N-olefin skeletal isomerization process

Details N-olefin skeletal isomerization process N-olefin skeletal isomerization process

C - Chemistry, Metallurgy

07

C

C07C 11/02 (2006.01) B01J 29/65 (2006.01) B01J 29/70 (2006.01) C07C 5/27 (2006.01)

Patent

CA 2117525

In a process for skeletal isomerization of linear olefins to iso-olefins, e.g., n-butenes to over a catalyst comprising medium pore zeolite, e.g., a zeolite selected from ZSM-22, ZSM-23, and ZSM-35, the zeolite is pretreated with a dicarboxylic acid, e.g., oxalic acid. The pretreatment significantly reduces aging rate and increases cycle length of the catalyst.

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