MCM-41表面新戊基锆和氧化锆的制备

Preparation of MCM-41 Surface Neopentylzirconium and Zirconia

首次在高真空系统中利用 Zr[CH2C(CH3)3]4与表面羟基的反应把-Zr[CH2C(CH3)3]2基团接枝在介孔硅胶 MCM-41的表面上，经进一步氧化和水解得到了表面富锆 MCM-41材料。采用元素分析、 FTIR、固态 NMR、 X射线粉末衍射及吡啶化学吸附等分别表征了材料的组成及性质。初步研究表明接枝法制备的 ZrMCM-41比水热法合成的样品有更好的吸附和催化性能。

：-Zr[CH2C(CH3)3]2 groups were grafted on surface of MCM-41 by a reaction with the surface hydroxyls in a high vacuum system for the first time. Hydrolysis or oxidation of the grafted groups resulted in richness of zirconium on the surface of MCM-41. The properties and composition of the materials were characterized by elemental analysis, FTIR, solid-state NMR, XRD and pyridine adsorption.The results showed that the catalytic and adsorptive performance of the grafted ZrMCM-41 was better than that of the hydrothermally synthesized ZrMCM-41.