Effect of reaction conditions on hydroformylation of mixed octenes (2,4,4-trimethyl-1 -pentene and 2,4,4-trimethyl-2-pentene) in homogeneous catalytic system

Key words:  mixed octenes(2,4,4-trimethyl-1 -pentene and 2,4,4-trimethyl-2-pentene)  homogeneous catalytic system  hydroformylation  inorganic salt  react condition

Abstract:

The influences of inorganic salt additives, the molar concentration ratio of TPPTS to Rh, temperature, pressure and time on hydroformylation of mixed octenes in homc^eneous catalytic system were studied. The mass fraction of 2,4,4-trimethyl- i- pentene and 2,4,4-trimethyi-2-pentene is 69%，19% respectively. The experimental results show that the optimum reaction conditions were the temperature zone of 130 ?140 "C，the molar concentration ratio of TPPTS to Rh is 30， the pressure is as high as possible and the react time must be determined based on the production data. The number of recycle of rhodium catalyst in homogeneous catalytic system with inorganic salt can be increased.