GAS-LIQUID-LIQUID REACTION USING WATER-SOLUBLE CATALYST

被引：33

作者：

HABLOT, I ^{[1
]}

JENCK, J ^{[1
]}

CASAMATTA, G ^{[1
]}

DELMAS, H ^{[1
]}

机构：

[1] RHONE POULENC,CTR IND DECINES,F-69151 DECINES CHARPIEU,FRANCE

来源：

CHEMICAL ENGINEERING SCIENCE | 1992年 / 47卷 / 9-11期

关键词：

D O I：

10.1016/0009-2509(92)87114-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Industrial applications of homogeneous catalysis by precious metal complexes are limited due to the difficult recovery or regeneration of such catalysts. By using water soluble phosphorous ligands, the catalytic complex can be kept in aqueous phase. The major drawback, a drastic reduction of the effective reaction rate, has been overcome by adding a cosolvent. Water-octene-cosolvent equilibrium has been estimated (UNIFAC) in order to select a convenient cosolvent, i.e. increasing significantly the octene concentration in the aqueous phase without losing catalyst in the organic phase. Similar thermodynamic prediction of liquid-gas equilibria has then been performed, showing only moderate effects of the cosolvent. Due to ligands oxidation by water, catalyst stability must be improved by increasing the concentration of phosphorous ligands. Then initial kinetics, derived without any mass transfer limitations, showed first order reaction rates with respect to hydrogen and octene-1 in the aqueous phase. Complete kinetics of parallel hydrogenation and isomerisation have been analysed, using step by step liquid-liquid and liquid-gas equilibria accounting for octene consumption.

引用

页码：2689 / 2694

页数：6

共 10 条

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