摘要
介绍了一种含稀土的化学超稳分子筛 ,其稀土质量分数可调范围 (0 .1 %～ 1 7.0 % )较宽 ,采用XRD和IR表征 ,结果表明 ,稀土以离子和氧化物独立相 2种形态存在于分子筛孔内及表面 ,该分子筛具有优良的抗钒性能 ,同时用该分子筛制备的催化剂具有很好的裂化反应选择性。
A novel chemical ultra-stable Y zeolite was introduced,which had 0.1%～17.0% of RE 2O 3 and was characterized by the methods of XRD and IR.The characterization results showed that RE on the zeolite were two types:one was RE 2O 3 and the other was RE 3+ ion.The results showed that the novel zeolite had excellent vanadium resistance and good products selectivity,especially,for gasoline,dry gas and coke.
出处
《石化技术与应用》
CAS
2002年第4期227-229,共3页
Petrochemical Technology & Application
