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Steam reforming of methanol using supported Mo2C catalysts

Paper ID Volume ID Publish Year Pages File Format Full-Text
44074 46002 2007 7 PDF Available
Title
Steam reforming of methanol using supported Mo2C catalysts
Abstract

Two supported molybdenum carbide catalysts, Mo2C supported on γ-alumina (Mo2C/γ-Al2O3) and zirconia (Mo2C/ZrO2), were investigated as an alternative catalyst for steam reforming of methanol. The catalysts were prepared by a temperature-programmed reaction (TPR) method, and it was found that the supported Mo2C catalysts are superior to an unsupported catalyst, with Mo2C/ZrO2 having a higher hydrogen yield than Mo2C/γ-Al2O3. We hypothesize that the suppression of methanation by interaction between molybdenum carbide and the zirconia support resulted in the increased hydrogen yield. Results from diffuse-reflectance infrared spectroscopy (DRIFTS) suggested that the ability of the zirconia support to retain methoxy groups while resisting the formation of hydroxyl groups on its surface is a key factor leading to a molybdenum carbide/zirconia support interaction which suppresses methanation. Under the operating conditions of a steam-to-carbon ratio of 1 and 400 °C, the reforming activity of the Mo2C/ZrO2 catalyst remained stable for longer than 10 h.

Graphical abstractMo2C supported on zirconia has shown the potential to be a promising reforming catalyst to produce hydrogen from methanol. At 400 °C with a steam-to-carbon ratio of one, 97% of methanol conversion and 62% of hydrogen yield can be achieved by using supported Mo2C/ZrO2 catalyst. The hydrogen production rate is 20 μmol/g s at WHSV of 3 h−1. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Supported molybdenum carbide; Methanol steam reforming; TPR method; Methanation; Water–gas shift reaction; Hydrogen yield
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 318, 20 February 2007, Pages 121–127
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
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