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AuthorIssaA.A.
AuthorElazazyM.S.
AuthorLuytA.S.
Available date2019-10-03T10:50:03Z
Publication Date2018
Publication NameInternational Journal of Chemical Kinetics
ResourceScopus
ISSN5388066
URIhttp://dx.doi.org/10.1002/kin.21219
URIhttp://hdl.handle.net/10576/12021
AbstractGas chromatography (GC) was used to study the kinetics of the 3-cyanopropyl triethoxysilane (CTES) polymerization. The reaction is a consecutive complex reaction that depends mainly on the kinetics of the first hydrolyzed leaving group. The activation energy of CTES hydrolysis is 20 and 58�kJ mol?1 in alkaline and acidic media, respectively. The activation energy of ethanol production ranged from 22 to 55�kJ mol?1 according to the catalyst type and concentration. Generally, the reaction is an endothermic reaction in an acidic medium, whereas it is exothermic in an alkaline medium, depending on the catalyst concentration. Moreover, the reaction is spontaneous at high temperatures in an acidic medium. The rate constant is related to the catalyst concentration with empirical formulas depending on the Arrhenius equation. The rate constant increases non-linearly (to the power 2) with the concentration of water in an acidic medium, whereas it behaves differently in an alkaline medium and depends on the initial concentrations of CTES and the catalyst.
Languageen
PublisherJohn Wiley and SonsInc.
Subjectcondensation
gaschromatography
hydrolysis
polymerizationmechanism
silane
TitlePolymerization of 3-cyanopropyl (triethoxy) silane: A kinetic study using gas chromatography
TypeArticle
Pagination846-855
Issue Number12
Volume Number50
dc.accessType Abstract Only


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