Title: Formulation and method for preparing gels comprising hydrous hafnium oxide

Abstract

Formulations useful for preparing hydrous hafnium oxide gels contain a metal salt including hafnium, an acid, an organic base, and a complexing agent. Methods for preparing gels containing hydrous hafnium oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including hafnium, an acid, an organic base, and a complexing agent.

Inventors:

Collins, Jack L; Hunt, Rodney D; Montgomery, Frederick C

Issue Date:

2013-08-06

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1089400

Patent Number(s):

8501825

Application Number:

12/683,942

Assignee:

ORO

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/0211 - {Compounds of Ti, Zr, Hf}
B01J20/06 - comprising oxides or hydroxides of metals not provided for in group B01J20/04
B01J20/28047 - {Gels}
B01J39/10 - Oxides or hydroxides

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B25/372 - {of titanium, vanadium, zirconium, niobium, hafnium or tantalum}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G27/02 - Oxides
C01G27/04 - Halides

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/88 - by thermal analysis data, e.g. TGA, DTA, DSC
C01P2004/02 - obtained by optical microscopy
C01P2004/32 - Spheres
C01P2004/61 - Micrometer sized, i.e. from 1-100 micrometer
C01P2006/11 - Powder tap density
C01P2006/21 - Attrition-index or crushing strength of granulates

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DOE Contract Number:  

AC05-000R22725

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY