吸附还原法制备凹土基核壳结构棒状镍粉

发布时间：2018-06-24 06:26

  本文选题：化学沉积 + 镍　； 参考：《非金属矿》2017年01期

【摘要】：以凹凸棒石棒晶作为内核,用液相沉积法包覆Ni制备核壳结构镍粉须先进行表面活化,目前多采用贵金属钯进行活化。本研究提出采用吸附-还原法活化,利用凹土优异的吸附性能,先在棒晶表面吸附Ni2+,再用还原剂将Ni2+还原成镍,构建初始活化锚点,然后再进化学沉积制备出核壳结构镍粉。分析了吸附-还原活化法凹土基镍核壳结构棒状镍粉的制备机理。该法无需贵金属钯,降低了成本,简化了工艺,有良好的应用前景。
[Abstract]:Using palygorskite bar crystal as the core, the surface activation of the shell structure nickel powder coated with Ni by liquid phase deposition is first activated. At present, more precious metal palladium is used for activation. This study proposed that the adsorption reduction method was used to activate the nickel powder by adsorption reduction method. The adsorption of Ni2+ on the surface of the rod crystal was first adsorbed on the surface of the rod crystal, and then the Ni2+ was reduced to nickel by the reductant. The nuclear shell structure nickel powder was prepared by the initial activation anchorage and then prepared by chemical deposition. The mechanism of preparation of nickel powder for nickel core and shell structure of nickel core and shell structure by adsorption reduction activation method was analyzed. The method did not need precious metal palladium, reduced the cost, simplified the process and had good application prospect.
【作者单位】： 淮阴工学院化工学院江苏省凹土资源利用重点实验室;南京工业大学机械与动力工程学院;
【基金】：江苏省科技支撑计划(BE2011126)
【分类号】：TD985
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本文编号：2060409