Use of hollow glass spheres in conjunction with rehydratable alumina for making low density catalyst support beads
US4292206A · kind A · utility
18Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1980 |
| Grant date | Sep 29, 1981 |
| Priority date | — |
| Expiry date | Aug 22, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/51
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
For making low density alumina or silica-alumina beads as catalyst support particles for auto-exhaust catalysts, hollow glass spheres of very small diameter are incorporated in the alumina powder mix before it is formed into beads and calcined. The beads may be finished with a surface coat of alumina without the microspheres to improve resistance to abrasion. Preferred beads are made with rehydratable alumina powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.