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Copper zinc oxide nanocatalysts grown on cordierite substrate for hydrogen production using methanol steam reforming
Natl Res Inst Chem Technol, Petrochem Div, Zaria, Nigeria..
Sultan Qaboos Univ, Petr & Chem Engn, Muscat, Oman..
Natl Res Inst Chem Technol, Petrochem Div, Zaria, Nigeria..
Sultan Qaboos Univ, Dept Phys, Muscat, Oman..
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2019 (English)In: International journal of hydrogen energy, ISSN 0360-3199, E-ISSN 1879-3487, Vol. 44, no 41, p. 22936-22946Article in journal (Refereed) Published
Abstract [en]

Hydrogen production from methanol rather than the traditional source, methane, is considered to be advantageous in ease of transportation and storage. However, the current copper-based catalysts utilized in methanol steam reforming are associated with challenges of sintering at high temperature and production of CO which could poison fuel cells. In addressing these challenges, ZnO nanorods were grown hydrothermally on the surface of cordierite and impregnated with Cu to produce catalysts for methanol steam reforming. The catalysts were characterized using SEM, XRD, FTIR, XPS, BET and Raman Spectroscopy. A fixed-bed reactor was used for testing the catalysts while the reaction products were characterized using a GC fitted with FID and TCD. The effects of temperature, methanol concentration and particle size of catalysts on methanol steam reforming were investigated. The experiments were carried out between 180 and 350 degrees C. CO selectivity of 0% was observed for temperatures between 180 and 230 degrees C for 0.8 MeOH:1H(2)O with an average H-2 selectivity of 98% for that temperature range. XPS showed that the catalyst was relatively unchanged after reaction while Raman spectroscopy revealed coke formation on the catalyst surface for reactions carried out above 300 degrees C. This shows that the catalyst is active and selective for the reaction. Publications LLC. Published by Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2019. Vol. 44, no 41, p. 22936-22946
Keywords [en]
Hydrogen production, Copper zinc oxide catalysts, Methanol steam reforming, Cordierite, Nanocatalysts, Nanorods
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-261037DOI: 10.1016/j.ijhydene.2019.06.185ISI: 000485210500017Scopus ID: 2-s2.0-85069848946OAI: oai:DiVA.org:kth-261037DiVA, id: diva2:1356714
Note

QC 20191002

Available from: 2019-10-02 Created: 2019-10-02 Last updated: 2019-10-02Bibliographically approved

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