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Dimethyl ether (DME) reforming by microreactor using Cu and Cr as active components over γ alumina

Paper ID Volume ID Publish Year Pages File Format Full-Text
41014 45874 2012 9 PDF Available
Title
Dimethyl ether (DME) reforming by microreactor using Cu and Cr as active components over γ alumina
Abstract

A series of plate type anodic alumina (γ-Al2O3) supported Cu and Cr catalysts were employed to investigate their reactivity in the partial oxidation (PO) of dimethyl ether (DME) in a microreactor. The effect of metal concentration and reaction temperature on DME conversion to hydrogen was assessed. It was found that conversion of DME to hydrogen by PO depends both on reaction temperature and active metal concentration. The catalysts were characterized by surface area (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) techniques. The metal loading as active component was investigated by electron probe micro analysis (EPMA) and X-ray fluorescence spectroscopy (XRF). The results showed that Cu as active component on γ-Al2O3 possessed better activity than Cr. Further, the catalytic activity of Cu was enhanced in the presence of Cr. The XRD and XPS analysis indicated that enhanced Cu activity in the presence of Cr could be correlated to the partial existence of CuCr2O4 along with CuO.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (114 K)Download as PowerPoint slideHighlights► Cu, Cr and Cu–Cr as catalyst for dimethyl ether reforming for hydrogen production. ► Catalysts were loaded on synthesized gamma alumina (129 m2/g) by impregnation. ► Activity of three catalyst systems falls in order, CuCr/Al2O3 > Cu/Al2O3 > Cr/Al2O3. ► The maximum hydrogen yield was obtained by CuCr/Al2O3 (97.11%) at 400 °C.

Keywords
γ alumina; Dimethyl ether Reforming; Hydrogen production; Cu; Cr Catalyst
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Dimethyl ether (DME) reforming by microreactor using Cu and Cr as active components over γ alumina
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 423–424, 7 May 2012, Pages 176–184
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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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