Patent · US Expired

Preparation of spheroidal alumina particles

US3993596A · kind A · utility

2Cited by

4References

9Claims

0Family size

Assignee

Labofina, S.A. · BE

Inventors

Jacques Andre · Sainte-Geneviève-des-Bois, FR
Raymond M. Cahen · Brussels, BE
Henri Robert Debus · Meise, BE
Rene Odon Lammers · Brussels, BE
Hugo Van Thillo · Grimbergen, BE

Key dates

Filing date	Feb 10, 1975
Grant date	Nov 23, 1976
Priority date	—
Expiry date	Feb 10, 1995

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/52
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing catalysts in the form of beads comprising at least a catalytic agent and an alumina carrier, said process comprising polymerizing in a hot and substantially water-immiscible fluid, an aqueous mixture which comprises alumina hydrogel, alumina hydrosol and a compound capable of generating a catalytic agent and a water soluble monomer whose uncross-linked polymer is water soluble or forms a gel, such aqueous mixture being dispersed as droplets into the hot fluid, recovering beads from said water-immiscible fluid and drying and calcining said beads.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.