Thermoregulated Phase-transfer Ligands and Catalysis( XVI ) - Kinetics Investigation of CO Selective Reduction of Aromatic Nitro Compounds Catalyzed by Rh/PETPP in Two-phasic System

Jian Ting Mei, Jing Yang Jiang*, Yan Hua Wang, Xiao Wei Wu, Zi Lin Jin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The nonionic water-soluble phosphine ligand P[C6H4-p-(OC2H4)6OH] 3 (PETP)/Rh complex termed the thermoregulated phase-transfer catalysis(TRPTC) was applied to CO selective reduction of nitroarenes compounds in the aqueous/organic two-phase. Using o-ClC6H4NO2 as a substrate, the influences of the reaction temperature, CO pressure, concentration of substrate, concentration of catalyst and volume ratio of aqueous to organic on the catalyst properties were studied. Under the conditions 423 K, pco = 4 MPa and t = 32 h, the conversions of o-ClC6H4NO2 were 98% and the selectivity for the corresponding amine was higher than 99%. The kinetics investigation suggested that first-order dependence was observed for the effect of the concentration of catalyst and o-ClC6H4NO2. The apparent activation energy was 131. 13 kJ/mol.

Original languageEnglish
Pages (from-to)918
Number of pages1
JournalKao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities
Volume23
Issue number5
Publication statusPublished - May 2002
Externally publishedYes

Keywords

  • CO selective reduction
  • Nitroarenes
  • Thermoregulated phase-transfer catalysis
  • Water-organic biphasic catalysis
  • Water-soluble phosphine rhodium complex

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