CATALYTIC CONVERSION OF ETHYLENE ON SYSTEMS BASED ON THRICHLOROTRIS-(TETRAHYDROFURANATE)CHROMIUM(III) WITH SOS-TYPE LIGANDS IN COMBINATION WITH VARIOUS ORGANOALUMINUM COCATALYSTS

This work presents the results of studying behavior catalytic systems formed on basis trichlorotris-(tetrahydrofuranate)chromium(III) in presence sulfur-containing tridentate SOS-type ligands and activated by various organoaluminum compounds. In formation systems, following compounds were used: - bis-(2-methylthioethyl) ether, bis-(2-ethylthioethyl) ether bis-(2-phenylthioethyl) triethylaluminum, triisobutylaluminum, tributylaluminum methylaluminoxane. course test experiments aimed at choosing an activator a temperature 40 °C ethylene pressure 2 MPa, best obtained for triethylaluminum. Therefore, further conversion carried out only with this activator. To study effect reaction zone, trichlorotris-(tetrahydrofuranate)chromium(III)/ligand/triethylaluminum composition studied range from to 80 3 MPa molar ratio components Cr : L AlEt3 = 1 20. As result studies, it was shown that all cases when using SOS type, us showed tendency not polymerization, but also oligomerization ethylene. The field into hexenes system / ether/triethylaluminum, which content hexene fraction is 54 55 wt.%, while selectivity hexene-1 reaches 88 89%.