CAJ | 학술논문

采用水热合成法，通过改变水热晶化条件，制备得到系列 MIL-101（Cr）金属-有机骨架材料。XRD、SEM 及N2吸附等现代表征结果表明，水热晶化时间和合成体系中反应物浓度会对所得 MIL-101（Cr）的结晶度、晶体形貌及孔结构性能产生较大影响。当水热晶化温度为220℃时，最佳晶化时间为8 h，物料 n（H2 O）： n（Cr）＝370：1。在此水热晶化条件下所合成的 MIL-101（Cr）样品不仅具有更高的结晶度、更大的比表面积和孔体积，以及更为完整的晶体形貌，而且在 H2 O2氧化环己烷反应中显示出更高的催化活性。
채용수열합성법，통과개변수열정화조건，제비득도계렬 MIL-101（Cr）금속-유궤골가재료。XRD、SEM 급N2흡부등현대표정결과표명，수열정화시간화합성체계중반응물농도회대소득 MIL-101（Cr）적결정도、정체형모급공결구성능산생교대영향。당수열정화온도위220℃시，최가정화시간위8 h，물료 n（H2 O）： n（Cr）＝370：1。재차수열정화조건하소합성적 MIL-101（Cr）양품불부구유경고적결정도、경대적비표면적화공체적，이급경위완정적정체형모，이차재 H2 O2양화배기완반응중현시출경고적최화활성。
A series of metal organic framework MIL-101(Cr)have been successfully synthesized by opti-mizing hydrothermal crystalline conditions,and were applied to the liquid phase oxidation of cyclohexane with hydrogen peroxide(H2 O2 )as oxidant. The characteristic results from XRD,N2 adsorption and SEM showed the hydrothermal crystalline time and concentration of Cr species had a great influence on crystal-linity,morphology and pore structure properties of resultant MIL-101(Cr)materials. Among all MIL-101 (Cr)samples,the sample hydrothermally synthesized at 220 ℃ for 8 h with the H2 O/ Cr molar ratio of 370 exhibited the highest crystalline and specific surface area,more complete crystal morphology,and higher catalytic activity for the liquid phase selective oxidation of cyclohexane.