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AssigneeW. R. Grace & Co.-Conn.
InventorsJames G. Miller, Michael J. Wax, Richard F. Wormsbecher, Leo B. Aller, Donald R. Durham, Alan B. Chmurny
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Porous bodies are produced which are suitable for use as supports for catalysts, including living cells, such as bacteria and which are upset resistant to acids and bases. The bodies have a significantly large average pore diameter of about 0.5 to 100 microns, (i.e. 5,000 to 1,000,000 .ANG.) and a total pore volume of about 0.1 to 1.5 cc/g with the large pores contributing a pore volume of from about 0.1 to 1.0 cc/g. The bodies are made by preparing a mixture of ultimate particles containing a zeolite and one or more optional ingredients such as inorganic binders, extrusion or forming aids, burnout agents, or a forming liquid, such as water. In a preferred embodiment, the ultimate particles are formed by spray drying.
A macroporous, upset resistant, inorganic oxide catalyst support, which support comprises a plurality of inorganic oxide particles having a particle size from 1 to 1000 microns and containing 0.1% to 80% zeolite and an inorganic binder which binds said inorganic particles together in a manner such that macropores are formed throughout the catalyst support, wherein said catalyst support has a total pore volume of 0.1 to 1.5 cc/g;
A method of a making macroporous, upset resistant, inorganic oxide catalyst support comprising;
A catalyst for the biotreatment of an aqueous waste stream or contaminated vapor comprising a catalyst support having thereon a catalytically effective amount of a micoorganism, which catalyst support comprises a plurality of inorganic oxide particles having a particle size from 1 to 1000 microns and containing 0.1% to 80% zeolite, and an inorganic binder which binds said inorganic oxide particles together in a manner such that macropores are formed throughout the catalyst support, wherein said catalyst support has a total pore volume of 0.1 to 1.5 cc/g;
A method of preparing a process upset resistant catalyst for the biotreatment of aqueous waste streams or the biofiltration of contaminated vapors comprising providing a catalyst support that is resistant to process upsets and colonizing a microorganism on at least one surface of the catalyst support, wherein said catalyst support comprises a plurality of inorganic oxide particles having a particle size from 1 to 1000 microns and containing 0.1% to 80% zeolite, and an inorganic binder which binds said inorganic oxide particles together in a manner such that macropores are formed throughout the catalyst support, wherein said catalyst support has a total pore volume of 0.1 to 1.5 cc/g;
A method for biotreatment of an aqueous waste stream or contaminated vapor with a catalyst which is tolerant to acid and base upsets comprising treating the waste stream or vapor with a macroporous, upset resistant catalyst support having thereon a catalytically effective amount of a microorganism, which catalyst support comprises a plurality of inorganic oxide particles having a particle size from 1 to 1000 microns and containing 0.1% to 80% zeolite, and an inorganic binder which binds said inorganic oxide particles together in a manner such that macropores are formed throughout the catalyst support, wherein said catalyst support has a total pore volume of 0.1 to 1.5 cc/g;
Dependencies are inferred from the claim text.