负载型磷化钼加氢精制催化剂制备的研究  

Study on the preparation of γ-alumina-supported molybdenum phosphide hydrofining catalysts

作　　者：李庆杰[1] 赵志芳[1] 李凤艳[1] 赵天波[1] 邹德强[1] 孙桂大[1] 李翠清[1] 

机构地区：[1]北京石油化工学院应用化学系,北京102617

出　　处：《燃料化学学报》2006年第1期126-128,共3页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(20273011)

摘　　要：A series of MoP/γ-Al2O3 catalysts with MoP loadings of 5%20% were prepared by direct reduction of the corresponding molybdenum phosphate precursors.Different preparation methods were considered to 20% MoP/γ-Al2O3.The catalysts prepared were characterized by XRD and TG-DTG.The catalytic activity was tested in a continuous flow type microreactor at 340℃,370℃and 3.0MPa.A liquid containing thiophene,pyridine,cyclohexene was used as the model compounds.The results indicate that the active species of supported catalysts are dispersed well on the surface of the supporters,the weight loss of supported catalysts in TG-DTG analysis occurs earlier than unsupported ones.It is found that supported MoP is much more active than unsupported ones and it could maintain higher HYD conversions without loss of HDN activity.The 13% of MoP loading catalyst was most active,the conversion of pyridine,thiophene and cyclehexene could reach 99.15%,98.23% and 100% respectively.The preparation method that γ-Al2O3 was added in at the same time is better than other methods.A series of MoP/γ -Al2O3 catalysts with MoP loadings of 5% - 20% were prepared by direct reduction of the corresponding molybdenum phosphate precursors. Different preparation methods were considered to 20% MoP/γ -Al2O3. The catalysts prepared were characterized by XRD and TG-DTG. The catalytic activity was tested in a continuous flow type microreactor at 340 ℃, 370 ℃ and 3.0 MPa. A liquid containing thiophene, pyridine, cyclohexene was used as the model compounds. The results indicate that the active species of supported catalysts are dispersed well on the surface of the supporters, the weight loss of supported catalysts in TG-DTG analysis occurs earlier than unsupported ones. It is found that supported MoP is much more active than unsupported ones and it could maintain higher HYD conversions without loss of HDN activity. The 13% of MoP loading catalyst was most active, the conversion of pyridine, thiophene and cyclehexene could reach 99.15%, 98.23% and 100% respectively. The preparation method that γ -Al2O3 was added in at the same time is better than other methods.

关 键 词：磷化钼 催化剂 加氢精制 加氢脱硫 加氢脱氮 

分 类 号：O643[理学—物理化学]