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Citation: ZHENG Ying, WANG Xu-Xu, FU Xian-Zhi, WEI Ke-Mei. Grafting Reaction of SnMe4 on MCM-41 Mesoporous Molecular Sieves Surface[J]. Acta Physico-Chimica Sinica, ;2005, 21(02): 146-150. doi: 10.3866/PKU.WHXB20050207 shu

Grafting Reaction of SnMe4 on MCM-41 Mesoporous Molecular Sieves Surface

1.
National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou　350002; College of Chemistry and Materials Science, Fujian Normal University, Fuzhou　350007

Received Date: 9 July 2004
Available Online: 15 February 2005

The reaction of MCM-41 with tetramethyl tin was studied under high vacuum condition, and the composition, structure and properties of the resulted solid were characterized by element analysis, gas volumetry analysis, ICP, XRD, FTIR, DRS(diffuse reflectance spectroscopy), 13C and 119Sn MAS NMR, XPS, BET,TPD, TPR, adsorption of nitrogen etc., respectively. The results showed that the reaction occurred on the surface without destroying the framework structure of the zeolite, leading to the formation of the monografted species (≡Si－O)SnMe3 for MCM-41 at 773 K. Grafting methyltin species on the surface resulted in decrease of the pore size and the mesoporous volume of MCM-41. The reaction temperature of MCM-41 with tetramethyl tin was 343 K which is higher than that of HY zeolite with tetramethyl tin (193 K) and SnMe3/MCM-41 is thermal stable under 673 K and its thermal stability is higher than that of SnMe3/HY.
- Surface organometallic chemistry;Tetramethyl tin;MCM-41;Grafting reaction
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