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Permanent link (DOI): https://doi.org/10.7939/R3TX10

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Concentration and Mixing Effects on the Production of Amine Hydrochloride Salts in a Confined Impinging Jet Reactor Open Access

Descriptions

Other title
Subject/Keyword
CIJR
Amine
Mixing
Hydrochlorination
Polyurethane
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Farrokhzad Ershad, Navid
Supervisor and department
Kresta, Suzanne (Chemical and Material Engineering)
Examining committee member and department
Nazemifard, Neda (Chemical and Material Engineering)
Kostiuk, Larry (Mechanical Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2013-09-16T17:32:42Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
A Confined Impinging Jet Reactor (CIJR) was used to react 4, 4’-methylene dianiline (MDA) with hydrogen chloride (HCl) in order to study formation of the aminehydrochloride (AHC) salts, unwelcome byproducts in the manufacture of polyurethanes. The effects of several processing variables (local concentration of MDA and HCl and the intensity of local mixing) on the formation of AHC salts were studied. The precipitated solids were characterized using a wide range of analytical techniques: elemental analysis, FTIR, TGA, DSC, optical microscopy, SEM and EDX. The effects of each process variable on the solid compounds and composition, thermal properties, morphology and average particle size are discussed. Results show that formation of AHC salts more than anything depends on local concentration of MDA and it dominates the structure of product in terms of formation of MDA.HCl or MDA.2HCl. Mixing intensity affects product purity of and evenness of shape and average size.
Language
English
DOI
doi:10.7939/R3TX10
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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