SURFACE SOLID-STATE INTERACTIONS IN COPPER-NICKEL-CEMENT CATALYSTS FOR HYDROGENATION OF OXYGEN

被引:0
|
作者
DULOV, AA [1 ]
ABRAMOVA, LA [1 ]
STASENKO, EM [1 ]
EFREMOV, VN [1 ]
TESAKOVA, GM [1 ]
GOLOSMAN, EZ [1 ]
YAKERSON, VI [1 ]
机构
[1] INST NITROGEN IND,NOVOMOSKOVSK 301670,RUSSIA
关键词
COPPER-NICKEL-CEMENT CATALYSTS; SURFACE PHASE ANALYSIS; ELECTRIC CONDUCTIVITY; SOLID-STATE INTERACTIONS;
D O I
10.1007/BF00697129
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The surface phase composition of alumocalcium cement-supported CuO and CuO-NiO catalysts prepared by chemical mixing has been studied using the method of thermo-vacuum curves of electric conductivity. The deactivation of these catalysts due to overheating to 800 degrees C under conditions of hydrogenation of oxygen is rationalized by the partial extraction of CuO (and NiO) from the stabilizing structure of the support solid solutions and by sintering of the extracted oxides and the reduced metallic phase. Complete regeneration of the CuO-NiO-talum catalysts can be achieved if a considerable amount (20%) of copper hydroxocarbonate is added.
引用
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页码:1471 / 1474
页数:4
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