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Title: 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 C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
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 = {2003},
month = {7}
}

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Works referenced in this record:

The heteropoly-12-niobomanganate(IV) anion
journal, January 1967


A New Family of Octahedral Molecular Sieves:  Sodium Ti/Zr IV Niobates
journal, February 2001