Transition metal oxide acid catalysts
US4440872A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1981 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Dec 18, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Acid catalysts comprising a catalytic metal oxide component wherein said metal is selected from the group consisting essentially of (a) tungsten, niobium and mixtures thereof and (b) mixtures of (a) with tantalum, hafnium, chromium, titanium, zirconium and mixtures thereof, supported on a silica-containing inorganic refractory metal oxide support support wherein the silica content thereof is less than 50 wt. % of the total support, said catalyst being steamed prior to use at a temperature at least 600.degree. C. In a preferred embodiment, the support will comprise a mixture of silica and the .gamma.-alumina wherein the silica content is less than 25 wt. % thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.