catalytic activities of the homogeneous P2W18Sn3 and P2W18Ce3 and the corresponding heterogeneous catalysts were examined in the oxidation of sulfides to sulfones with H2O2 as the oxidant at room temperature. The effects of different dosages of polyoxometalates, type of solvent, reaction time, amount of catalyst and oxidant in this catalytic system were investigated. The new P2W18Sn3@MIL-101 and P2W18Ce3@MIL-101
[(HOSn IV OH) 3 (PW 9 O 34 ) 2 ] 12- (P 2 W 18 Sn 3 ) 和 [(OCe IV O) 3 (PW 9 O 34 ) 2 ] 12-的A型夹层多
金属氧酸盐(P 2 W 18 Ce 3 ) 首次被固定在多孔
金属-有机框架 MIL-101(Cr) 中。FT-IR、粉末 X 射线衍射、
SEM-EDX、ICP 分析、N 2吸附和热重分析共同证实了多
金属氧酸盐在 MIL-101(Cr) 笼中的固定和良好分布。研究了均相P 2 W 18 Sn 3和P 2 W 18 Ce 3及相应的多相催化剂在室温下以H 2 O 2为氧化剂将
硫化物氧化为砜的催化活性。考察了多
金属氧酸盐用量、溶剂种类、反应时间、催化剂用量和氧化剂对催化体系的影响。新的 P 2 W 18 Sn 3 @MIL-101 和 P2 W 18 Ce 3 @MIL-101 纳米复合材料在至少五个连续的