金属有机骨架化合物MIL-101（Cr）作为MOFs材料的子类在众多领域皆有广泛的应用，但其在酸性条件下的稳定性还不够清楚。研究了MIL-101（Cr）在不同醋酸溶液中的结构稳定性，主要通过XRD、FTIR、SEM/EDS和氮气吸附脱附等表征手段来研究不同醋酸浓度、浸泡时间和温度对MIL-101（Cr）结构稳定性的影响。结果表明，MIL-101（Cr）在酸性溶液中具有很高的稳定性，即使在100℃的条件下浸泡在醋酸溶液中5 d仍然能保持其基本结构和结晶度。

MIL-101(Cr),a subclass of Metal-organic framework (MOF) materials,has wide applications in many fields,but its structure stability under acidic conditions still remains unclear.In this paper,the structure stability of MIL-101(Cr) in different acetic acid solutions is investigated.The influences of acetic acid concentration,soaking time and temperatures on the structure stability of MIL-101(Cr) are studied by means of XRD,FTIR,SEM/EDS and nitrogen adsorption.The results illustrate that MIL-101(Cr) is highly stable in acidic solution and can retain the basic structure and crystallinity even if it has been soaked in acetic acid solution at 100℃ for 5 days.

王玉明(1991-),男,硕士研究生,主要从事MOFs材料固体粉末及其膜的稳定性和应用研究,chadaking@163.com