Process for activating catalyst precursors for the dehydrogenation of C2-C5 paraffins, and a catalytic composition activated by the process
US5308822A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 8, 1993 |
| Grant date | May 3, 1994 |
| Priority date | — |
| Expiry date | Mar 8, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The process for activating a catalytic composition for paraffin dehydrogenation containing gallium, alumina, possibly silica and/or one or more alkaline or alkaline-earth metals, comprises thermal activation in air followed by post-activation effected by the following stages: PA0 oxidation with air and/or oxygen or a mixture containing oxygen and inert gas; PA1 purging with inert gas; PA0 reduction with hydrogen or a mixture of hydrogen and an inert or reducing gas. The catalytic composition activated by said process contains gallium, alumina, silica and possibly one or more alkaline or alkaline-earth metals, the alumina being in .delta. or .theta. phase or in .delta.+.theta. or .delta.+.theta.+.alpha. phase mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.