摘要
利用程序升温还原（ＴＰＲ）、Ｘ射线衍射仪和固定床微反装置等对不同温度下焙烧的Ｎｉ／γＡｌ２Ｏ３催化剂的性能进行了实验研究。结果表明，焙烧温度对催化剂活性组分镍晶粒的粒度、镍的还原性能以及催化剂的活性和稳定性有很大影响。当焙烧温度的范围为７００—９００℃时，催化剂具有良好的活性和水热稳定性。在６００℃下焙烧的催化剂极易被还原，催化剂初活性较好，但水热稳定性很差。在１０００℃下焙烧的催化剂很难被还原，催化剂初活性最好，但水热稳定性不太好。
The effect of calcination temperature on performances of Ni /γ-Al2O3 catalyst were investigated experimentally by using temprature profile recorder ,X-ray diffraction and fixed-bed reactor The calcination temperature has great influence on the size of Ni crystallite the catalytic activity ,stability and hydrothermostability of Ni /γ Al2O3catalyst The activity and hydrothermostability of Ni/γ-Al2O3catalyst being calcined at 700~900 are good When the calcinating temperature is 600 or 1000,the initial activity of the catalyst is high but the hydrothermostability is low
出处
《石油大学学报（自然科学版）》
CSCD
1999年第6期67-69,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
中国石油化工集团公司资助!297028
关键词
催化剂
焙烧温度
水热稳定性
活性
镍
氧化铝
catalyst calcination temperature Ni /γ-Al2O3 hydrothermostability activity
