Patent Number: 6,251,823

Title: Production of spherical catalyst carrier

Abstract: A process for producing spherical catalyst carrier of silica, silica-alumina composition, zirconia-alumina composition, titania-alumina composition, boria-alumina composition, or boria-silica-alumina composition which has almost the same pore characteristics as alumina hydrate gel, silica-alumina hydrate gel, zirconia-alumina hydrate gel, or titania-alumina hydrate gel (or alumina hydrate paste, boria-alumina hydrate paste, or boria-silica-alumina hydrate paste) as the major raw material, having uniform sphericity and smooth surface and homogeneity, and has a macropore volume that can be controlled includes adding a polysaccharide solution to any of alumina, silica-alumina, zirconia-alumina, or titania-alumina in the form of hydrate gel, or alumina, boria-alumina, or boria-silica-alumina in the form of hydrate paste, mixing them to form a slurry with a controlled concentration, dropping the slurry into a solution containing multivalent metal ions, thereby forming spherical hydrogel, and performing the additional steps of aging, washing, drying, and calcining.

Inventors: Yamaguchi; Toshio (Tokyo, JP), Uekusa; Kikoo (Chiba, JP)

Assignee: Sumitomo Metal Mining Co., Ltd.

International Classification: B01J 21/00 (20060101); B01J 21/04 (20060101); B01J 37/00 (20060101); B01J 35/08 (20060101); B01J 35/00 (20060101); B01J 032/00 ()

Expiration Date: 06/26/2018