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Citation: Ruan Wen-Juan, Zhu Zhi-Ang, Huang Xiao-Qun, Chen Rong-Ti, Jiang Dong-Qing. Kinetic Study on Porphinatoiron(III) Catalyzing Decomposition of β-Carotene[J]. Acta Physico-Chimica Sinica, ;1994, 10(04): 312-318. doi: 10.3866/PKU.WHXB19940406 shu

Kinetic Study on Porphinatoiron(III) Catalyzing Decomposition of β-Carotene

1.
Department of Chemistry, Nankai University, Tianjin 300071; Central Laboratory, Nankai University, Tianjin 300071

Received Date: 3 August 1992
Available Online: 15 April 1994

A spectrophotometric study of the kinetics of β-carotene oxidative decom-position to vitamin A is reported in this paper. Meso-tetramesityl-porphinatoiron (Ⅲ) chloride (FeTMPCl) was used as catalyst and m-chloroper-benzoic acid (mCPBA) as oxidant in dichloromethane. The reaction mechanism was postulated. The experimental data were simu lated with IBM-PC computer. The kinetic parameters of the elementary steps were obtained. The activation enthalpy △~≠H_m and activation entropy △~≠S_m and standard molar enthalpy change ΔH_m and standard molar entropy change ΔS_m of the elementary steps were calculted. The effect of various ligands on the rate of reaction was also examined.
- meso-tetramesitylporphinatoiron(III) chloride,
- Oxidative decomposition,
- Reaction mechanism,
- β-Carotene
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