Direct Proof of Volatile and Adsorbed Hydrocarbons on Solid Catalysts by Complementary NMR Methods

Abstract

In this paper, both volatile and strongly adsorbed products of heavy hydrocarbon conversion on a zeolite were investigated by gas-phase and solid-state NMR. For this purpose, the reactions were carried out in sealed glass tubes under vacuum to collect the volatile reaction products. This procedure is demonstrated for pure 2-ethylphenol conversion on ultra-stabilized zeolite Y leading to both the formation of light alkanes and deoxygenation products. The above-mentioned method is useful to improve the understanding of heavy hydrocarbon conversion under batch conditions.