Olefin conversions and catalysts
AssigneePhillips Petroleum Company
InventorRobert E. Reusser
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Abstract
The disproportionation/skeletal isomerization of olefins can be carried out with high conversions and selectivity in the presence of catalyst compositions containing Group IIA and at least one of Group VIB and rhenium components.
Claims19
A process for the conversion of alpha-olefins to skeletal isomerization and/or disproportionation products comprising the step of contacting an alpha-olefinic feed with a catalyst composition comprising a Group IIA component deposited onto the surface of a support containing at least one of a Group VI metal and rhenium component.
A process for the production of 2,3-dimethylbutenes via suitable olefinic conversion comprising the step of contacting an olefin containing at least one neoalkyl group adjacent to an olefinic carbon under conditions to produce 2,3-dimethylbutenes with a catalyst containing MgO deposited by precipitation or impregnation onto the surface of WO.sub.3 /SiO.sub.2.
A process for producing disproportionation products from primary reactants and co-reactants comprising the steps of:
- (1) contacting the reactants with a dimerization catalyst,
- (2) contacting the total reaction product of step (1) with a disproportionation catalyst,
- (3) contacting the total disproportionation product of step (2) with an isomerization catalyst under skeletal isomerization conditions, and
- (4) isolating the desired product.
A process for the production of dimethylbutenes from diisobutylene which comprises
- (a) contacting diisobutylene and ethylene under disproportionation conditions in the presence of disproportionation catalyst to form a product mixture comprising 3,3-dimethylbutene-1(neohexene), 2,3-dimethylbutene-2, and 2,3-dimethylbutene-1 and
- (b) subjecting the product mixture of (a) without isolation of neohexene intermediate to skeletal isomerization conditions in the presence of an isomerization catalyst to convert neohexene to 2,3-dimethylbutene-2 and 2,3-dimethylbutene-1.
A process for the isomerization of olefins which comprises contacting olefinic hydrocarbons under isomerization conditions with a catalyst comprising WO.sub.3 /SiO.sub.2 which is modified by depositing MgO on the surface thereof.
Dependencies are inferred from the claim text.