| 摘要 |
Ethylene is oligomerized to even numbered alpha-monoolefins, predominantly in the range up to about C40, by contact at elevated pressure with nickel complex catalysts dissolved in polar organic solvents, preferably certain diols. In the recovery of oligomers from the reaction product of this process, the ethylene-containing liquid oligomer product phase, after separation from the liquid solvent phase, is scrubbed with a clean portion of the organic solvent to remove catalyst complex, which may be recycled to the reaction zone. Such catalyst removal prevents polyethylene formation during further processing of the product, thus avoiding fouling of process equipment and improving ethylene utilization as well as catalyst utilization.
|
