气流粉碎对Y型分子筛结构与性能的影响  

Influence of Air Stream Pulverization on the Structure and Properties of Y Zeolites

作　　者：董为毅[1] 张文杰[1] 陶克毅[1] 李赫晅 

机构地区：[1]南开大学

出　　处：《工业催化》1995年第4期34-37,共4页Industrial Catalysis

摘　　要：用气流粉碎法将Ｙ型分子筛原粉粉碎成微粉，对粉碎前后的粉体颗粒作了对比分析，结果表明：经粉碎后粉体粒度分布狭窄，比表面变化不大。Ｘ－射线衍射峰的强度有明显增加，在间二甲苯异构化和甲苯歧化反应中的催化能力没有明显变化，而在正十六烷和异丙苯裂解反应中的催化活性则有所提高。Y zeolite is pulverized by air stream in order to obtain fine particles. The pulverized Y zeolite has narrower particle size distribution, slightly changed surface area and significantly increased strength ofXRD peaks. Its cut.catalytic activity in hexadecane and cumene cracking considerably increases but remains generally unchanged in m-xylene isomerization and toluene disproportion.

关 键 词：气流粉碎 Y型分子筛 催化活性 分子筛 

分 类 号：TQ424.25[化学工程]