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Control of the Al Distribution in the Framework of ZSM-5 Zeolite and Its Evaluation by Solid-State NMR Technique and Catalytic Properties
Abstract
The effects of the organic structure-directing agents (OSDAs) and Na cations for the synthesis of ZSM-5 on the location of Al atom in the framework as well as the acidic and catalytic properties were investigated. To achieve these purposes, ZSM-5 zeolites were synthesized by using four kinds of OSDAs including tetrapropylammonium hydroxide cations, dipropylamine, cyclohexylamine, and hexamethylenimine with or without Na cations. In situ FT-IR spectroscopy using CO as probe molecule was applied to the evaluation of the acid property of the ZSM-5 zeolites. The location of Al atoms was examined by high resolution 27 Al MAS and MQMAS NMR techniques. The constraint index (CI) has also been used to estimate the distribution of acid sites in the micropores. The location of acid sites was investigated based on the difference in the transition-state shape-selectivity through the cracking of n -hexane and 3-methylpentane. Furthermore, the cracking of various types of paraffins and the conversion of aromatic compounds were conducted to clarify the acid site distributions.
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Cites
Quantitatively Probing the Al Distribution in Zeolites
Vjunov, A., Fulton, J. L., Huthwelker, T., Pin, S., Mei, D., Schenter, G. K., Govind, N., Camaioni, D. M., Hu, J. Z., & Lercher, J. A. (2014) · Journal of the American Chemical Society · doi:10.1021/ja501361v · Cited by 251
Cited by
Regulation of the Si/Al ratios and Al distributions of zeolites and their impact on properties
Li, J., Gao, M., Yan, W., & Yu, J. (2023) · Chemical Science · doi:10.1039/d2sc06010h · Cited by 404
Engineering Zeolites for Catalytic Cracking to Light Olefins
Blay, V., Louis, B., Miravalles, R., Yokoi, T., Peccatiello, K. A., Clough, M., & Yilmaz, B. (2017) · ACS Catalysis · doi:10.1021/acscatal.7b02011 · Cited by 277
Self-citationZeolite (In)Stability under Aqueous or Steaming Conditions
Heard, C. J., Grajciar, L., Uhlík, F., Shamzhy, M., Opanasenko, M., Čejka, J., & Nachtigall, P. (2020) · Advanced Materials · doi:10.1002/adma.202003264 · Cited by 157
Introduction to the Zeolite Structure-Directing Phenomenon by Organic Species: General Aspects
Gómez-Hortigüela, L., & Camblor, M. Á. (2017) · Structure and Bonding · doi:10.1007/430_2017_8 · Cited by 35
Metadata
- Authors
- Yokoi, T., Mochizuki, H., Namba, S., Kondo, J. N., & Tatsumi, T.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-06-25
- Volume
- 119
- Issue
- 27
- Pages
- 15303-15315
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2288921401
- Cited by
- 331
- References
- 1
- FWCI
- 7.63
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yokoi, T., Mochizuki, H., Namba, S., Kondo, J. N., & Tatsumi, T. (2015). Control of the Al Distribution in the Framework of ZSM-5 Zeolite and Its Evaluation by Solid-State NMR Technique and Catalytic Properties. The Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.5b03289
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