Issue 17, 2012
From the journal:

RSC Advances

Novel Cu–Fe bimetal catalyst for the formation of dimethyl carbonate from carbon dioxide and methanol†

Yingjie Zhou,a   Shuanjin Wang,*a   Min Xiao,a   Dongmei Han,a   Yixin Lub  and  Yuezhong Meng*a  

* Corresponding authors

a The Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province/State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen University, Guangzhou, PR China
E-mail: mengyzh@mail.sysu.edu.cn, wangshj@mail.sysu.edu.cn
Fax: +86-020-84114113
Tel: +86-020-84115506

b Department of Chemistry & Medicinal Chemistry Program, Office of Life Sciences, National University of Singapore, 3 Science Drive 3, Singapore, Republic of Singapore

Abstract

A novel Cu–Fe bimetal supported catalytic system was prepared and applied to the direct dimethyl carbonate (DMC) formation from methanol and CO2. The prepared catalysts were characterized by means of temperature-programmed reduction (TPR), X-ray powder diffraction (XRD), laser Raman spectra (LRS), X-ray photoelectron spectroscopy (XPS) and temperature programmed desorption (TPD). Metallic Cu, Fe and oxygen deficient Fe2O3−x (0 < x < 3) were formed during the reduction and activation step. The supported Cu–Fe bimetal catalysts exhibited good catalytic activity and high stability for the direct DMC formation. Under the reaction conditions at 120 °C and 1.2 MPa with space velocity of 360 h−1, the highest methanol conversion of 5.37% with DMC selectivity of 85.9% could be achieved. The high catalytic performance of the Cu–Fe bimetal catalysts in the DMC formation could be attributed to the interaction of base sites functioned by metallic Cu and Fe with acid sites provided by oxygen deficient Fe2O3−x (0 < x < 3) in the activation of methanol and CO2. The moderate concentration balance of acid and base sites was in favor of DMC formation.

Graphical abstract: Novel Cu–Fe bimetal catalyst for the formation of dimethyl carbonate from carbon dioxide and methanol

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Supplementary files

Article information

DOI
https://doi.org/10.1039/C2RA20359F
Article type
Paper
Submitted
28 Feb 2012
Accepted
17 May 2012
First published
22 May 2012

RSC Adv., 2012,2, 6831-6837

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Novel Cu–Fe bimetal catalyst for the formation of dimethyl carbonate from carbon dioxide and methanol

Y. Zhou, S. Wang, M. Xiao, D. Han, Y. Lu and Y. Meng, RSC Adv., 2012, 2, 6831 DOI: 10.1039/C2RA20359F

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