Initial Carbon-Carbon Bond Formation during the Early Stages of the Methanol-to-Olefin Process Proven by Zeolite-Trapped Acetate and Methyl Acetate

Abhishek Dutta Chowdhury, Klaartje Houben, Gareth T Whiting, Mohamed Mokhtar, Abdullah M Asiri, Shaeel A Al-Thabaiti, Suliman N Basahel, Marc Baldus, Bert M Weckhuysen

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Methanol-to-olefin (MTO) catalysis is a very active field of research because there is a wide variety of sometimes conflicting mechanistic proposals. An example is the ongoing discussion on the initial C-C bond formation from methanol during the induction period of the MTO process. By employing a combination of solid-state NMR spectroscopy with UV/Vis diffuse reflectance spectroscopy and mass spectrometry on an active H-SAPO-34 catalyst, we provide spectroscopic evidence for the formation of surface acetate and methyl acetate, as well as dimethoxymethane during the MTO process. As a consequence, new insights in the formation of the first C-C bond are provided, suggesting a direct mechanism may be operative, at least in the early stages of the MTO reaction.

Original languageEnglish
Pages (from-to)15840-15845
Number of pages6
JournalAngewandte Chemie-International Edition
Volume55
Issue number51
DOIs
Publication statusPublished - 19 Dec 2016

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