State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
J Colloid Interface Sci. 2011 Oct 15;362(2):450-6. doi: 10.1016/j.jcis.2011.07.025. Epub 2011 Jul 20.
Mesoporous silica pillared clay (SPC) materials with different contents of H(3)PW(12)O(40) (HPW) heteropoly acid were synthesized by introducing HPW into clay interlayer template in an acidic suspension using sol-gel method. Samples with similar HPW loadings were also prepared by impregnation method using SPC as the support. The results of the characterizations showed that HPW was dispersed more homogeneously in the encapsulated samples than in the impregnated samples. The encapsulated materials exhibited better catalytic performance than the impregnated samples in oxidative desulfurization of dibenzothiophene-containing model oil. The sulfur removal reached up to 98.6% for the model oil under the experiential conditions.
采用溶胶-凝胶法，将杂多酸 H3PW12O40（HPW）引入酸性悬浮液中的粘土层间模板中，合成了具有不同含量 HPW 的介孔硅 pillared 粘土（SPC）材料。还使用浸渍法以 SPC 为载体制备了具有相似 HPW 负载的样品。表征结果表明，HPW 在封装样品中的分散比在浸渍样品中更均匀。在含二苯并噻吩模型油的氧化脱硫中，封装材料表现出比浸渍样品更好的催化性能。在经验条件下，模型油的硫去除率高达 98.6%。
