Title:
PROCESS FOR THE MANUFACTURE OF SHPERICAL BODIES BY SELECTIVE AGGLOMERATION
Document Type and Number:
WIPO Patent Application WO1988000094
Kind Code:
A1
Abstract:
Preparation of small substantially spherical solid catalysts. More particularly, the process produces strong solid substantially spherical agglomerates comprising inorganic materials, which process comprises: (a) mixing at high speed a portion of an inorganic material in the form of hydrophilic micron-sized particles in a water-immiscible liquid thereby forming a dispersion; (b) gradually adding to the dispersion an aqueous phase while continuing the high speed mixing until substantially spherical microagglomerates form within the water-immiscible liquid; (c) subjecting the microagglomerates to agitation in a vessel having a hydrophobic inner surface at a speed low enough to achieve substantially uniformly sized spherical agglomerates; (d) drying the agglomerates to produce hardened substantially spherical uniformly sized agglomerates; and (e) optionally further separating the agglomerates by size. Optionally, the aqueous phase in step (b) may include the soluble salts of catalytic metals, acids and bases and/or colloidal-sized inorganic particles. These spherical particles have diameters generally between 1 to 5 millimeters and are useful as catalysts, or catalyst supports, where the catalytic components are subsequently deposited on the support.
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Inventors:
RAINIS ANDREW (US)
Application Number:
PCT/US1986/001406
Publication Date:
January 14, 1988
Filing Date:
July 02, 1986
Export Citation:
Assignee:
CHEVRON RES (US)
International Classes:
B01J37/00; (IPC1-7): B01J35/08
Foreign References:
| US2474910A | 1949-07-05 | |||
| US3296151A | 1967-01-03 | |||
| US3515684A | 1970-06-02 | |||
| US4507396A | 1985-03-26 |
Other References:
See also references of EP 0277117A1
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