Synthesis and catalytic applications of metal-organic frameworknanocomposite modified by ferric ions containing sandwich polyoxometalate

In this thesis, B-type sandwich polyoxometalate of [(PW۹O۳۴)۲Fe۴(H۲O)۲]۶-wasimmobilizedinto porous composite cavities of Cr-MIL-۱۰۱ by simple anion exchange[۱,۲]. The formation ofP۲W۱۸Fe۴@MIL-۱۰۱ nanocomposite was confirmed by FT-IR, TGA, BET, SEM, EDX, ICP,BET and powdery XRD methods. The catalytic activity of nanocomposites was investigated inoxidation of sulfides to sulfons with H۲O۲ at room temperature[۳]. The effect of temperature onstability and catalytic activity of the P۲W۱۸Y۳@MIL-۱۰۱ was investigated. The effects ofdifferent dosages of catalyst, type of solvent, reaction time, amount of oxidant in this catalyticsystem were investigated. The new P۲W۱۸Fe۴@MIL-۱۰۱ nanocomposite exhibited wellrecyclability and reusability in at least five consecutive reaction cycles without significant loss ofactivity or selectivity

کلیدواژه ها:

B-typesandwich polyoxometalate ، Cr-MIL-۱۰۱ ، Sulfides ، Homogeneous andheterogeneous catalysts