| Autor: |
QIN Rui, WANG Chao, WANG Qiang, HU Min, LI Jin-lin, XU Jun, DENG Feng |
| Jazyk: |
čínština |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Chinese Journal of Magnetic Resonance, Vol 39, Iss 04, Pp 439-447 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1000-4556 |
| DOI: |
10.11938/cjmr20222983 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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