Integral shaped replication supports

Details Integral shaped replication supports Integral shaped replication supports

B - Operations, Transporting

01

J

252/23

B01J 31/06 (2006.01) B01J 37/08 (2006.01)

Patent

CA 1163983

"INTEGRAL SHAPED REPLICATION SUPPORTS" ABSTRACT Integral shaped replication composites which may be useful for supports for catalysts or as adsorbents comprise a carbonaceous pyropolymeric structure which has been prepared by treating an inorganic support with an organic pyropolymer precursor and pyrolyzing the precursor to form a car- bonaceous pyropolymer possessing recurring units containing at least carbon and hydrogen atoms on the surface of the support. This carbonaceous pyro- polymer will duplicate the physical shape and dimensions of the inorganic support as well as a substantial portion of the pore structure thereof. The integral shaped replication will possess an ABD which is about 25% to 100% of the ABD of the inorganic support, and have a crush strength of from about 0.5 to about 14 kilograms. The composite comprising the carbonaceous pyro- polymer on the surface of the support may then be leached with an acid or base to remove the inorganic support, thus leaving a shaped replication of particle aggregates. If so desired, the shaped replication may be further treated by depositing at least one inorganic oxide on each surface of the replication.

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