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

United States Patent

December 14, 2004
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
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 C. As an example, when UCl.sub.4 is reacted with an excess of MgB.sub.2, at 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.
Lupinetti; Anthony J. (Los Alamos, NM), Garcia; Eduardo (Los Alamos, NM), Abney; Kent D. (Los Alamos, NM)
The United States of America as represented by the United States Department of Energy (Washington, DC)
10/ 115,087
April 4, 2002
This invention was made with government support under Contract No. W7405-ENG-36 awarded by the U.S. Department of Energy to The Regents of The University of California. The government has certain rights in the invention.