| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing octene, which does not use, as a raw material in octene synthesis, a C4 fraction which needs a purification step for removing a nitrogen-containing, oxygen-containing or sulfur-containing polar compound that is dimerization poison and catalyst poison.SOLUTION: The method includes: dimerizing ethylene by use of a titanium-based catalyst or a catalyst system composed of a nickel compound and an aluminum compound to form butene; and dimerizing the butene in the presence of a catalyst system including a nickel complex or a mixture of the nickel complex to form octene. The ethylene dimerizing step and the butene dimerizing step are performed without performing purification step in between, and n-butene obtained by the dimerizing is free from isobutene and butane. |
