Xu Hai-bing, Wang Xu-xu, Fu Xian-zhi
Research Institute of Photocatalysis, Fuzhou University, 350002 Fuzhou, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2005 Mar;25(3):470-2.
MCM-41 modified with tetrabutyltin and Sn-O-MCM-41 obtained from calcination of the modified MCM-41 in pure oxygen were characterized by XRD, FTIR, UV-Vis DRS, and TG analysis. It was found that the hydrothermal stability, surface acidity, and coordinative states of tin atoms on both samples were evidently different. After calcination, the surface tin atoms of sample remained in the tetrahedronal structure, and the hydrothermal stability and surface acidity were improved. According to the results, the reason for the enhancement of catalytic activity of Sn-O-MCM-41 was discussed.
采用XRD、FTIR、UV-Vis DRS和TG分析对用四丁基锡改性的MCM-41以及将改性后的MCM-41在纯氧中煅烧得到的Sn-O-MCM-41进行了表征。发现两个样品上锡原子的水热稳定性、表面酸性和配位状态明显不同。煅烧后，样品表面的锡原子保持四面体结构，水热稳定性和表面酸性得到提高。根据这些结果，讨论了Sn-O-MCM-41催化活性增强的原因。
