Method of synthesizing high surface area unagglomerated noble metal pyrochlore compounds
CA 1193420 A · Owner: Exxon Research And Engineering Company · Inventors: Horowitz, Harold S.; Lewandowski, Joseph T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electrically conductive pyrochlore compounds of high surface area and unagglomerated form having the formula, A2B2-xAxO7-Y, may be prepared wherein A is selected from lead bismuth, and mixtures thereof, B is selected from ruthenium iridium and mixtures thereof, O < x ? 1.0 and O ? y ? 1. The method involves (1) synthesizing the pyrochlores in an aqueous alkaline reaction medium having a pH of at least about 12.0 and in the presence of an oxygen source (2) displacing the reaction medium with water (3), atomizing the resultant slurry and (4) freeze drying the resultant product. The pyrochlore compounds thus prepared have a variety of applications including use as oxygen electrodes in …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted September 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2002.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.