新型介孔分子筛Sn-SBA-1的合成与表征  

Synthesis and Characterization of Sn-incorporated SBA-1 Cubic Mesoporous Molecular Sieves

作　　者：雒旭[1] 季东[2] 钱广[1] 吕高孟[1] 齐彦兴[1] 

机构地区：[1]中国科学院兰州化学物理研究所工程中心羰基合成与选择性氧化国家重点实验室,甘肃兰州730000 [2]中国石油兰州石化分公司石油化工研究院,甘肃兰州730060

出　　处：《分子催化》2006年第5期409-413,共5页Journal of Molecular Catalysis(China)

摘　　要：在强酸性条件下沿“S+X-I+”路线合成了具有立方结构(空间点群为Pm3n)的含Sn介孔分子筛SBA-1,并通过多种手段对其进行表征:XRD显示合成的介孔材料具有良好有序的立方结构,N2吸脱附测得样品有大的孔径(≈2nm)和比表面积(>1100m2g-1),UV-vis和FT-IR证明杂原子Sn替代S i进入分子筛骨架,并且以高分散四面体配位形式存在于分子筛骨架中,SEM则确定合成出来的材料为球形颗粒,粒径在2-4μm之间.The 3d-cubic Pm3n Sn-incorporated SBA-1 mesoporous molecular sieves were directly synthesized by the route of ＂S^＋ X I ^＋ ＂under strongly acidic conditions, and characterized by various techniques. XRD showed that the synthesized mesoporous materials had a well ordered cubic structure. N2 adsorption/desorption measurements confirmed that the resultant samples had large mesoporcs （≈2nm） and high surface areas （ 〉 1100m^2g^-1）. UV-vis and FT-IR results revealed that incorporated tin species existed in a highly dispersed state and had tetrahedral coordination. SEM results rcvcaled that the size of spherical Sn-SBA-1 was 2-4μm.

关 键 词：介孔材料 Sn—SBA-1 合成 表征 

分 类 号：O643.3[理学—物理化学]