Process for modifying the pore volume distribution of alumina base catalyst supports
US4001144A · kind A · utility
15Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1975 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Dec 19, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/67
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Modification of the pore volume distribution of an alumina base catalyst support is accomplished by treating an alumina precursor of chi-rho-eta structure with an aqueous ammonium carbonate or bicarbonate solution under pressure at about 100.degree.-160.degree. C for 10-24 hours, followed by drying and thermal activation at a temperature of at least about 500.degree. C. The resulting support will possess more than about 70% of its total pore volume in the 45-300 angstrom unit pore diameter range. This pore volume distribution renders it particularly suitable for use as a catalyst carrier for hydrodesulfurization purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.