KINETICS OF THE POISONING BY THIOPHENE OF SUPPORTED NICKEL-CATALYSTS

被引:10
作者
AGUINAGA, A [1 ]
MONTES, M [1 ]
DELACAL, JC [1 ]
ASUA, JM [1 ]
机构
[1] FAC CIENCIAS QUIM,DEPT QUIM APLICADA,INGN QUIM GRP,APDO 1072,E-20080 SAN SEBASTIAN,SPAIN
关键词
D O I
10.1021/ie00001a022
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The kinetics of deactivation of a series of nickel catalysts by thiophene during benzene hydrogenation has been studied. The amount of sulfur retained by the catalyst for different amounts of thiophene fed into the reactor was measured, and the effect of the retained sulfur on both catalyst activity and metallic surface area was investigated. On the basis of these results, a kinetic model for the process was developed and its parameters were estimated. The model includes a relationship between the deactivation rate constant and both the physicochemical characteristics of the catalyst and the total amount of catalyst in the reactor. A good agreement between experimental results and model prediction was achieved.
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页码:155 / 163
页数:9
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