CAJ | 학술논문

制备了两个系列不同镍钼负载量的NiMo催化剂,并用X衍射、N2物理吸附和透射电镜进行了表征.以二苯并噻吩为模型硫化物,在高压固定床微型反应器上对该NiMo催化剂的加氢脱硫性能进行了评价,研究了MoS2形貌与催化剂加氢脱硫选择性之间的关系.结果表明,镍钼负载量对MoS2形貌有明显的影响.Mo18Ni4催化剂（含18% MoO3和4% NiO）上MoS2呈多级层状结构,具有较高的加氢脱硫活性和优异的加氢脱硫选择性.加氢选择性与催化剂上活性组分MoS2的堆积层数相关联呈很好的线性关系;堆积层数越多,其加氢选择性也越高.
제비료량개계렬불동얼목부재량적NiMo최화제,병용X연사、N2물리흡부화투사전경진행료표정.이이분병새분위모형류화물,재고압고정상미형반응기상대해NiMo최화제적가경탈류성능진행료평개,연구료MoS2형모여최화제가경탈류선택성지간적관계.결과표명,얼목부재량대MoS2형모유명현적영향.Mo18Ni4최화제（함18% MoO3화4% NiO）상MoS2정다급층상결구,구유교고적가경탈류활성화우이적가경탈류선택성.가경선택성여최화제상활성조분MoS2적퇴적층수상관련정흔호적선성관계;퇴적층수월다,기가경선택성야월고.
Two series of NiMo catalysts supported on alumina with different loadings of molybdenum and nickel were prepared and characterized by X-ray diffraction, N2 sorption, and high-resolution transmission electron microscopy. The performance of NiMo catalysts for hydrodesulfurization was evaluated in a fixed-bed microreactor using dibenzothiophene as a model compound. The effect of morphology of MoS2 phase in NiMo catalyst on its hydrogenation selectivity was investigated. The results indicated that the morphology of MoS2 phases is affected by the loadings of molybdenum and nickel. Mo18Ni4 catalyst (containing 18% MoO3 and 4% NiO), which is provided with the well-known MoS2 slab structures with a multilayered morphology, exhibits high hydrodesulfurization activity and hydrogenation selectivity. The hydrogenation selectivity of NiMo catalyst is linearly correlated with the stacking number of MoS2 slab; the higher the stacking number, the better is the hydrodesulfurization selectivity.