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Permanent link (DOI): https://doi.org/10.7939/R32T14

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Separation of Hydrogen and Carbon Dioxide from Syngas Using Clinoptilolite Natural Zeolite and Ordinary Portland Cement Composite Membranes Open Access

Descriptions

Other title
Subject/Keyword
Natural Zeolite
Gas Permeation Measurement
Membranes
Syngas
Cement
Membrane gas separation
Clinoptilolite
Mixed matrix membranes
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Zarro, Omar
Supervisor and department
Kuznicki, Steven (Chemical and Materials Engineering)
Examining committee member and department
Hashisho, Zaher (Civicl and Environmental Engineering)
Gupta, Rajender (Chemical and Materials Engineering)
Nazemifard, Neda (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2014-01-07T15:03:37Z
Graduation date
2014-06
Degree
Master of Science
Degree level
Master's
Abstract
Separating hydrogen and carbon dioxide from syngas is a necessary step for many industrial processes. Membrane separations are an attractive solution as they can operate at process temperatures (200-500 °C) and operate with a simple process. Pure thermally stable (up to 600 °C) clinoptilolite zeolite was mixed with a Portland cement matrix, pressed, and cured to prepare composite membranes. Such systems offer scalable, thermally stable, and low cost membranes for H2 and CO2 separation from syngas. Pure cement membranes demonstrated CO2 impermeability. Single gas permeation measurement of H2 and CO2 was conducted and demonstrated high H2/CO2 selectivities up to 115 with permeances on the order of 10-9 mol/m2·Pa·s for the composite membranes. The gas diffusion tests firmly exhibited molecular sieving toward H2 and CO2. These results suggest that cost-effective natural zeolites combined with ordinary Portland cement are capable of selective separation of H2 and encourage future development of this concept.
Language
English
DOI
doi:10.7939/R32T14
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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