MoO_x/Al₂O₃ based catalyst has long been widely used as an active catalyst in Oxidative Desulfurization reaction due to its high stability under severe reaction conditions and high resistance to sulfur poisoning. In this context, 4 and 9 Wt.% MoO₃ grafted on mesoporous γ-Al₂O₃ has been synthesized using the modified atomic layer deposition (ALD) method. Another MoO_3/Al₂O₃ sample was prepared by the conventional wetness impregnation (IM) method, for comparison. The effect of the preparation methods on the metal–support interaction was evaluated using different characterization techniques; including X-ray diffraction, X-ray photoelectron spectroscopy (XPS), N₂-physisorption, transmission electron microscopy (TEM), H₂-temperature-programmed reduction, and FT-IR. Oxidative desulfurization (ODS) reaction of the model fuel oil was used as a probe reaction to examine the catalytic efficiency of the prepared catalysts. ALD method led to samples with much better physicochemical properties than those of the prepared one via the impregnation method. However, the 9 Wt.% MoO₃/Al₂O₃ (ALD) catalyst in the ODS reaction of model fuel oil shows remarkable catalytic performance with ~80%, which has been attributed to the more Mo⁶⁺ surface concentrations relative to Al³⁺ with large pore diameter and surface area. The kinetic study shows that the ODS of DBT follows a pseudo-first-order rate reaction.

基于MoO _x / Al ₂ O ₃的催化剂长期以来一直被广泛用作氧化脱硫反应中的活性催化剂，因为它在苛刻的反应条件下具有很高的稳定性，并且对硫中毒具有很高的抵抗力。在这方面，图4和9％（重量）的MoO ₃上的介孔的γ-Al接枝₂ ö ₃已被使用改性原子层沉积（ALD）方法来合成。另一MoO _{3 /} Al ₂ O ₃通过常规的湿法浸渍（IM）方法制备样品，用于比较。使用不同的表征技术评估了制备方法对金属与载体相互作用的影响。包括X射线衍射，X射线光电子能谱（XPS），N _2-物理吸附，透射电子显微镜（TEM），H _2-程序升温还原和FT-IR。模型燃料油的氧化脱硫（ODS）反应用作探针反应，以检查制备的催化剂的催化效率。ALD法得到的样品的理化特性比通过浸渍法制备的样品更好。但是，MoO ₃ / Al ₂ O ₃为9重量％模型燃料油的ODS反应中的（ALD）催化剂显示出显着的催化性能，约为80％，这归因于相对于具有较大孔径和表面积的Al ³⁺而言，Mo ⁶⁺表面浓度更高。动力学研究表明，DBT的ODS遵循伪一级反应。