Hydrocarbon conversion on ZSM-5 in the presence of N 2O: relative reactivity and routes of product formation studied by GC-MS and 13C NMR

Abstract

Oxidative conversion of methane, ethane, propane, benzene, hydrogen and their binary mixtures R1–R2–N 2O–He (where R1, R2 are substances under study) were studied on HZSM-5 at 350–450°C. Relative reactivities were estimated, rate of conversion of hydrocarbons correlating with the strength of CH bond. 13C label distribution in the product of 13CH 4–C 6H 6–N 2O feed was studied by GC-MS, 1H and 13C NMR. It was shown that methane was capable to alkylate the aromatic ring under reaction condition, giving toluene and xylenes from benzene.