| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject compound in high yield by subjecting butenes to the mutual reaction over a metathesis catalyst including a metal compound in the transition group in the element periodic table. SOLUTION: In the presence of a metathesis catalyst containing at least one of metal compounds in the transition groups VIb, VIIb, or VIII in the periodic table, 1-butene is allowed to react with butene-2, subsequently formed propene and 2-pentene are separated. Then, the 2-pentene is allowed to react with ethene in the presence of the metathesis catalyst, subsequently formed propene and 1-butene are separated. At least part of the 1-butene product is exhausted and/or at least part of the isolated 1-butene is isomerized over an isomerization catalyst to form 2-butene. Then, the remaining 1-butene, the formed 2-butene and a part of the unreacting C4 fraction are recycled thereby obtaining propene or a combination thereof with 1-butene. |
