Title: Single step solution combustion synthesis of crystalline transuranic-doped rare earth zirconate pyrochlores

Abstract

One-step solution combustion synthesis (SCS) methods for fabricating durable crystalline transuranic-doped rare earth zirconium pyrochlores are described. Methods are fast, amenable to upscaling, and present a simple strategy for producing crystalline ceramic materials that meet the minimum attractiveness criteria for special nuclear material. The methods include analysis of reactants and reaction conditions to select proper fuel as well as proper fuel content so as to encourage formation of the crystalline product in a single-step synthesis procedure.

Inventors:

Dandeneau, Christopher S.; Amoroso, Jake W.

Issue Date:

2020-03-17

Research Org.:

Savannah River Site (SRS), Aiken, SC (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1637823

Patent Number(s):

10590005

Application Number:

15/936,615

Assignee:

Savannah River Nuclear Solutions, LLC (Aiken, SC)

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

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

C01P2002/52 - containing elements as dopants
C01P2002/36 - pyrochlore-type

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

C01B21/20 - Nitrogen oxides

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

C01G25/006 - {Compounds containing, besides zirconium, two or more other elements, with the exception of oxygen or hydrogen}

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

C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS

C01F17/32 - oxide or hydroxide being the only anion, e.g. NaCeO2 or MgxCayEuO

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

C01B21/0422 - {by reduction}

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

C01G56/003 - {Compounds comprising, besides transuranic elements, two or more other elements, with the exception of oxygen or hydrogen
C01G25/00 - Compounds of zirconium

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DOE Contract Number:  

AC09-08SR22470

Resource Type:

Patent

Resource Relation:

Patent File Date: 03/27/2018

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE