Layered catalyst composition and processes for preparing and using the composition
US6177381A · kind A · utility
43Cited by
36References
33Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 3, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Nov 3, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a layered catalyst composition, a process for preparing the composition and processes for using the composition. The catalyst composition comprises an inner core such as alpha-alumina, and an outer layer bonded to the inner core composed of an outer refractory inorganic oxide such as gamma-alumina. The outer layer has uniformly dispersed thereon a platinum group metal such as platinum and a promoter metal such as tin. The composition also contains a modifier metal such as lithium. The catalyst composition shows improved durability and selectivity for dehydrogenating hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.