【摘要】 采用挤条和等体积浸渍法制备了一种ZSM-5催化剂和四种金属改性的丝光沸石催化剂,采用XRD、低温氮气吸脱附、NH₃-TPD和Py-IR技术对催化剂进行物化性质表征,在固定床反应器上进行MTG重油中均四甲苯烷基转移反应性能评价。研究结果表明,丝光沸石的孔结构更适合均四甲苯烷基转移反应,HZSM-5的孔径较小且酸性强,更容易堵塞孔道导致催化剂活性快速下降;Mo改性的丝光沸石催化剂具有较多的弱B酸中心,具有良好的烷基转移能力,均四甲苯烷基转移转化率达到39.42%。更多还原

【Abstract】 A HZSM-5 and four metal modified mordenite（MOR） zeolite catalysts were prepared by extrusion and incipient wetness method. The textural and physiochemical property of the catalysts were characterized by XRD, low temperature N₂ adsorption-desorption, NH₃-TPD and Py-IR. Catalytic performances of the catalysts in transalkylation of the durene in MTG heavy oil were tested in a fixed bed reactor. The results showed that the pore structure of MOR is more suitable for durene transalkylation,while HZSM-5 has poor catalytic stability due to its small pore system and strong acidity which results in the coking blockage of the tunnels. The Mo/MOR catalyst which had more weak B acid sites possessed the best durene transalkylation activity and the durene conversation could reach 39.42%.更多还原