MoO_(3)用量对5%TiO_(2)-nMoO_(3)催化剂加氢脱硫性能的影响  

Effect of MoO_(3)content on hydrodesulfurization performance of 5%TiO_(2)-nMoO_(3)catalysts

作　　者：贺友 林世静[1] 时正阳 李双 迟姚玲[1] 刘锐宇 张网 卢鸿浩 侯雨良 靳广洲[1] He You;Lin Shijing;Shi Zhengyang;Li Shuang;Chi Yaoling;Liu Ruiyu;Zhang Wang;Lu Honghao;Hou Yuliang;Jin Guangzhou(Beijing Key Laboratory of Fuel Cleaning and University Catalytic Emission Reduction,School of New Materials and Chemical Engineering,Beijing Institute of Petroleum and Chemical Technology,Beijing 102617,China)

机构地区：[1]北京石油化工学院新材料与化工学院燃料清洁化与高校催化减排北京重点实验室,北京102617

出　　处：《工业催化》2023年第11期55-60,共6页Industrial Catalysis

基　　金：北京市大学生创新创业训练计划项目资助(21010182001/014)。

摘　　要：采用熔融盐焙烧法和浸渍法制备了不同MoO_(3)用量的5%TiO_(2)-nMoO_(3)催化剂,在自制高压微反装置上以二苯并噻吩/环己烷溶液为模型反应物评价了催化剂的加氢脱硫活性。采用XRD,BET,H_(2)-TPR,NH 3-TPD等手段对催化剂试样的物相结构、比表面积、还原性能、表面酸性等进行表征分析。结果表明,在反应压力4.0 MPa、液时空速10 h^(-1)、氢油体积比600∶1的条件下,增大MoO_(3)用量,加氢脱硫活性先增大后降低,当MoO_(3)用量为15%时,在280℃、300℃、320℃下,对二苯并噻吩的加氢脱硫转化率最大能够达到30.08%、95.35%、97.42%。5%TiO_(2)-nMoO_(3)催化剂的二苯并噻吩脱硫反应主要以直接脱硫途径进行。5%TiO_(2)-nMoO_(3)catalysts with different amounts of MoO_(3)were prepared by molten salt roasting and impregnation.The hydrodesulfurization activity of the catalysts was evaluated by using dibenzothiophene/cyclohexane solution as model reactant in a self-made high pressure micro reactor.XRD,BET,H_(2)-TPR and NH 3-TPD were used to characterize the phase structure,specific surface area,reduction performance and surface acidity of the catalysts.The results showed that when the reaction pressure was 4.0 MPa,liquid hourly space velocity was 10 h^(-1),and the volume ratio of hydrogen to oil was 600∶1,the hydrodesulfurization activity increased firstly and then decreased with increasing of MoO_(3)amount.When the amount of MoO_(3)was 15%,the maximum hydrodesulfurization conversion of dibenzothiophene could reach 30.08%,95.35%and 97.42%at 280℃,300℃and 320℃.The desulfurization of dibenzothiophene over 5%TiO_(2)-nMoO_(3)catalyst was mainly carried out by direct desulfurization.

关 键 词：催化化学 熔融盐焙烧法 TiO_(2)-MoO_(3)催化剂 二苯并噻吩 加氢脱硫 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]