High surface area ThO.sub.2 catalyst and method of preparing it

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865536

Colmenares, Carlos A ^[1]; Somorjai, Gabor A ^[2]; Maj, Joseph J ^[3]

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1. Alamo, CA
2. Berkeley, CA
3. Walnut Creek, CA

A ThO.sub.2 catalyst having a high surface area of about 80-125 m.sup.2 /g is synthesized. The compound is synthesized by simultaneously mixing an aqueous solution of ThNO.sub.3 (NO.sub.3).sub.4.4H.sub.2 O with an aqueous solution of Na.sub.2 CO.sub.3.H.sub.2 O, to produce a solution and solid ThOCO.sub.3. The solid ThOCO.sub.3 is separated from the solution, and then calcined at a temperature of about 225.degree.-300.degree. C. for about 40-55 hours to produce ThO.sub.2. The ThO.sub.2 catalyst produced includes Na present as a substitutional cation in an amount equal to about 5-10 atom percent.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4532230
• OSTI ID: 865536
• Country of Publication: United States
• Language: English

Related Subjects

surface
catalyst
method
preparing
80-125
synthesized
compound
simultaneously
mixing
aqueous
solution
thno
4h
na
produce
solid
thoco
separated
calcined
temperature
225
degree
-300
40-55
hours
produced
substitutional
cation
amount
equal
5-10
atom
percent
amount equal
atom percent
aqueous solution
simultaneously mix
/502/423/