Hydrocarbon isomerization catalyst, process for its preparation, and use thereof
US4830998A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Jul 16, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C5/2791
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalysts for the isomerization of hydrocarbons, particularly normal paraffins having from 4 to 7 carbon atoms, as well as a process for the preparation of the catalyst and a process for their use in the isomerization of such hydrocarbons are disclosed. The catalysts are composed of a zeolite support impregnated with a mixture of zirconium, a refractory metallic oxide and at least one platinum-group metal. The process for the preparation of the catalysts involves steps of depositing the zirconium, on the zeolite support, mixing (zeolite+Zr) with alumina, and depositing a platinum group metal on the mixture (zeolite+Zr)/alumina, accompanied by intermediate calcining and shaping steps, and followed by drying and final calcining steps. Alternative methods for depositing the zirconium and platinum group metals on the zeolite are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.