搜索结果: 1-4 共查到“有机合成化学 MCM-41”相关记录4条 . 查询时间(0.062 秒)
Mesoporous Ba/MCM-41 type materials (Ba/MCM-41) with high Ba/Si molar ratios between 0.025 and 0.1 were synthesized by direct hydrothermal synthesis. The samples were characterized by XRD, nitrogen ad...
摘要 制备了不同Al含量的Al-MCM-41试样，其中Si/Al比值最小为3，即最高含铝量x~A~l=0.303。X射线粉末衍射(XRD)分析表明样品具有MCM-41的特征结构，氮气吸附研究表明，样品呈现Ⅳ型吸附等温线，具有孔径分布均一的中孔结构。文中还利用^2^7AlMASNMR研究了试样中Al的化学环境，结果表明，即使在高铝含量的情况下，样品中的铝原子仍以四配位结合在MCM-41的硅骨架上，未...
介孔分子筛MCM-41的修饰及在非均相催化有机合成中的应用
MCM-41 修饰 非均相催化 有机合成
2007/12/22
摘要 以反应类型分类综述了近年来介孔分子筛MCM-41的修饰及在非均相催化有机合成, 特别是在手性不对称合成、烯烃环氧化等领域的研究进展, 并对其发展趋势进行了展望.
Cumene Cracking on Modified Mesoporous Material Type MCM-41
MCM-41 mesoporous grains forms Cumene cracking
2010/4/19
The effect of ionic exchange degree of H(X)-AlMCM-41 materials, the method of its exchange and its grain form were investigated for mesoporous catalytic activity in the cumene cracking reaction. Benze...