Metal on rare earth modified silica alumina as hydrocarbon conversion catalyst
US5248409A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Aug 20, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C5/2791
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Rare earth oxides, such as Nd.sub.2 O.sub.3 disperse onto the surface of SiO.sub.2 /Al.sub.2 O.sub.3 and act as weakly basic titrants. This lowers the acidity of SiO.sub.2 /Al.sub.2 O.sub.3 to close to that of chlorided alumina, as shown by model compound reaction tests. This support also disperses a noble metal such as Pt much better than undoped SiO.sub.2 /Al.sub.2 O.sub.3 and similar to chlorided alumina. Platinum on the rare earth modified silica alumina can function as a hydrocarbon conversion catalyst in reactions where Pt/chlorided Al.sub.2 O.sub.3 is used, such as in reforming, and isomerization, especially wax isomerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.