Olefin oligomerization process
The present invention provides an olefin oligomerization process comprising the steps of: i) reducing the level of acetonitrile in an olefin feed by contacting the feed with a non-zeolitic metal oxide; and ii) contacting the olefin feed with reduced level of acetonitrile with an olefin oligomerization catalyst under conditions suitable to oligomerize the olefin.
1. An olefin oligomerization process comprising the steps of:
i) reducing a level of acetonitrile and dimethyldisulfide in an olefin feed by contacting the feed with a non-zeolitic material consisting of a gamma alumina oxide and an iron oxide; and
ii) contacting the olefin feed having a reduced level of acetonitrile and dimethyldisulfide with an olefin oligomerization catalyst under conditions suitable to oligomerize the olefins.
2. The process according to claim 1 , wherein the olefin oligomerization catalyst used in step (ii) is selected from the group consisting of a zeolite, nickel oxide, phosphoric acid, and mixtures thereof.
3. The process according to claim 1 , wherein the non-zeolitic material used in step (i) and the olefin oligomerization catalyst used in step (ii) are in separate vessels.
4. The process according to claim 1 , wherein the temperature employed during step i) is in the range of 150 to 250° C.
5. The process according to claim 1 , wherein the olefin is selected from olefins having 3 to 6 carbon atoms.
6. The process according to claim 1 , wherein the gamma alumina oxide and the iron oxide are a physical mixture.