Formation and Reactivity of Surface Methoxy Species in Methanol Conversion over SSZ-13 Zeolite

QIN Rui; WANG Chao; WANG Qiang; HU Min; LI Jin-lin; XU Jun; DENG Feng

doi:10.11938/cjmr20222983

Chinese Journal of Magnetic Resonance (Dec 2022)

Formation and Reactivity of Surface Methoxy Species in Methanol Conversion over SSZ-13 Zeolite

QIN Rui,
WANG Chao,
WANG Qiang,
HU Min,
LI Jin-lin,
XU Jun,
DENG Feng

Affiliations

QIN Rui: 1. Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China 2. National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
WANG Chao: National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
WANG Qiang: National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
HU Min: 1 National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China
LI Jin-lin: Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan 430074, China
XU Jun: National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China
DENG Feng: National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China

DOI: https://doi.org/10.11938/cjmr20222983
Journal volume & issue: Vol. 39, no. 04
pp. 439 – 447

Abstract

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The formation and reactivity of surface methoxy species in methanol reaction over SSZ-13 zeolite were investigated by using solid-state nuclear magnetic resonance (NMR) technique. The surface methoxy species bound to Brønsted acid sites was identified by two-dimensional 13C-27Al heteronuclear multiple quantum coherence (HMQC) NMR experiment. The formation of another surface methoxy species bound to Lewis acid sites was also observed. The combination of 13C NMR and gas chromatography-mass spectrometry (GC-MS) showed that the two kinds of surface methoxy species possess high reactivity, contributing to the formation of hydrocarbon pool species and hydrocarbons via the hydrocarbon pool mechanism.

Published in Chinese Journal of Magnetic Resonance

ISSN: 1000-4556 (Print)
Publisher: Science Press
Country of publisher: China
LCC subjects: Science: Physics: Electricity and magnetism
Website: http://121.43.60.238/bpxzz/EN/1000-4556/home.shtml

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