Preparation and characterization of ultr
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Xiaoli Xi; Zuoren Nie; Yabao Jiang; Xiangyang Xu; Tieyong Zuo
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Article
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2009
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Elsevier Science
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English
β 720 KB
Ultrafine cobalt powders have been prepared by the freeze-drying method and supported cobalt catalysts have been prepared by a new freeze-drying immersion method. The results of XRD and SEM showed that the precursors were amorphous and most were massive with a size range of 2-5 Β΅m. In the cobalt pow