The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.
Vibrational Spectroscopy of NH4+ Ions in Zeolitic Materials: An IR Study
Abstract
It is now well accepted that the interaction of NH 3 with the Brönsted acid sites of zeolites leads to the formation of NH 4 + ions that are strongly H-bonded to the basic oxygens of the lattice; nevertheless, unambiguous evidence of their local siting is still lacking. In this contribution we report a detailed assignment of the IR vibrational features of NH 4 + ions which reveals that mainly bidentate and tridentate species with various local symmetry are stabilized inside the cages and channels of ZSM-5, MORD, β, SAPO-34, and Y zeolites. Tetradentate species, mainly in MORD, are also found. In addition, it is shown that Fermi-type resonance interactions lead to the appearance of several bands in the ν(NH) stretching region of the vibrational spectrum that do not correspond to different NH oscillators. Finally, the solvation of NH 4 + in the presence of excess ammonia is also investigated, and the IR manifestations, observed when reversibly adsorbed NH 3 is present in the channels and cavities, are explained in terms of N 2 H 7 + and N 2 H 7 + · n NH 3 structures.
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Cites
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Self-citationOn the Nature of Water Bound to a Solid Acid Catalyst
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Self-citationAmmonium in zeolites: coordination and solvation effects
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N2 Adsorption at 77 K on H-Mordenite and Alkali-Metal-Exchanged Mordenites: An IR Study
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Self-citationNH3as a Probe Molecule for NMR and IR Study of Zeolite Catalyst Acidity
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Electronic Structure Calculations of Ammonia Adsorption in H-ZSM-5 Zeolites
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On the interpretation of the NH3-TPD patterns of H-ZSM-5 and H-mordenite
Lónyi, F., & Valyon, J. (2001) · Microporous and Mesoporous Materials · doi:10.1016/s1387-1811(01)00389-4 · Cited by 554
Organic Cation‐Dependent Degradation Mechanism of Organotin Halide Perovskites
Wang, F., Ma, J., Xie, F., Li, L., Chen, J., Fan, J., & Zhao, N. (2016) · Advanced Functional Materials · doi:10.1002/adfm.201505127 · Cited by 285
Modification of acid sites in ZSM-5 by ion-exchange: An in-situ FTIR study
Wu, W., & Weitz, E. (2014) · Applied Surface Science · doi:10.1016/j.apsusc.2014.07.194 · Cited by 106
Theoretical Modeling of Zeolite Nanoparticle Surface Acidity for Heavy Oil Upgrading
Stoyanov, S. R., Gusarov, S., Kuznicki, S. M., & Kovalenko, A. (2008) · The Journal of Physical Chemistry C · doi:10.1021/jp075688h · Cited by 61
Baitahe, R., & Boonchom, B. (2020) · International Journal of Thermophysics · doi:10.1007/s10765-020-2610-5 · Cited by 6
Metadata
- Authors
- Zecchina, A., Marchese, L., Bordiga, S., Pazè, C., & Gianotti, E.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 1997-11-01
- Volume
- 101
- Issue
- 48
- Pages
- 10128-10135
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2029026291
- Cited by
- 301
- References
- 14
- FWCI
- 2.77
- Type
- journal article
- Language
- en
- Open access
- closed
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