Pd-La/γ-Al_2O_3气相催化合成3,5-二甲基苯胺  

Synthesis of 3,5-dimethylaniline via gas-phase amination over Pd-La/γ-Al_2O_3 catalyst

作　　者：何邦方[1] 孙璐璐[1] 吕利敏[1] 王佳[1] 刘纯山[1] 

机构地区：[1]华东理工大学工业催化研究所,上海200237

出　　处：《工业催化》2008年第1期45-47,共3页Industrial Catalysis

摘　　要：以γ-A l2O3为载体,采用浸渍法制备了Pd-La/γ-A l2O3催化剂,并在固定床反应器中研究了该催化剂上的气相胺化合成3,5-二甲基苯胺。采用BET孔结构测试、XRD、TG和SEM等手段对新鲜及失活催化剂进行表征,考察了胺化反应前后催化剂性能的变化。结果表明,失活催化剂上的积炭分别沉积在金属和载体上。A Pd-La/γ-Al2O3 catalyst was prepared by impregnation method using γ-Al2O3 as the support. Synthesis of 3,5-dimethylaniline via gas-phase amination was investigated in a continuous fixed bed reactor over the catalyst. The fresh and deactivated catalyst samples were characterized by BET, XRD, TG- DTG and SEM. The results showed that coke formation occurred on both the metal and the support.

关 键 词：催化化学 Pd—La/γ—Al2O3催化剂 3 5-二甲基苯酚 气相胺化 3 5-二甲基苯胺 积炭失活 

分 类 号：O643.36[理学—物理化学]