含镓丝光沸石的合成与表征

采用水热晶化法直接合成合镓丝光沸石，利用多种技术证明镓位于分子筛骨架上、ＸＲＤ表明镓的引入导致晶胞参数增加；７１ＧａＭＡＳＮＭＲ证明镓以ＧａＯ４四面体形式存在，合成沸石中不存在Ｇａ（Ｈ２Ｏ）。比较了含镓丝光沸石与硅铝丝光沸石的异丙苯裂解活性。

The Synthesis and Characterization of Mordenite Containing Gallium

allium-containing mordenite was hydrothermally synthesized. It is proved that Ga atom is located within the framework of mordenite zeolite. XRD shows that the introduction of Ga atom causes increase in the unit cell volume. The result of 71Ga MAS NMR verifies that Ga atom exists in the form of GaO4 tetrahedra. and Ga(H2O) canon can not be found in the zeolite. A comparison of catalytic activity was made between gallium-containing mordenite and Si-Al mordenite in cracking reaction of isopropylbenzene.