Union Carbide Corporation

Willis W Weber

Thomas J Weeks, Jr

Richard F Hill

Joseph A Herbst

Donald F Best

Richard J Hinchey

Albert C Frost

Alexander J Caglione

High purity alpha-alumina bodies useful as catalyst supports are made by peptizing boehmite alumina in an acidic mixture containing fluoride anions, extruding the peptized alumina into shaped bodies and drying and calcining the bodies. The alpha-alumina bodies are characterized by a narrow pore-size distribution, having 85 percent of the total pore volume comprising pores of a diameter of from 10,000 to 200,000 Angstroms and by a surface area of less than one square meter per gram.

Process of preparing high purity alumina bodies

Crystalline synthetic zeolite, denoted 'LZ-200', has an anhydrous composition in terms of mole-ratios of oxides of:

Zeolite LZ-200

Aluminum alkoxides are prepared by the reaction of impure aluminum and monohydric alcohols in a process wherein impure metallic aluminum particles are continuously fed at a metered rate into a stoichiometric excess of alcohol. The novel apparatus disclosed permits the continuous introduction of the aluminum particles into the reactor and removal of non-reactive impurities through columns of ambient temperature alcohol which avoids contact of atmospheric oxygen with the reaction products.

Apparatus for preparing aluminum alkoxides

Process for preparing aluminum alkoxides

Alumina is produced by the hydrolysis of aluminum alkoxide in a continuous process in which the hydrolysis reaction, the aging of hydrated alumina product and the stripping of occluded by-product alcohol from the alumina particles is accomplished in the same reaction vessel.

Process for producing alumina

Molecular sieve catalyst compositions having decreased catalytic activity as a result of accumulating more than 2 weight-% carbonaceous coke deposits are restored essentially to their pre-coked activity by heating an essentially homogeneous mixture of particles thereof with particles of an inert refractory material in the weight ratio of from 1:2 to 1:10 in air at a temperature of from 500.degree. C. to 725.degree. C. for a period of time sufficient to decrease the carbonaceous coke to less than two weight percent.

Growing community of inventors

South Salem, NY, United States of America

Willis W Weber