Hydrogen production from methanol steam reforming over Cu-Ti-P oxide catalysts

Title
Hydrogen production from methanol steam reforming over Cu-Ti-P oxide catalysts
Author(s)
강미숙김수정[김수정]
Keywords
COPPER-BASED CATALYSTS; SUPPORTED GOLD CATALYSTS; PARTIAL OXIDATION; REACTION NETWORK; CARBON-MONOXIDE; CU/ZNO/AL2O3; SURFACE; SPECTROSCOPY; ALUMINA
Issue Date
201205
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.18, no.3, pp.969 - 978
Abstract
Cu-Ti-P oxide catalysts, with Cu (1.0 mol%) and P (1.0, 2.0, and 4.0 mol%) incorporated into the framework of Ti(1.0 mol%)O-2, were synthesized using a solvothermal method and their potential compatibilities in methanol steam reforming (MSR) were investigated. The scanning electron microscopy (SEM) image of Cu(1)-Ti(1)-P(2) oxide revealed a uniform sheet type, whereas the other two catalysts, Cu(1)-Ti(1)-P(1) and Cu(1)-Ti(1)-P(4), were irregular and non-uniform. Comparative experiments in oxidative MSR were also conducted over a gamma-Al2O3 support. The Cu-Ti-P/gamma-Al2O3 catalysts provided significantly higher MSR reactivity compared to that without P component, and the tendency was similar in the presence of the gamma-Al2O3 support. The main products from steam reforming over the Cu-Ti-P/gamma-Al2O3 catalysts were H-2, CO, and CO2. The Cu-Ti-P/gamma-Al2O3 catalysts also reduced the degree of carbon deposition and improved the H-2 product selectivity by facilitating complete oxidation around 600 degrees C. Herein, we suggest a mechanism in which the P component plays the important role of encouraging the Bronsted acid sites, leading to strong partial oxidation and thermal cracking of methanol to acetaldehyde and CO2, and finally to an increased hydrogen yield and suppressed CO generation. (C) 2012 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/28279http://dx.doi.org/10.1016/j.jiec.2011.10.009
ISSN
1226-086X
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이과대학 > 화학생화학부 > Articles
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