吡啶、CO和SO_2在Al_2O_3/SiO_2混合氧化物复合纳米晶上的TPD  

TPD of Pyridine, CO and SO_2 on Nanocrystals of Al_2O_3/SiO_2 Mixed Oxides

作　　者：王银叶[1] 马智[2] 刘建明 秦永宁[2] 

机构地区：[1]山西师范大学化学系,041004 [2]天津大学化工学院,天津300072

出　　处：《应用化学》2000年第4期459-461,共3页Chinese Journal of Applied Chemistry

摘　　要：Pyridine, CO and SO 2 were used as probes to characterize the mixed oxides Al 2O 3/SiO 2 by TPD technique. XRD study showed mullite was the major composition of the mixed oxides. The tail gases were analyzed by gas chromatography. The results showed that the nanocrystal mixed oxides exhibited a good adsorbability for pyridine, CO and SO 2. During desorption of pyridine and CO, CO 2 was detected in desorbed mixtures and in the case of SO 2 solid sulphur was found.Pyridine, CO and SO 2 were used as probes to characterize the mixed oxides Al 2O 3/SiO 2 by TPD technique. XRD study showed mullite was the major composition of the mixed oxides. The tail gases were analyzed by gas chromatography. The results showed that the nanocrystal mixed oxides exhibited a good adsorbability for pyridine, CO and SO 2. During desorption of pyridine and CO, CO 2 was detected in desorbed mixtures and in the case of SO 2 solid sulphur was found.

关 键 词：吡啶 CO SO2 程序升温脱附 Al2O3/SiO2纳米晶 

分 类 号：O647.32[理学—物理化学]