Modification of the catalytic activity of Ni/SiO2 in ethane hydrogenolysis, benzene and co hydrogenation by reduction at high temperatures and restoration by O2?H2 treatments |
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| Authors: | G A Martin and J A Dalmon |
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| Institution: | (1) Institut de Recherches sur la Catalyse, 2, avenue Albert Einstein, 69626 Villeurbanne Cédex, France |
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| Abstract: | An increase of the temperature of reduction of Ni/SiO2 from 900 to 1120 K results in a decrease of catalytic activity per unit area in benzene hydrogenation and ethane hydrogenolysis. O2–H2 treatments restore the activities. This behavior is similar to that observed on Pt-based catalysts. In contrast, the CO+H2 reaction on nickel is not affected by such treatments.
                 Ni/SiO2 900  1120             .  O2–H2 .  ,  , CO+H2 .
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