以醋酸盐为矿化剂合成金属有机骨架MIL-101

以醋酸钠为矿化剂, 通过水热合成法直接获得了较纯净的Material Institut Lavoisier-101(MIL-101). 样品经粉末X射线衍射、比表面积及孔径分布和热重分析表征, 并与以氢氟酸为矿化剂合成的MIL-101进行了比较. 结果表明, 以醋酸钠为矿化剂合成的MIL-101的性能优于以氢氟酸作为矿化剂合成的MIL-101, 并且样品经后续纯化处理后能进一步提高比表面积和孔容; 用非定域密度泛函法(NLDFT)分析计算得到了MIL-101的孔结构信息. 合成的MIL-101骨架能稳定至300 ℃以上, 其热稳定性略低于以氢氟酸作为矿化剂合成的MIL-101.

Synthesis of Metal Organic Framework MIL-101 with Acetate as Mineralization Agent

Pure Material Institut Lavoisier-101(MIL-101) sample was directly synthesized without any purification treatment using sodium acetate as mineralization agent.The synthesized samples were characterized by powder X-ray diffraction(XRD),specific surface area,pore size distribution and thermogravimetric(TG) analyses and were compared with the MIL-101 synthesized with hydrofluoric acid as mineralization agent.The results show that sodium acetate is superior to hydrofluoric acid as mineralization agent and the specific surface area and pore volume of the two samples are further improved by purification treatment.The aperture information of MIL-101 samples were calculated accurately via the non-local density functional method(NLDFT).The MIL-101sample synthesized with sodium acetate as mineralization agent is stable above 300 ℃,slightly lower than the MIL-101 sample synthesized with hydrofluoric acid as mineralization agent.