METHOD FOR PRODUCING 1-HEXENE FROM ETHYLENE BY TRIMERISATION Russian patent published in 2016 - IPC C07C11/107 C07C2/22 B01J31/02 B01J31/22 B01J31/18 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing 1-hexene from ethylene trimerisation method, involving use of the catalyst system consisting of chromium complex of general formula [CrCl₃(H₂O)((Ph₂P(1.2-C₆H₄)P(Ph)(1.2-C₆H₄)CH=CR₂)], where R is hydrogen or metal group, an activator is represented by methylaluminoxane and co-activator, is used as trimethylaluminium. System components are in the following molar ratio: chromium complex: MAO: TMA = 0.1% : 21.4% : 78.5%, in the solution methylcyclohexane at temperature 70-90°C, pressure of 30-40 bar. Invention provides selectivity of the process for trimerisation of ethylene 89-95% of fraction C₆, made on 99.3-99.5 % of 1-hexene with high efficiency of process from 900 up to 1400 kg of the product/g_Cr·h and minimal formation of polymer - 0.3 wt% of all products.

EFFECT: selectivity process for trimerisation of ethylene 89-95% of fraction C_6.

1 cl, 1 tbl, 13 ex