1.1 多级孔MOFs材料 1.1.1 研究背景 在过去的二十年中，基于大量无机和有机组分选择的MOFs的多功能性，导致超过20000个具有独特拓扑结构的MOFs[1]。

用于精细化学转化和分离过程的MOFs的优化取决于限制孔结构，阻碍分子扩散和传质，特别是当涉及大分子时。

除了中孔甚至大孔外，具有微孔的多级孔MOFs的合成吸引了大量研究者的兴趣。

延伸配体、混合配体、表面活性剂模板合成、酸浸和调制合成等各种方法已被报道为可能的多级孔MOFs，但稳定的介孔MOFs数量相对较少（ 50nm）结构的存在可能通过减少吸附剂中的表面积和吸附位点的数量来降低选择性和吸附容量，因为气体吸附分离通常依赖于微孔高吸附能力和更大的选择性差异。

因此，多级孔材料是否适用于气体吸附分离仍需要验证[18]。

1.3 实验目的 本实验采用模板法合成了多级孔H-UiO-66，考察不同合成配比、合成温度及时间对多级孔结构的影响，并对材料进行PXRD、N2吸/脱附等温线表征，在不同吸附温度下测定其对正庚烷/甲基环己烷双组分动态吸附分离性能。

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