结构优化分子筛的制备及其催化裂化性能：Ⅰ．结构优化分子筛的制备及其表征  

PREPARATION AND CATALYTIC CRACKING PERFORMANCE OF STRUCTURAL OPTIMIZED ZEOLITES ：Ⅰ. Preparation and Characterization of Structural Optimized Zeolites

作　　者：周灵萍[1] 李峥[1] 张蔚琳[1] 杜军[1] 朱玉霞[1] 田辉平[1] 达志坚[1] 龙军[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2006年第B10期121-124,共4页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：采用气相超稳方法制备了一系列不同晶胞大小、不同稀土含量的稀土高硅分子筛HRY，再以稀土离子优化改性方法对其改性；采用XRD、XRF、DTA和IR等方法对改性前后的HRY进行表征。结果表明，与改性前HRY分子筛相比，结构优化改性后的稀土高硅分子筛RHRY具有更高的热稳定性、水热稳定性及酸性中心的稳定性。A series of ultra-stable Y zeolite samples （HRY） with different unit cell sizes and rare-earth contents were prepared by vapor phase method. Their structures were further modified and optimized by exchanging with RE^3＋ again. The conventional HRY and the modified HRY （RHRY） were characterized by XRD, XRF, DTA and IR. The results showed that, in comparison with the conventional HRY, RHRY exhibited both of higher thermalstability and hydrothermal stability.

关 键 词：催化裂化 裂化催化剂 气相法 分子筛 

分 类 号：O643[理学—物理化学]