Abstract The microporous MOF-74(Ni) was impregnated on mesoporous γ-Al2O3 beads leading to successful formation of a hierarchical multiporous composite MOF-74(Ni)@γ-Al2O3 containing 10 wt% MOF-74(Ni) via solvothermal method. The confinement effect introduced by the channels of γ-Al2O3 beads resulted in ultrathin continuous films of MOF-74(Ni) which has significantly enhanced the surface area and surface utilization rate by ca. 16%. The composite showed excellent adsorptive desulfurization in the order of dibenzothiophene (DBT) ≈ benzothiophene (BT) > 4,6-dimethyldibenzothiophene > 3-methyl thiophene and was applied efficiently for ultra-deep adsorptive desulfurization. The 35 ppmwS concentrations of DBT and BT in model oil were decreased down to 2.30 ± 0.20 and 4.28 ± 0.31 ppmwS, respectively, with high selectivity. The reason behind excellent ultradeep desulfurization and high selectivity of S-heterocycles over aromatics is utilization of available unsaturated metal and strong metal-S bonding. In addition, the high mechanical and chemical stability of millimeter-sized composite enabled the easy recyclability with excellent efficiency and high fluidity. All the above excellency shall endow the composite to apply potentially in practical (especially ultra-deep) adsorptive desulfurization process.

中文翻译：

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将微孔 MOF-74(Ni) 限制在介孔 γ-Al 2 O 3 珠中以获得优异的超深和选择性吸附脱硫性能

摘要 将微孔 MOF-74(Ni) 浸渍在介孔 γ-Al2O3 珠上，通过溶剂热法成功形成了含有 10 wt% MOF-74(Ni) 的分层多孔复合材料 MOF-74(Ni)@γ-Al2O3。γ-Al2O3 珠的通道引入的限制效应导致 MOF-74(Ni) 的超薄连续薄膜，显着提高了表面积和表面利用率约 16%。该复合材料按二苯并噻吩（DBT）≈苯并噻吩（BT）> 4,6-二甲基二苯并噻吩> 3-甲基噻吩的顺序显示出优异的吸附脱硫能力，可有效应用于超深吸附脱硫。模型油中 DBT 和 BT 的 35 ppmwS 浓度分别降至 2.30 ± 0.20 和 4.28 ± 0.31 ppmwS，具有高选择性。出色的超深脱硫和 S-杂环相对于芳烃的高选择性背后的原因是利用了可用的不饱和金属和强金属-S 键合。此外，毫米级复合材料的高机械和化学稳定性使其易于回收，具有出色的效率和高流动性。上述所有优点都赋予了该复合材料在实际（特别是超深）吸附脱硫工艺中的应用潜力。