Niobate-based octahedral molecular sieves
Abstract
Niobate-based octahedral molecular sieves having significant activity for multivalent cations and a method for synthesizing such sieves are disclosed. The sieves have a net negatively charged octahedral framework, comprising niobium, oxygen, and octahedrally coordinated lower valence transition metals. The framework can be charge balanced by the occluded alkali cation from the synthesis method. The alkali cation can be exchanged for other contaminant metal ions. The ion-exchanged niobate-based octahedral molecular sieve can be backexchanged in acidic solutions to yield a solution concentrated in the contaminant metal. Alternatively, the ion-exchanged niobate-based octahedral molecular sieve can be thermally converted to a durable perovskite phase waste form.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174407
- Patent Number(s):
- 6596254
- Application Number:
- 09/876,903
- Assignee:
- Sandia Corporation (Albuquerque, NM)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Nenoff, Tina M., and Nyman, May D. Niobate-based octahedral molecular sieves. United States: N. p., 2003.
Web.
Nenoff, Tina M., & Nyman, May D. Niobate-based octahedral molecular sieves. United States.
Nenoff, Tina M., and Nyman, May D. Tue .
"Niobate-based octahedral molecular sieves". United States. https://www.osti.gov/servlets/purl/1174407.
@article{osti_1174407,
title = {Niobate-based octahedral molecular sieves},
author = {Nenoff, Tina M. and Nyman, May D.},
abstractNote = {Niobate-based octahedral molecular sieves having significant activity for multivalent cations and a method for synthesizing such sieves are disclosed. The sieves have a net negatively charged octahedral framework, comprising niobium, oxygen, and octahedrally coordinated lower valence transition metals. The framework can be charge balanced by the occluded alkali cation from the synthesis method. The alkali cation can be exchanged for other contaminant metal ions. The ion-exchanged niobate-based octahedral molecular sieve can be backexchanged in acidic solutions to yield a solution concentrated in the contaminant metal. Alternatively, the ion-exchanged niobate-based octahedral molecular sieve can be thermally converted to a durable perovskite phase waste form.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 22 00:00:00 EDT 2003},
month = {Tue Jul 22 00:00:00 EDT 2003}
}
Works referenced in this record:
The heteropoly-12-niobomanganate(IV) anion
journal, January 1967
- Dale, B. W.; Pope, M. T.
- Chemical Communications (London), Issue 16
A New Family of Octahedral Molecular Sieves: Sodium Ti/Zr IV Niobates
journal, February 2001
- Nyman, May; Tripathi, Akhilesh; Parise, John B.
- Journal of the American Chemical Society, Vol. 123, Issue 7