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Extra‐Framework Aluminum‐Assisted Initial C−C Bond Formation in Methanol‐to‐Olefins Conversion on Zeolite H‐ZSM‐5 |
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| Authors: | Dr. Chao Wang Dr. Yueying Chu Prof. Dr. Jun Xu Dr. Qiang Wang Dr. Guodong Qi Pan Gao Xue Zhou Prof. Dr. Feng Deng |
| Affiliation: | 1. http://denggroup.org/;2. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, P. R. China;3. University of Chinese Academy of Sciences, Beijing, P. R. China |
| Abstract: | Surface methoxy species bound to an extra‐framework Al (SMS‐EFAL) was unambiguously identified by advanced 13C‐{27Al} double‐resonance solid‐state NMR technique in the methanol‐to‐olefins reaction on H‐ZSM‐5 zeolite. The high reactivity of the SMS‐EFAL leads to the formation of surface ethoxy species and ethanol as the key intermediates for ethene generation in the early reaction stage. A direct route for the initial C?C bond formation in ethene was proposed and corroborated by density functional theory calculations. |
| Keywords: | aluminum C− C bonds methanol conversion solid-state NMR zeolites |