羧酸配体金属有机骨架材料在吸附脱硫领域的应用进展

Progresses in metal-organic framework materials based on carboxylate ligands for adsorption desulfurization

介绍了以羧酸为配体设计构筑金属有机骨架材料(MOFs)的合成方法及其对天然气和轻质油品中的硫化氢、噻吩、硫醇、硫醚等有机硫化物的吸附脱除情况。MOF s的主要合成方法有配体拓展、混合配体、模块构筑、后修饰合成,有机配体的结构及中心金属的性质和配位方式对MOFs骨架结构和功能起决定性作用,MOFs更适用于常温、常压对噻吩、硫醚等非活性硫组分非破坏性脱除,在吸附硫化氢、硫醇等活性硫组分时MOFs骨架结构受到极大的破坏。合成高工作容量、高选择性MO Fs用于非活性硫组分的吸附是未来发展的趋势。

Th e methods for preparing carboxylic acid ligands and designing functional metalorganic framework materials（MOFs） were introduced. The applications of MOFs in the adsorption desulfurization of light oil and natural gas were summarized. The major ways for the synthesis of MOFs are expanding ligands,mixing ligands,module construction and post-synthetic modification. The structure and function of MOFs are determined by the structure of the organic ligands,properties of central metals and coordination modes. MOFs are more applicable to the removal of inactive sulfur such as thiophene and thioether. However the structure of MOFs is destroyed when they are used to remove the active sulfur components such as mercaptan and hydrogen sulfide. It was predicted that,the synthesis of MOFs with high adsorption capacity and selectivity and their applications in the adsorption of the inactive sulfur continents would be the primary trends in the future.