO ratio. The promising 0.1 Pd–0.5 Au–CuO x /Cu‐fiber catalyst is capable of converting 97–99 % DMO into EG product at a selectivity of 90–93 %. This catalyst is stable for at least 200 h. The Pd–Au–Cu 2 O synergistically promotes the hydrogenation activity and stabilizes Cu + sites to suppress deep reduction deactivation.