Reforming with multimetallic catalysts
US4151115A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/0573
- 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 startup of a reactor. The catalyst is constituted of a composite which includes a Group VIII noble metal hydrogenation-dehydrogenation component, notably platinum, iridium, and selenium. Hydrogenolysis is supressed by incorporating within such reforming catalyst at the time of its preparation an element, or a compound or salt of selenium. 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, and selenium, have been added to promote the activity and selectivity of the catalysts, and said catalyst is prepared by a method wherein selenium is introduced into and deposited throughout said support. Suitably, the reforming catalyst, or composite also contains a halogen component, particularly chlorine and preferably the selenium compo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.