摘要
用磁化学方法研究了浸渍在硅胶上的镍的分散度。对镍含量为0.05wt%至20wt%的一系列样品的磁性进行了测量。按磁化曲线的起始部分估算了含镍等于及小于1wt%镍的粒子大小。根据经验公式,计算了样品的饱和磁化强度。用Michel—Selwood方法得到了每个样品的粒子大小分布曲线。对部分催化剂的烧结现象和磁性进行了研究。
The dispersion of nickel adsorbed on silica gel was investigated by the magnetochemical method and the magnetic properties of the specimens contai ning nickel from 0.5 to 20.0wt% were measured. On the original part of magnetization curve, the size of the particle containing nickel 1.0 or below 1.0wt% was estimated. The intensities of the saturated magnetization of the specimens were calculated. The curve of the distribution of particle sizes w obtained for each specimen by Michel-Selwood's method. In addition, the si tering and magnetic properties of some nickel catalysts were studied.
关键词
镍催化剂
硅胶载述
磁性
nickel catalyst
silica gel carrier
magnetic properties
magnetochemical method
