期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 282, 期 1-2, 页码 80-84出版社
ELSEVIER
DOI: 10.1016/j.molcata.2007.11.027
关键词
hydrogenation; o-chloronitrobenzene; supercritical carbon dioxide; Pd/C
Hydrogenation of o-chloronitrobenzene (o-CNB) to o-chloroaniline (o-CAN) with Pd/C has been investigated in supercritical carbon dioxide (scCO(2)) at 308 K. The influences of several parameters such as CO2, H-2 pressures, Fd metal particle size and reaction time have been discussed. CO2 pressure presented markedly effects on the reaction rate and product selectivity under the reaction conditions used, the selectivity to o-CAN at CO2 pressure from 8 to 13 MPa (supercritical region) was larger than that at CO2 pressure below 6 MPa (subcritical region). Moreover, the larger selectivity to o-CAN was obtained in scCO(2) compared with that in ethanol. (C) 2007 Elsevier B.V. All rights reserved.
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