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Highly active and selective copper-containing HMS catalyst in the hydrogenation of dimethyl oxalate to ethylene glycol

Paper ID Volume ID Publish Year Pages File Format Full-Text
42809 45942 2008 9 PDF Available
Title
Highly active and selective copper-containing HMS catalyst in the hydrogenation of dimethyl oxalate to ethylene glycol
Abstract

Copper-containing mesoporous silica HMS catalysts were prepared by an impregnation method. The surface structures of these catalysts were characterized by N2-physisorption, X-ray diffraction, transmission electron microscopy, H2 temperature-programmed reduction, Fourier transform infrared spectroscopy, N2O titration and X-ray photoelectron spectroscopy. The results show that the copper-containing HMS catalysts exhibit superior catalytic performance in the selective hydrogenation of dimethyl oxalate to ethylene glycol compared to the commercial silica-supported ones obtained by the same method. The dimethyl oxalate conversion can reach 100% and the ethylene glycol selectivity can reach 92% at 473 K with 2.5 MPa H2 pressure and 0.2 h−1 liquid hour space velocity of dimethyl oxalate over the 5 wt.% Cu-HMS catalyst. The enhanced catalytic performance of copper-HMS catalysts may be attributed to the homogeneous dispersion and uniformity of the active copper species and to the larger copper surface areas attained on the HMS supports with large pore diameters and surface areas.

Graphical abstractCopper-containing mesoporous silica HMS catalysts prepared by an impregnation method exhibit excellent activity (100% conversion) and selectivity (>92%) in the selective hydrogenation of dimethyl oxalate (DMO) to ethylene glycol (EG) under mild condition of a reaction temperature of 473 K and a system pressure of 2.5 MPa.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Cu/HMS catalysts; Hydrogenation of dimethyl oxalate; Ethylene glycol; Wet impregnation method
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Highly active and selective copper-containing HMS catalyst in the hydrogenation of dimethyl oxalate to ethylene glycol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 349, Issues 1–2, 31 October 2008, Pages 91–99
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us