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CuO–ZnO anchored on APS modified activated carbon as an enhanced catalyst for methanol synthesis—The role of ZnO

Published online by Cambridge University Press:  16 May 2018

Huamei Duan ,
Yandong Li ,
Xiangyong Lv ,
Dengfu Chen ,
Mujun Long  and
Liangying Wen
Huamei Duan*
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Yandong Li*
Affiliation:
Chongqing Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology, Yangtze Normal University, Chongqing 408100, China
Xiangyong Lv
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Dengfu Chen
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Mujun Long
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
Liangying Wen
Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
*
a)Address all correspondence to these authors. e-mail: duanhuamei@cqu.edu.cn
b)e-mail: andyydlee@gmail.com
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Abstract

In this work, activated carbon was modified by ammonium persulfate and used as the catalyst support for CO2 hydrogenation to methanol. Then CuO and/or ZnO were loaded on the support by a facile wet-impregnation method. The obtained CuZn/C, Cu/C, and Zn/C catalysts were characterized by a series of characterization techniques including N2 physisorption, X-ray diffraction (XRD), X-ray photoelectron (XPS), and scanning and transmission electron microscopies (SEM and TEM). XRD and XPS results showed that ZnO affected the reduction of Cu2+. The TEM results showed that Cu particles were 14–18 nm for the fresh catalysts CuZn/C and Cu/C. ZnO particles were too small to be identified by TEM. The used catalysts CuZn/C and Cu/C had particle sizes of 10–25 nm and 50–60 nm, respectively. The enhanced methanol synthesis performance by ZnO could be ascribed to the morphology effect and slowing down the Cu particles sintering during the reactions.

Keywords

CO2 hydrogenationmethanol synthesisCu–Zn nanoparticlessupported catalyst
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 11 , 13 June 2018 , pp. 1625 - 1631
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Copyright
Copyright © Materials Research Society 2018 

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