Catalytic Performance and Texture of TEOS Based Cu/SiO2 Catalysts for Hydrogenation of Dimethyl Oxalate to Ethylene Glycol

Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (1): 119-123.

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Catalytic Performance and Texture of TEOS Based Cu/SiO₂ Catalysts for Hydrogenation of Dimethyl Oxalate to Ethylene Glycol

WANG Shu-rong*, YIN Qian-qian, LI Xin-bao

State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China

Received:2011-06-15 Revised:2011-10-10 Online:2012-01-25 Published:2011-12-27
Supported by:
Supported by the National Science and Technology Supporting Plan Through Contract, China(No.2011BAD22B06), the Zhejiang Provincial Natural Science Foundation, China(No. R1110089), the Fundamental Research Funds for the Central Universities of China(No.2011FZA4012), the Research Fund for the Doctoral Program of Higher Education of China (No.20090101110034), and the Zhejiang Provincial Key Science and Technology Innovation Team, China(No.2009R50012).

Abstract

Abstract: Highly active and selective Cu/SiO₂ catalysts for hydrogenation of dimethyl oxalate(DMO) to ethylene glycol(EG) were successfully prepared by means of a convenient one-pot synthetic method with tetraethoxysilane( TEOS) as the source of silica. XRD, H₂-TPR, SEM, TEM, XRF and N₂ physisorption measurements were performed to characterize the texture and structure of Cu/SiO2 catalysts with different copper loadings. The active components were highly dispersed on SiO₂ supports. Furthermore, the coexistence of Cu⁰ and Cu⁺ contributed a lot to the excellent performance of Cu-TEOS catalysts. The DMO conversion reached 100% and the EG selectivity reached 95% at 498 K and 2 MPa with a high liquid hourly space velocity over the 27-Cu-TEOS catalyst with an actual copper loading of 19.0%(mass fraction).

Key words: Cu/SiO₂, TEOS, Hydrogenation, Dimethyl oxalate, Ethylene glycol

WANG Shu-rong, YIN Qian-qian, LI Xin-bao. Catalytic Performance and Texture of TEOS Based Cu/SiO₂ Catalysts for Hydrogenation of Dimethyl Oxalate to Ethylene Glycol[J]. Chemical Research in Chinese Universities, 2012, 28(1): 119-123.

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Catalytic Performance and Texture of TEOS Based Cu/SiO₂ Catalysts for Hydrogenation of Dimethyl Oxalate to Ethylene Glycol

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