C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
252/1.F
C08J 9/00 (2006.01) B01J 19/04 (1980.01)
Patent
CA 1068666
ABSTRACT OF THE DISCLOSURE The present invention provides partially pyrolyzed particles of a macroporous synthetic polymer having properties suitable for catalysis and a resistance to crushing and particle sloughage greater than that of known spherical adsorbent particles or that of granular activated carbon, comprising the product of controlled thermal degradation of a macroporous synthetic polymer containing a carbon-fixing moiety and a catalytic metal, and derived from one or more ethylenically unsaturated monomers, or monomers which may be condensed to yield macroporous polymers, or mixtures thereof, which partially pyrolyzed particles have: (a) at least 85% by weight of carbon; (b) multimodal pore distribution with macropores ranging in size from about 50 .ANG. to about 100,000 .ANG. in average critical dimension; and micropores ranging in size from about 4 .ANG. to about 50 .ANG. in average critical dimension; (c) a carbon to hydrogen atom ratio of between about 1.5:1 and about 20:1; and (d) up to 15% by weight of a metal. These partially pyrolyzed particles are useful as adsorbents in both gaseous and liquid media to remove impurities therefrom, and are also useful as catalysts in industrial and laboratory applications.
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