Method for purifying 1-hexene

A method for purifying 1-hexene, the method comprising:

• contacting a first stream comprising 1-hexene and 2-ethyl-1-butene with an isomerization catalyst comprising activated alumina having a surface area of 200 m2/g to 550 m2/g under conditions sufficient to selectively isomerize at least a portion of 2-ethyl-1-butene into 3-methyl-2-pentene and form a second stream comprising 1-hexene and 3-methyl-2-pentene;
• and
• separating the second stream into a third stream comprising 1-hexene and a fourth stream comprising 3-methyl-2-pentene,
• wherein 2-ethyl-1-butene conversion for the isomerization reaction is greater than 70%, and 1-hexene conversion for isomerization reaction is less than 10%
• wherein the isomerization conditions comprise a temperature of 40° C. to 100° C.;
• a pressure of 1 bar to 10 bar, or liquid hourly space velocity of 0.5 hr−1 to 10 hr−1, or any combinations thereof;
• and
• wherein the second stream is separated by distillation at a temperature of 55° C. to 75° C., and/or pressure of 0 to 3 bar.