四种负载型Pt/Al_2O_3重整催化剂性能和表征的研究

Catalytic Properties and Characterization of Four Supported Pt/Al 2O 3 Reforming Catalysts

以四种不同来源的Ａｌ２Ｏ３为载体，采用相同浓度的Ｈ２ＰｔＣｌ６·６Ｈ２Ｏ水溶液浸渍方法制取了四种Ｐｔ／Ａｌ２Ｏ３催化剂．同时使用程序升温还原技术，程序升温脱附技术以及微型脉冲催化色谱技术对其催化剂性能进行表征．实验结果表明，四种催化剂的ＴＰＲ谱。

A Series of Pt Al 2O 3 catalysts were prepared using the incipient wetness technique.Four Al 2O 3 supports from different sources impregnated with an aqueous solution of the same amount of H 2PtCl 6·6H 2O.The catalysts were characteriaed by TPR,H 2-TPD and micro pulse catalytic chromatographic technique.The experimental results shows that TPR profiles,H 2-TPD spectra,dehydrocyclization activity and selectivity of n hexane are different in four catalysts using differents supports.