Reforming with multimetallic catalysts
US4148758A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Apr 10, 1979 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for desensitizing a hypersensitive, high activity reforming catalyst for suppression of hydrogenolysis which is particularly acute during the early portion of the period that the catalyst is placed on stream, i.e., at the start-up of a reactor. The catalyst is constituted of a composite which includes a Group VIII noble metal hydrogenation-dehydrogenation component, notably platinum, iridium or rhenium, and a sulfurous acid or sulfuric acid component. Hydrogenolysis is suppressed by incorporating within such reforming catalyst at the time of its preparation a sulfurous acid or sulfuric acid component. In another of its aspects the present invention embodies a reforming catalyst or catalyst composite comprising a refractory or inorganic oxide support material, particularly alumina, a Group VIII noble metal hydrogenation-dehydrogenation component, notably platinum, to which iridium or rhenium, and a sulfurous acid or sulfuric acid component have been added to promote the activity and selectivity of the catalysts, and said catalyst is prepared by a method wherein the sulfurous acid or sulfuric acid component is introduced into and deposited throughout said support. Suitably,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.