Patent · US Expired

Silica-particles containing alumina, process for preparing same and the use thereof

US4720475A · kind A · utility

2Cited by

2References

7Claims

0Family size

Assignee

Redco NV · US

Inventors

Octavian Anton · Hulshout, BE
Dirk Van Wouwe · Tisselt, BE
Georges Poncelet · Beauvechain, BE
Pierre Jacobs · Gooik, BE
Johan Martens · Overijse, BE

Key dates

Filing date	Oct 20, 1986
Grant date	Jan 19, 1988
Priority date	—
Expiry date	Oct 20, 2006

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J37/0221
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Amorphous, substantially spherical silica particles obtained by acidic hydrolysis of substantially spherical synthetic crystalline calcium silicates having a size of from 20 to 120 microns are coated with a layer comprising silica and alumina. The silica particles obtained may be directly employed as catalysts for the oligomerization of olefins and, having been loaded with platinum, as hydrocracking catalysts.

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