Olefin upgrading by selective conversion with synthetic mesoporous crystalline material
US5191144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Oct 7, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In the process of olefin disproportionation, a feedstock containing predominatly mono-olefin the feedstock is charged at elevated temperature into a catalytic conversion zone in contact with mesoporous acid olefin conversion catalyst under selective olefin interconversion conditions. The improvement is characterized by a mesoporous acid metallosilicate crystalline catalyst material having Bronsted acid sites in a hexagonal lattice structure, said catalyst material having substantially uniform pores in hexagonal arrangement with a pore size of about 20 to 100 Angstroms units. In the preferred embodiments the olefinic feedstock is reacted for less than 10 seconds in contact with MCM-41 mesoporous metallosilicate catalyst under partial reaction conditions sufficient to provide increased yield of C4 alkene having a ratio of isobutene to normal butenes greater than equilibrium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.