| 摘要 |
PROBLEM TO BE SOLVED: To produce 1-hexene without lowering the selectivity of the product or causing the entrainment of a deactivation agent to unreacted ethylene by trimerizing ethylene in the presence of a chromium-based catalyst and completely deactivating the catalyst with a deactivation agent in two stages. SOLUTION: Ethylene is trimerized in the presence of a chromium-based catalyst composed of a chromium compound and an alkyl metal compound. After completing the trimerization reaction, a deactivation agent is added to the liquid reaction product in an amount of >=1 mol-equivalent based on the chromium compound in the chromium-based catalyst and <3 mol-equivalent based on the total molar number of metals in the chromium-based catalyst to effect the deactivation of the chromium compound in the chromium-based catalyst. Thereafter, 3-2,000 mol-equivalent of a deactivation agent is added to the liquid reaction product to effect the complete deactivation of the chromium-based catalyst and obtain the objective 1-hexene useful as a comonomer for a linear low-density polyethylene or a raw material for plasticizers. |
