The microkinetics of ammonia synthesis catalyzed by cesium-promoted supported ruthenium

被引:100
作者
Hinrichsen, O [1 ]
Rosowski, F [1 ]
Muhler, M [1 ]
Ertl, G [1 ]
机构
[1] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY
关键词
D O I
10.1016/0009-2509(96)00027-9
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Microkinetic models have been established successfully in case of ammonia synthesis over iron (Dumesic and Trevino, 1989) and methanol synthesis over copper (Rasmussen et al., 1994) based on a detailed knowledge about the kinetics of the involved elementary steps which allow to extrapolate the results from single crystal studies to predict the performance of an industrial catalyst operating at high pressure. In the present study, it has been possible to set up a consistent microkinetic model for ammonia synthesis based on a LHHW mechanism which describes the results of steady-state and transient experiments performed with a Cs-promoted ruthenium catalyst supported on MgO in agreement with kinetic data obtained under ultrahigh vacuum conditions.
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页码:1683 / 1690
页数:8
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