[Grafting reaction of tetrabutyltin on the MCM-41 surface and characterization of the grafted product].
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.
Xu
Hai-bing
HB
Research Institute of Photocatalysis, Fuzhou University, 350002 Fuzhou, China.
Wang
Xu-xu
XX
Fu
Xian-zhi
XZ
D002384:Catalysis; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D009947:Organotin Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D013997:Time Factors; D014001:Tin / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
C509968:MCM-41; D009947:Organotin Compounds; D014867:Water; C102881:tetrabutyltin; D014001:Tin; D012822:Silicon Dioxide; D010100:Oxygen