Patent · US Expired

Amorphous silica particles, a method for producing same, and catalyst thereof

US4689315A · kind A · utility

8Cited by

4References

14Claims

0Family size

Assignee

Redco NV · US

Inventors

Octavian Anton · Hulshout, BE
Pierre Jacobs · Gooik, BE
Georges Poncelet · Beauvechain, BE
Phillippe M. Jacques · Ciney, BE

Key dates

Filing date	Mar 27, 1985
Grant date	Aug 25, 1987
Priority date	—
Expiry date	Mar 27, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Amorphous, approximately spherical silica particles prepared by the acidic hydrolysis of an approximately spherical synthetic calcium silicate having a uniform microgranular structure on their external surfaces and a structure in the interior thereof which structure only weakly recall the original crystal needle structure of the starting material. The average external particle size is from 15 to 80 .mu.m, the apparent particle volume is from 1.3 to 3 cm.sup.3 /g, and the specific surface area is from 250 to 800 m.sup.2 /g. The silica particles are particularly suitable for use as catalyst supports.

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