Stable, high-yield reforming catalyst
US5614454A · kind A · utility
11Cited by
14References
10Claims
0Family size
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Key dates
| Filing date | May 22, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | May 22, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve. The use of this bed of catalyst results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.