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 language | English |
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Pages (from-to) | 918 |
Number of pages | 1 |
Journal | Kao Teng Hsueh Hsiao Hua Heush Hsueh Pao/ Chemical Journal of Chinese Universities |
Volume | 23 |
Issue number | 5 |
Publication status | Published - May 2002 |
Externally published | Yes |
Keywords
- CO selective reduction
- Nitroarenes
- Thermoregulated phase-transfer catalysis
- Water-organic biphasic catalysis
- Water-soluble phosphine rhodium complex