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Characterization of the Surface Acidity of MFI Zeolite Nanosheets by 31P NMR of Adsorbed Phosphine Oxides and Catalytic Cracking of Decalin
Abstract
MFI zeolite nanosheets tailored to 2.5-nm thickness were synthesized using a surfactant-type zeolite structure-directing agent, [C 22 H 45 –N + (CH 3 ) 2 –C 6 H 12 –N + (CH 3 ) 2 –C 6 H 13 ](Br – ) 2 . The zeolite nanosheets possessed Brønsted acid sites on their external surfaces as well as in the internal micropore walls. The acid strength and concentration was characterized by the 31 P NMR signals of the adsorbed trimethylphosphine oxide and tributylphosphine oxide. The 31 P NMR investigation identified three types of Brønsted acid sites with different strengths on external surfaces; there were four types inside the micropores. A linear correlation has been established between the number of the external strongest acid sites and the catalytic activity in decalin cracking for the MFI zeolite catalysts investigated in this work.
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Cited by
New trends in tailoring active sites in zeolite-based catalysts
Shamzhy, M., Opanasenko, M., Concepción, P., & Martínez, A. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00887f · Cited by 508
Zheng, A., Liu, S.-B., & Deng, F. (2017) · Chemical Reviews · doi:10.1021/acs.chemrev.7b00289 · Cited by 365
The ADOR mechanism for the synthesis of new zeolites
Eliášová, P., Opanasenko, M., Wheatley, P. S., Shamzhy, M., Mazur, M., Nachtigall, P., Roth, W. J., Morris, R. E., & Čejka, J. (2015) · Chemical Society Reviews · doi:10.1039/c5cs00045a · Cited by 340
Treps, L., Gomez, A., de Bruin, T., & Chizallet, C. (2020) · ACS Catalysis · doi:10.1021/acscatal.9b05103 · Cited by 63
Metadata
- Authors
- Seo, Y., Cho, K., Jung, Y., & Ryoo, R.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-03-13
- Volume
- 3
- Issue
- 4
- Pages
- 713-720
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2043680163
- Cited by
- 176
- References
- 0
- FWCI
- 9.11
- Type
- journal article
- Language
- en
- Open access
- closed
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