The role of water in zeolite pores: the structure/property relationship for ion exchange

Tina M. Nenoff; Nathan W. Ockwig; Todd M. Alam; Monika Hartl; Luke L. Daemen

doi:10.1016/S0167-2991(07)80922-0

The role of water in zeolite pores: the structure/property relationship for ion exchange

Tina M. Nenoff, Nathan W. Ockwig, Todd M. Alam, Monika Hartl, Luke L. Daemen

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

The role of occluded water in the ion exchange selectivity of molecular sieves is studied in detail with Sandia Octahedral Molecular Sieves (SOMS) . SOMS exhibit a high selectivity for divalent cations only when the framework Nb (V) are substituted by M (IV) atoms. Vibrational dynamics of the water molecules of the SOMS with varying charge balancing cations and M atoms are studied by inelastic neutron scattering (INS) measurements. The experimental INS spectra were compared with those of ice Ih to characterize the structural changes induced by confinement on the H₂O hydrogen-bonding network. Data indicate that with increasing M (IV) content, a tendency of water molecules to restore the bulk-like arrangements and increased solvation effects on the channel cations [1]. Data are complimented with further characterization by MAS NMR.

Original language	English
Title of host publication	From Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference
Publisher	Elsevier Inc.
Pages	790-795
Number of pages	6
Edition	A
ISBN (Print)	0444530681, 9780444530684
DOIs	https://doi.org/10.1016/S0167-2991(07)80922-0
State	Published - 2007
Externally published	Yes

Publication series

Name	Studies in Surface Science and Catalysis
Number	A
Volume	170
ISSN (Print)	0167-2991

Funding

Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the U.S. DOE's National Nuclear Security Administration under contract DE-AC04-94AL85000. This work has benefited from the use of the Manuel Lujan, Jr. Neutron Scattering Center at LANSCE, which is funded by the Department of Energy's Office of Basic Energy Sciences. Los Alamos National Laboratory is operated by Los Alamos National Security LLC under DOE Contract DE-AC52-06NA25396.

Funders	Funder number
Office of Basic Energy Sciences
U.S. Department of Energy
National Nuclear Security Administration	DE-AC04-94AL85000
Los Alamos National Laboratory	DE-AC52-06NA25396

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10.1016/S0167-2991(07)80922-0

Cite this

Nenoff, T. M., Ockwig, N. W., Alam, T. M., Hartl, M., & Daemen, L. L. (2007). The role of water in zeolite pores: the structure/property relationship for ion exchange. In From Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference (A ed., pp. 790-795). (Studies in Surface Science and Catalysis; Vol. 170, No. A). Elsevier Inc.. https://doi.org/10.1016/S0167-2991(07)80922-0

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Nenoff, TM, Ockwig, NW, Alam, TM, Hartl, M & Daemen, LL 2007, The role of water in zeolite pores: the structure/property relationship for ion exchange. in From Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference. A edn, Studies in Surface Science and Catalysis, no. A, vol. 170, Elsevier Inc., pp. 790-795. https://doi.org/10.1016/S0167-2991(07)80922-0

The role of water in zeolite pores: the structure/property relationship for ion exchange. / Nenoff, Tina M.; Ockwig, Nathan W.; Alam, Todd M. et al.
From Zeolites to Porous MOF Materials - The 40th Anniversary of International Zeolite Conference. A. ed. Elsevier Inc., 2007. p. 790-795 (Studies in Surface Science and Catalysis; Vol. 170, No. A).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

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The role of water in zeolite pores: the structure/property relationship for ion exchange

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