γ-Al_2O_3对HZSM-5催化剂芳构化性能的影响

The Influence of γ- Al_2O_3 to HZSM-5 Aromatiza-tion Catalyst

γ-Al_2O_3是最常用的一种催化剂载体,也可单独作固体酸催化剂。实验表明,它能改变分子筛表面的酸性,另外,通过对γ-Al_2O_3/HZSM-5进行金属离子改性,能明显改变γ-Al_2O_3/HZSM-5芳构化催化剂的活性、稳定性等催化性能,对芳构化催化剂的研究有重要作用,进而对工业芳构化的进程有重要的影响。

; γ - A12O3 is a kind of catalyst carrier in common use, and it can be used as solid acid catalyst by itself. The experiment shows that it can change acidity of molecular sieve surface. Furthermore, it can change the activity and the stability of γ-Al2O3/HZSM-5 aromati zation catalyst through modifying γ - Al2O3/HZSM -5 by metal ion. It has an important effect on the research of ar-omatization catalyst, and a profound and lasting influence in the process of industrial aromatization.