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Catalytic and kinetic study of methanol dehydration to dimethyl ether Open Access

Descriptions

Other title
Subject/Keyword
Amberlyst
dimethyl ether
methanol dehydration
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Hosseininejad, Seyed Shaham Aldin
Supervisor and department
Afacan, Artin (Chemical and Material Engineering)
Hayes, Robert E. (Chemical and Material Engineering)
Examining committee member and department
Olfert, Jason (Mechanical Engineering)
Semagina, Natalia (Chemical and Material Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2010-09-29T15:06:38Z
Graduation date
2010-11
Degree
Master of Science
Degree level
Master's
Abstract
Dimethyl ether (DME), as a solution to environmental pollution and diminishing energy supplies, can be synthesized more efficiently, compared to conventional methods, using a catalytic distillation column for methanol dehydration to DME over an active and selective catalyst. In current work, using an autoclave batch reactor, a variety of commercial catalysts are investigated to find a proper catalyst for this reaction at 110-135 °C and 900 kPa. Among the γ-Alumina, Zeolites (HY, HZSM-5 and HM) and ion exchange resins (Amberlyst 15, Amberlyst 35, Amberlyst 36 and Amberlyst 70), Amberlyst 35 and 36 demonstrate good activity for the studied reaction at the desired temperature and pressure. Then, the kinetics of the reaction over Amberlyst 35 is determined. The experimental data are described well by Langmuir-Hinshelwood kinetic expression, for which the surface reaction is the rate determining step. The calculated apparent activation energy for this study is 98 kJ/mol.
Language
English
DOI
doi:10.7939/R3VH3X
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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