关键词: 金属有机骨架材料 , 吸附脱硫 , 噻吩 , 汽油 , Ａｇ（Ｉ)

Abstract: The desulfurization of model gasoline containing 500 μg/g sulfur by selective adsorption over the metal-organic frameworks (MOFs) of Ag2(4,4'-bipy)2-(O₃SCH₂CH₂SO₃), Ag(4,4'-bipy)NO₃ and Ag(4,4'-bipy)ClO₄ were studied in a static adsorbent at ambient temperature and pressure by using model fuels. The results show that adsorption rate of Ag2(4,4'-bipy)2-(O₃SCH₂CH₂SO₃)，Ag(4,4'-bipy)NO₃ and Ag(4,4'-bipy)ClO₄ reached 70%, and the adsorptive selectivity of Ag2(4,4'-bipy)2-(O₃SCH₂CH₂SO₃) and Ag(4,4'-bipy)ClO₄ to thiophene wouldn't decrease significantly as the concentration of 1-octene increases. Moreover, for the silver-based MOF materials, there is a slight change on their framework after regeneration, however it won't lead to obvious change on the adsorption performance. Meanwhile deep desulfurization of real gasoline were also carried out, and find that sulphur content can decreased from the initial 70 μg/g to 8 μg/g over Ag2(4,4'-bipy)2-(O₃SCH₂CH₂SO₃), and no obvious decrease in desulfurization capability can be observed after recycling 5 times. 

Key words: Metal-organic frameworks, Desulfurization, Thiophene, Gasoline, Ag(I)