Osman, AI, Abu-Dahrieh, JK, Cherkasov, N et al. (5 more authors) (2018) A highly active and synergistic Pt/Mo<inf>2</inf>C/Al<inf>2</inf>O<inf>3</inf>catalyst for water-gas shift reaction. Molecular Catalysis, 455. pp. 38-47. ISSN 2468-8231
Abstract
Catalysts consisting of Pt and Cu supported on Mo2C/η-Al2O3, Mo2C/γ-Al2O3or Mo2C were prepared and used for the low-temperature water gas shift reaction (WGSR). The catalysts were characterized by elemental analysis, powder X-ray diffraction (XRD), temperature-programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The catalysts were studied in water gas shift reaction with a reaction mixture containing 11% CO, 43% H2, 6% CO2, 21% H2O (real feed composition mixture from the reformer) and balance He, with a reaction temperature range of 180–300 °C at a space velocity (SV) of 125,000 h−1. Catalyst supports (η-Al2O3and γ-Al2O3), led to different synergetic effect between the two most active phases of Pt metal and Mo2C. Pt/Mo2C/η-Al2O3is a promising catalyst (44% conversion at 180 °C) due to the close interaction between Pt and Mo2C phases on the surface of the catalyst. The 4 wt% Pt-Mo2C showed the highest activity where the temperature at which 50% conversion observed was at only 180 °C with SV of 125,000 h−1and constant stability over 85 h.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Elsevier B.V.. This is an author produced version of a paper published in Molecular Catalysis. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Water gas shift reaction; Molybdenum carbide; Platinum; Alumina; Syngas |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 20 Jul 2018 10:41 |
Last Modified: | 29 May 2019 00:43 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.mcat.2018.05.025 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:133515 |