Dehydration and reduction of synthetic garnierite |
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| Authors: | J J F Scholten A M Kiel |
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| Affiliation: | (1) Department of Chemical Technology, Delft University of Technology, Julianalaan 136, 2208 Delft, The Netherlands;(2) Central Laboratory, DSM, Geleen, The Netherlands |
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| Abstract: | The morphology of synthetic garnierite, Ni3(OH)4. Si2O5, has been studied by electron microscopy. The layer structure of the hollow garnierite needles has been made visible and the observed layer distance is in accordance with the X-ray result. Synthetic garnierite, totally dehydrated above 500° C, appears to be pseudomorphous with garnierite. Total reduction of the dehydrated product in hydrogen yields porous nickel-on-silica in which the small nickel crystallites are only partly accessible to hydrogen chemisorption. |
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