C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/151
C01B 9/08 (2006.01) B01J 27/12 (2006.01) C01B 11/24 (2006.01) C01F 5/28 (2006.01) C01F 7/50 (2006.01) C01G 1/06 (2006.01) C01G 23/02 (2006.01) C01G 35/02 (2006.01) C01G 43/06 (2006.01)
Patent
CA 1108377
(U.S. 869,776) ABSTRACT OF THE DISCLOSURE A method is described for the preparation of high surface area metal fluorides and metal oxyfluorides comprising reacting high surface area metal oxides with a fluoro- carbon vapor wherein the fluorocarbon is selected from the group consisting of CH4-QFQ wherein Q is 1 to 3 and totally or partially fluorinated C2-C6 alkanes, alkenes and alkynes and C5-C6 cyclic alkanes, preferably fluoroform (CHF3) where- in the metal oxides and the fluorocarbon vapors are contacted at a temperature of from about 300 to about 800°C., for a time sufficient to effect the essentially complete conversion of the metal oxides into metal fluorides or the partial conversion of the metal oxides into metal oxyfluorides. The metal oxides may also be utilized in combination with alumina and silica. The fluorocarbon partial pres- sure in the treatment vapor may be in the range of from about 0.001 to about 100atmosphere. By the practice of the instant invention high surface area metal fluoride extrudates are prepared by the conversion of metal oxide extrudate, par- ticularly aluminum fluoride extrudates from alumina extrudates.
317013
Eggert Joseph J.
Mcvicker Gary B.
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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