Insights in Analytical Electrochemistry Open Access

The gas chromatographic analysis of the reaction products of the partial isobutene oxidation as a two-phase process

Joint Event:8^th Annual Congress on Analytical and Bioanalytical Techniques & 14^th International Conference and Exhibition on Pharmaceutical Formulations

August 28-30, 2017 Brussels, Belgium

Thomas Willms

Helmholtz-Zentrum Dresden-Rossendorf, Germany

Keynote: Insights Anal Electrochem

Abstract:

The partial oxidation of isobutane to t-butyl hydroperoxide (TBHP) has been studied analytically for the first time as a two-phase process in a capillary micro reactor. In order to obtain detailed information on products, yield, selectivity and reaction pathways, the products have been analysed by GC-MS. An Rxi-05-ms column and a PTV-injector have been used to separate the liquid products. The liquid products identified by MS were TBHP, di-t-butyl peroxide (DTBP), t-butanol (TBA), and propanone as main products as well as further by-products e.g. methanal, isopropanol, isobutanol and isobutanal in minor quantities. The liquid products have been obtained by quenching the reaction and vaporizing the isobutane afterwards by pressure reduction using a mass flow controller allowing a constant mass flow. The gaseous phase has been also analysed. Apart from the educts, isobutene has been found.