synthesis and characterization of chromium-based heterogeneous catalysts containing tridentate ligands for the production of 1-hexene

In this work, we report the synthesis and characterization of homogeneous and heterogeneous catalysts based on chromium containing tridentate ligands in ethylene trimerization. bis(2-decylsulfanylethyl)amine.crcl3 (cr-sns-d) and bis-(2-butylsulfanylethyl)amine (cr-sns-b) as homogeneous catalysts were synthesized and then immobilized on sba-15 and ti-sba-15 mesoporous silica to synthesis the corresponding heterogeneous catalysts. then their catalytic activity in the ethylene trimerization process was evaluated. cr-sns-d and cr-sns-b catalysts presented the activity of 60772 and 53344 g1-c6/gcr.h, respectively, and selectivity of 99.99%. also, the cr-sns-d@ti-sba-15 heterogeneous catalyst showed higher activity than cr-sns-d@sba-15 catalyst under the same reaction condition.