Metal fluoride materials with complex pore structure and organic functionality
Metal fluoride materials with complex pore structure and organic functionality
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DOI：
10.1039/c0jm02204g
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发表时间：
2011-01-01
影响因子：
--
通讯作者：
Kemnitz, Erhard
中科院分区：
文献类型：
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作者：
Noack, Johannes;Teinz, Katharina;Kemnitz, Erhard
溶胶-凝胶法制备的金属氟化物（MgF 2、AlF 3和CaF 2）首次用于制备具有复杂孔结构（大孔、中孔和微孔）的三维有序大孔固体。这些金属氟化物的表面积大于300 m2·g-1，并显示中等至强的刘易斯酸性，这使它们对催化应用和气体吸附和分离具有吸引力。结果表明，这些性能得到保留，并通过引入大孔补充。本文报道了由具有确定的复杂孔结构的纳米金属氟化物制成的薄膜和块体材料的制备。此外，有机改性的氟化镁溶胶的使用已被探索的情况下，苯基膦酸，允许改变表面性质。
For the first time, sol-gel derived metal fluorides (MgF2, AlF3 and CaF2) were used in the preparation of three-dimensionally ordered macroporous solids with complex pore structures (macro-, meso- and micropores). These metal fluorides exhibit surface areas larger than 300 m(2) g(-1) and show medium to strong Lewis acidity which makes them attractive for catalytic applications and for gas adsorption and separation. It was shown that these properties are retained and complemented by the introduction of macropores. Here the preparation of films and bulk materials made from nano-metal fluorides with defined complex pore structure is reported. Furthermore, the use of organically modified magnesium fluoride sols has been explored for the case of phenyl phosphonic acid, allowing alteration of surface properties.