摘要
以两种不同孔径的多孔聚氨酯泡沫为基体,用预处理-化学镀-电镀-焚烧-还原热处理方法制备两种Ni质催化剂多孔载体。预处理和化学镀中影响样品增重速度的主要因素为镀液中次亚磷酸钠浓度。在电镀和热处理中,影响产品力学性能的主要因素为电镀液中硫酸镍浓度。样品表面Ni沉积不均匀,存在着许多微米级的颗粒,颗粒间的缝隙达纳米级,有利于其他细小颗粒附着,可以作为催化剂的良载体。
The nickel nature porous carriers of catalyst are prepared using two kinds of porous polyaminoresin foam by “pretreatment-chemical plating-electroplating-roasting-reductive heat treatment” The concentration of NaH2PO2·H2O is the key factor with effect on the weight-increased rate of product in the pretreatment and chemical plating processes. The concentration of NiSO4·6H2O in electrolyte plays an important role on the physical performance of product in electroplating and reductive heat treatment processes. Nickel on the product surface is asymmetric. There are a lot of micron grains and the gaps among the grains are in nanometer scale. It is beneficial to be adhered by the other small grains. The product is excellent catalyst carrier.
出处
《有色金属》
CSCD
北大核心
2005年第4期31-34,共4页
Nonferrous Metals
基金
辽宁省教育厅基金资助项目(20031008)
关键词
金属材料
NI
催化剂多孔载体
预处理
化学镀
电镀
还原热处理
metal material
nickel
porous catalyst carrier
pretreatment
chemical plating
electroplating
reductive heat treatment
