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Title: Low-temperature synthesis of actinide tetraborides by solid-state metathesis reactions

Abstract

The synthesis of actinide tetraborides including uranium tetraboride (UB.sub.4), plutonium tetraboride (PuB.sub.4) and thorium tetraboride (ThB.sub.4) by a solid-state metathesis reaction are demonstrated. The present method significantly lowers the temperature required to .ltoreq.850.degree. C. As an example, when UCl.sub.4 is reacted with an excess of MgB.sub.2, at 850.degree. C., crystalline UB.sub.4 is formed. Powder X-ray diffraction and ICP-AES data support the reduction of UCl.sub.3 as the initial step in the reaction. The UB.sub.4 product is purified by washing water and drying.

Inventors:
 [1];  [1];  [1]
  1. Los Alamos, NM
Issue Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
935573
Patent Number(s):
6830738
Application Number:
10/115,087
Assignee:
The United States of America as represented by the United States Department of Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Lupinetti, Anthony J, Garcia, Eduardo, and Abney, Kent D. Low-temperature synthesis of actinide tetraborides by solid-state metathesis reactions. United States: N. p., 2004. Web.
Lupinetti, Anthony J, Garcia, Eduardo, & Abney, Kent D. Low-temperature synthesis of actinide tetraborides by solid-state metathesis reactions. United States.
Lupinetti, Anthony J, Garcia, Eduardo, and Abney, Kent D. Tue . "Low-temperature synthesis of actinide tetraborides by solid-state metathesis reactions". United States. https://www.osti.gov/servlets/purl/935573.
@article{osti_935573,
title = {Low-temperature synthesis of actinide tetraborides by solid-state metathesis reactions},
author = {Lupinetti, Anthony J and Garcia, Eduardo and Abney, Kent D},
abstractNote = {The synthesis of actinide tetraborides including uranium tetraboride (UB.sub.4), plutonium tetraboride (PuB.sub.4) and thorium tetraboride (ThB.sub.4) by a solid-state metathesis reaction are demonstrated. The present method significantly lowers the temperature required to .ltoreq.850.degree. C. As an example, when UCl.sub.4 is reacted with an excess of MgB.sub.2, at 850.degree. C., crystalline UB.sub.4 is formed. Powder X-ray diffraction and ICP-AES data support the reduction of UCl.sub.3 as the initial step in the reaction. The UB.sub.4 product is purified by washing water and drying.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {12}
}

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Works referenced in this record:

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A polymer precursor route to metal borides
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