摘要
以旋铸法制备快速凝固Ｎｉ５０Ａｌ５０合金条带，经球磨、活化处理后制成了骨架镍催化剂．利用金相检验，ＸＲＤ，ＢＥＴ等技术对催化剂的整体结构和表面状态进行分析，发现快凝催化剂与常规催化剂相比，具有较小的比表面积，相似的晶粒度和略大的点阵参数．对比研究了常规骨架镍催化剂和快凝骨架镍催化剂的油脂加氢性能，结果表明，在相同的化学反应条件下，快凝骨架镍的油脂加氢活性比常规催化剂的高出约０．５倍．
Rapidly solidified Ni50Al50 alloy ribbons are prepared, ground and activated into RaneyNi catalyst, then they are investigated and analyzed with X-ray diffraction (XRD), BET measurements,The results indicate that the rapidly solidified Ni50Al50 catalyst has smaller surface area, similar grain size and a little bigger lattice parameter, compared with conventionally prepared Ni50Al50 catalyst.The results of the oil hydrogenation show that the activity of rapidly solidified Ni50Al50 catalyst is about half times higher than that of the conventionally prepared Ni50Al50 catalyst under the same reaction conditions.
出处
《郑州工业大学学报》
1999年第2期57-60,共4页
Journal of Zhengzhou University of Technology
基金
化工部重点基础研究资助
关键词
快速凝固
骨架镍催化剂
镍铝合金
加氢
催化剂
rapid solidification
conventional solidification
RaneyNi catalyst
activity
grain size
