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Silica Membrane Reactors for Hydrogen Processing

Battersby, Scott E and Miller, D and Zed, M and Patch, J and Rudolph, Victor and Duke, Mikel and Diniz da Costa, J. C (2007) Silica Membrane Reactors for Hydrogen Processing. Advances in Applied Ceramics, 106 (1-2). pp. 29-34. ISSN 1743-6753

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Abstract

This paper presents an analysis of membrane reactor operation and design for enhanced hydrogen production. Silica derived membranes were used for gas permeation studies and a membrane reactor for the water gas shift reaction. A model of the equilibrium reaction is developed and analysed with respect to operational factors such as temperature and pressure analysed in consideration for production of a 99% pure H-2 stream. These factors influence the optimisation of the reaction and permeation rate as well as the equilibrium conversion. It was found that using H-2 permeation membranes, the H-2 equilibrium could be shifted towards the products. In turn, this provided better conversion at higher temperatures. The cost of H-2 production using membrane reactors is dependent upon several engineering process parameters such as reaction rates, permeation, selectivities, temperature and pressure. Silica membranes assembled in membrane reactors out performed conventional reactor systems. Silica membranes were synthesised showing permeations of 5 x10(-8) mol m(-2) s(-1) Pa-1 and H-2/CO selectivities >10. The silica membrane capital cost per kg H-2 produced ranged from US$ 0.25 to 3.00 for 10 to 80% H-2 separation respectively.

Item Type: Article
Uncontrolled Keywords: ResPubID18929, materials science, ceramics, H-2 separation, CO conversion, membrane cost analysis, gas shift reaction, performance, dehydrogenation, permeation, hydrocarbons, cyclohexane, separation
Subjects: Faculty/School/Research Centre/Department > Institute for Sustainability and Innovation (ISI)
FOR Classification > 0904 Chemical Engineering
Depositing User: VUIR
Date Deposited: 08 May 2012 02:07
Last Modified: 06 Feb 2015 02:04
URI: http://vuir.vu.edu.au/id/eprint/3175
DOI: 10.1179/174367607X152399
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Citations in Scopus: 7 - View on Scopus

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