Concomitant use of liquid–liquid batch and continuous plug flow reactors for kinetic model discrimination. Application to the Rh/TPPTS catalysed reduction of the C–C double bond in dimethylitaconate |
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Authors: | Claude de Bellefon Nathalie Tanchoux Sylvain Caravieilhes and Daniel Schweich |
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Affiliation: | Laboratoire de Génie des Procédés Catalytiques, CNRS – CPE Lyon, BP 2077 F-69616 Villeurbanne France |
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Abstract: | The biphasic catalytic reduction of the C–C double bond of dimethylitaconate with a water soluble rhodium/triphenylphosphinetrisulphonated sodium salt (TPPTS) complex is investigated. Kinetic studies in a well-mixed batch reactor provide kinetics parameters and an activation energy of 71 kJ mol−1 but cannot discriminate between a first order or a complex kinetic model within the range of substrate concentration where the approximation of linear liquid/liquid partition is respected. Catalytic tests in the centrifugal partition chromatograph (CPC) reactor under steady-state operations in chemical regime and plug flow mode allow discriminating the kinetic models, the complex kinetic rate law being preferred. |
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Keywords: | Homogeneous catalysis Liquid-liquid catalysis Rhodium Kinetics Plug flow reactor Batch reactor Model discrimination |
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