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The decomposition of ethanol over Mo2C/carbon catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
44237 46010 2007 11 PDF Available
Title
The decomposition of ethanol over Mo2C/carbon catalysts
Abstract

The formation of Mo2C by the reaction of MoO3 with carbon Norit in H2 flow was followed by X-ray photoelectron spectroscopy. It was found that the conversion of MoO3 into Mo2C in the surface layer of Norit was complete at 973 K. Mo2C prepared in this way on the surface of carbon Norit was found to be an effective catalyst for the decomposition of ethanol to generate H2; the extent of the reaction approached 100% even at 623–673 K. Depending on the temperature and the Mo2C loading about 32–62% of hydrogen content of the decomposed ethanol has been converted into H2. Besides H2, acetaldehyde was the major product indicating that the dehydrogenation reaction of ethanol is the main process. The formation of CH4, CO, C2H4 and C2H6 also occurred in few percents. Another feature of the Mo2C/Norit catalysts is its high stability. The conversion of ethanol decreased only with few percent even after 75 h at 723 K. Adding potassium to Mo2C/Norit enhanced the catalytic efficiency of Mo2C and increased the formation of hydrogen. Mo2C prepared on multiwall carbon nanotube also proved to be active for the decomposition of ethanol. Adding water to ethanol enhanced the hydrogen production only to a small extent.

Graphical abstractMo2C prepared by the reaction of MoO3 with carbon Norit in H2 is an effective catalyst for the decomposition of ethanol to generate H2. A remarkable feature of the catalysts is its high stability. Adding potassium to Mo2C/Norit enhanced the formation of hydrogen. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Hydrogen production; Ethanol decomposition; Preparation of Mo2C on Norit; Mo2C on carbon nanotube; X-ray photoelectron spectroscopy; Mo2C catalyst; Carbon as a support
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The decomposition of ethanol over Mo2C/carbon catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 327, Issue 1, 31 July 2007, Pages 95–105
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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Any Questions? feel free to contact us