Dehydrogenation catalyst and process
US4880764A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Dec 23, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/523
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A novel catalytic composite and a process of its use is disclosed. The catalyst comprises a platinum group metal component, a first modifier component selected from Group IA and IIA elements of the Periodic Table, a second modifier components selected from the group of elements consisting of palladium, iridum, and osmium, and a third modifier component selected from the elements of Group IVA of the Peridoic Table of the Elements. All of the catalytic components are located on a refractory oxide support having a nominal diameter (d) of from 50 to 1000 microns. The catalytic composite is characterized in that the second modifier component is surface-impregnated upon the support in such a manner that the average concentration of the surface-impregnated second modifier component on the outside 0.2d micron catalyst layer is at least 2 times the average concentration of the second modifier component in 0.4d micron diameter center core of the catalyst where d is the nominal diameter, and wherein the first modifier metal component is uniformly impregnated. The catalytic composite has been found to be most useful in the dehydrogenation of dehydrogenatable hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.