Olefin conversion to lubricant range hydrocarbons
AssigneeMobil Oil Corporation
InventorsWilliam E. Garwood, Guenter G. Kuehl, Rene B. LaPierre
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Abstract
An improved process for the production of a high viscosity index lubricant range oil in high yield by contacting light olefins under oligomerizing conditions with a zeolite type catalyst, such as ZSM-5, which has been extracted with a metal chelating agent to remove a portion of framework metal oxide.
Claims16
In the process of converting light olefins to lubricant range hydrocarbons comprising contacting such at high pressure and elevated temperature with a medium pore size shape selective metallosilicate zeolite catalyst having Bronsted acid activity, to produce a C.sub.20 + hydrocarbon fraction comprising a major portion of 343.degree. C.+ lubricant range hydrocarbons, the improvement comprising, contacting said light olefins with said metallosilicate zeolite catalyst, said catalyst having been extracted with a metal chelating agent, whereby 343+.degree. C. lubricant range hydrocarbons are produced having a viscosity index of at least 80 with yields of at least 40%.
An improved process for the conversion of light olefins to C.sub.20 + lubricant range hydrocarbons in high yield, comprising:
- providing an acidic medium pore size, shape selective aluminosilicate zeolite type catalyst having the structure of ZSM-5, said catalyst having been extracted with an aluminum chelating agent;
- contacting a light olefins feedstream with said catalyst in a fixed bed reactor under oligomerizing conditions to produce an effluent stream comprising a major portion of C.sub.20 + hydrocarbons;
- separating a 343.degree. C+ fraction of said effluent stream to provide lubricant range hydrocarbons with viscosity index of at least 80 and yield of at least 40%.
Dependencies are inferred from the claim text.