MoO_3含量对MoO_3-ZrO_2-Al_2O_3结构及HDS性能的影响  

Effect of MoO_3 Content on the Structure and HDS Performance of MoO_3-ZrO_2-Al_2O_3

作　　者：林婷婷 周浩 白英芝[1] 王海彦[1] LIN Ting-ting;ZHOU Hao;BAI Ying-zhi;WANG Hai-yan(Liaoning Shihua University, Fushun Liaoning 113001, China)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

出　　处：《当代化工》2018年第4期677-679,683,共4页Contemporary Chemical Industry

基　　金：大学生创新创业训练计划项目;项目号:201510148048

摘　　要：共沉淀法制备了不同MoO_3质量分数的MoO_3-ZrO_2-Al_2O_3三元复合氧化物,利用X射线衍射、N2吸附-脱附分析不同MoO_3质量分数的MoO_3-ZrO_2-Al_2O_3晶相结构和形貌。以FCC柴油馏分为原料,在固定床反应器上进行MoO_3-ZrO_2-Al_2O_3的HDS活性评价。结果表明:适量MoO_3的添加未形成新的物种,但使MoO_3-ZrO_2-Al_2O_3的比表面积增大,催化剂活性中心数目增多。当MoO_3含量达30%(wt)时,MoO_3在复合氧化物表面高度分散,其FCC柴油馏分的脱硫率达83.7%。MoO3-ZrO2-Al2O3 composite with different MoO3 mass fraction was synthesized by coprecipitation method. The MoO3-ZrO2-Al2O3 was characterized by X-ray diffraction, N2 adsorption – desorption to research the structure and morphology of MoO3-ZrO2-Al2O3 with difference MoO3 content. The FCC diesel fraction HDS experiment on MoO3-ZrO2-Al2O3 catalyst was carried out in a fixed bed reactor. The results showed that, after the introduction of appropriate amount MoO3, no new species were produced,but the specific surface area and activity site amount of MoO3-ZrO2-Al2O3 were increased. When the content of MoO3 was 30%（wt） in MoO3-ZrO2-Al2O3, MoO3 was highly dispersed on the surface of composite. The hydrodesulfurization conversion rate of FCC diesel fraction with MoO3-ZrO2-Al2O3 catalyst reached 83.7%.

关 键 词：MOO3 含量 MoO3-ZrO2-Al2O3 HDS 

分 类 号：TQ426.64[化学工程]