METHOD OF OBTAINING NICKEL-COPPER OXIDE CATALYST
FIELD: chemistry. ^ SUBSTANCE: nickel-copper oxide catalysts on metal carrier can be used in conversion of CO into CO2 in high-temperature processes of technological and exhaust gas purification, in particular, in energy and automobile industry. Catalysts on carrier, made from aluminium or its alloy...
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Zusammenfassung: | FIELD: chemistry. ^ SUBSTANCE: nickel-copper oxide catalysts on metal carrier can be used in conversion of CO into CO2 in high-temperature processes of technological and exhaust gas purification, in particular, in energy and automobile industry. Catalysts on carrier, made from aluminium or its alloy are obtained by plasma-electrochemical method by means of carrier processing in alkali electrolyte, containing nickel acetate and copper acetate and additionally including trisodium phosphate, sodium tetraborate and tungstate with following ratio of components, g/l: nickel acetate Ni(CH3COO)2.4H2O-5-20; copper acetate Cu(CH3COO)2.H2O-1.3-5.0; trisodium phosphate Na3PO4.12H2O-20-30; sodium tetraborate Na2B4O7.10H2O-10-20; sodium tungstate Na2WO4.2H2O-1-3. Plasma-electrochemical processing is carried out in galvano-static mode by pulse current, alternating or alternating unidirectional, with impulse duration 0.0033-0.04 sec, voltage 240-400 V, efficient current density 5-20 A/dm2 and electricity amount consumption 1500-6000 C/dm2 of formed catalytically active layer. Obtained catalyst is stable in temperature range 300-500° and ensures degree of CO into CO2 conversion in wide limits (from 37 to 97%). ^ EFFECT: increased catalyst stability. ^ 2 dwg, 1 tbl, 12 ex |
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