Effect of zeolite support on catalytic activity of Nio clusters |
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Authors: | J Pospí?il and E Drahorádová |
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Institution: | (1) J. Heyrovsky Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, 182 23 Prague, Czechoslovakia;(2) Present address: 1st Dept. of Medicine, Charles University, U. Nemocnice 2, 128 08 Prague 2, Czechoslovakia |
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Abstract: | Zeolite Y, partially dealuminated under hydrothermal conditions, is used as a support for nickel clusters. The effect of the zeolite structure and of the means of applying the Ni2+ cations on the reactivity of dispersed nickel in CO methanation has been studied. The highest conversion was obtained on samples with developed secondary porosity, impregnated with the nickel ammine complex, Ni(H2O)2 (NH3)4]Cl2. The data obtained are discussed from the point of view of the effect of secondary porosity and the means of introducing the parent Ni2+ ions on the localization and thermal stability of Nio clusters.
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![ucy](/content/k443q542070320u0/xxlarge1091.gif) ![scy](/content/k443q542070320u0/xxlarge1089.gif) ![tcy](/content/k443q542070320u0/xxlarge1090.gif) ![acy](/content/k443q542070320u0/xxlarge1072.gif) ![bcy](/content/k443q542070320u0/xxlarge1073.gif) ![icy](/content/k443q542070320u0/xxlarge1080.gif) ![lcy](/content/k443q542070320u0/xxlarge1083.gif) ![softcy](/content/k443q542070320u0/xxlarge1100.gif) ![ncy](/content/k443q542070320u0/xxlarge1085.gif) ![ocy](/content/k443q542070320u0/xxlarge1086.gif) ![scy](/content/k443q542070320u0/xxlarge1089.gif) ![tcy](/content/k443q542070320u0/xxlarge1090.gif) ![kcy](/content/k443q542070320u0/xxlarge1082.gif) ![lcy](/content/k443q542070320u0/xxlarge1083.gif) ![acy](/content/k443q542070320u0/xxlarge1072.gif) ![scy](/content/k443q542070320u0/xxlarge1089.gif) ![tcy](/content/k443q542070320u0/xxlarge1090.gif) ![iecy](/content/k443q542070320u0/xxlarge1077.gif) ![rcy](/content/k443q542070320u0/xxlarge1088.gif) ![ocy](/content/k443q542070320u0/xxlarge1086.gif) .
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