Thermokinetic model of hydroxylamine decomposition in the catalytic oxidation of ammonia with titanium silicalite-1
Authors
Walthert, Florian
Author (Corporation)
Publication date
23.10.2020
Typ of student thesis
Bachelor
Course of study
Collections
Type
11 - Student thesis
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Parent work
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DOI of the original publication
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Series number
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Issue / Number
Pages / Duration
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Publisher / Publishing institution
Hochschule für Life Sciences FHNW
Place of publication / Event location
Muttenz
Edition
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Abstract
Hydroxylamine is a key molecule for some important chemical processes. An example is the synthesis of ε-caprolactam, which is required for the production of Nylon. Since hydroxylamine decomposes thermally, its transport and storage are problematic. It is also problematic for the synthesis of hydroxylamine from ammonia with titanium silicalite-1.
The goal of this study was to investigate the exothermic decomposition reaction. The heat of the reaction was measured in multiple DSC experiments. During the decompo sition, vast quantities of gases are released. To measure the pressure rise, an explosion reactor was employed. Three reaction hypotheses have been tested. With the use of a
mathematical model one hypothesis could be proven. The material in uence on the de composition reaction was examined for PEEK, stainless steel and hastelloy C22. From the DSC measurements, a descriptive model and isoconversional kinetics were obtained.
Keywords
process safety, thermokinetics, hydroxylamine decomposition, thermal decomposition
Subject (DDC)
540 - Chemie
660 - Technische Chemie
620 - Ingenieurwissenschaften und Maschinenbau
660 - Technische Chemie
620 - Ingenieurwissenschaften und Maschinenbau
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Language
English
Created during FHNW affiliation
No
Strategic action fields FHNW
Publication status
Review
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License
Citation
WALTHERT, Florian, 2020. Thermokinetic model of hydroxylamine decomposition in the catalytic oxidation of ammonia with titanium silicalite-1. Muttenz: Hochschule für Life Sciences FHNW. Verfügbar unter: https://doi.org/10.26041/fhnw-3842