Oligomerization of olefins

Details Oligomerization of olefins Oligomerization of olefins

C - Chemistry, Metallurgy

07

C

C07C 11/02 (2006.01) B01J 29/70 (2006.01) C07C 2/12 (2006.01) B01J 29/65 (2006.01)

Patent

CA 2141568

A process for producing substantially linear hydrocarbons by oligomerizing a lower olefin at elevated temperature and pressure comprises contacting the lower olefin under oligomerization conditions with constrained intermediate pore siliceous ac- idic zeolite, eg, ZSM-22, -23 or -35, having Brönsted acid activity. The zeolite is pretreated with a dicarboxylic acid, eg oxalic ac- id, under conditions to effect a reduction of at least 20 % in the surface acidity of the zeolite, as determined by tri-tertiarybutyl- benzene conversion, without substantial reduction in the overall activity of the zeolite as indicated by alpha value.

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