Chinese Journal of Catalysis

Chinese Journal of Catalysis ›› 2006, Vol. 27 ›› Issue (12): 1053-1058.

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Cocatalytic Effect of New Surface-Active Phosphine in Long-Chain Olefin Hydroformylation

FU Haiyan1, GUO Yu1, LIN Qi1,2, CHEN Hua1, LI Xianjun1*   

  1. 1 Institute of Homogeneous Catalysis, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China; 2 Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou 350011, Fujian, China
  • Received:2006-12-25 Online:2006-12-25 Published:2006-12-25

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Abstract: The co-catalysis properties of new surface-active phosphines DPPTS (sodium salt of sulfonated C12H25PhPPh2) and OPPTS (sodium salt of sulfonated C8H17PhPPh2) for long-chain olefin hydroformylation in an aqueous/organic biphasic system have been investigated. The catalytic systems containing the surface-active phosphine show a clear matching relation between the length of olefin chain and hydrophobic chain of the surface-active phosphine. The catalytic system containing DPPTS exhibit stronger acceleration effect on olefin hydroformylation than the system containing surfactant CTAB (cetyltrimethyl ammonium bromide) and TPPTS (P(m-C6H4SO3Na)3) when the molar ratio of phosphine/rhodium is low. Moreover, the leaching of rhodium into the organic phase is only 0.8% of the total rhodium added. DPPTS with the hydrophilic group and P atom at the same end of the carbon chain shows better co-catalysis effect than reported phopsine with the hydrophilic group and P atom at the two ends of the carbon chain.

Key words: rhodium, surface-active phosphine, co-catalyst, organic/aqueous biphasic system, high olefin, hydroformylation