钴和镍对MoP/γ-Al_2O_3加氢精制催化剂活性的影响  

EFFECT OF Co AND Ni ON HYDROTREATING ACTIVITY OF MoP/γ-Al_2O_3 HYDROFINING CATALYST

作　　者：赵志芳[1,2] 李凤艳[2] 赵天波[2] 邹德强[2] 

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]北京石油化工学院应用化学系

出　　处：《石油炼制与化工》2004年第5期12-14,共3页Petroleum Processing and Petrochemicals

基　　金：国家自然科学基金项目(20273011);国家重大基础研究项目(G2000048003)。

摘　　要：通过浸渍、干燥、焙烧、程序升温还原等步骤制备了含助剂的MoP/γ-Al2O3催化剂,考察了助剂Co和Ni的加入及Co的加入量对其加氢精制活性的影响。TG-DTG分析表明,与无负载磷化钼热重分析结果相比,该MoP/γ-Al2O3。催化剂从相应磷钼酸盐转化为磷化物的转化温度降低120～140℃。对含噻吩、吡啶和环己烯的复配模型化合物,在高压连续微反装置上进行了加氢活性评价(反应温度分别为340℃和370℃,反应压力为3.0 MPa)。结果表明:对于该复配的含硫、含氮和含烯烃的模型化合物,加入助剂Co比加入助剂Ni更有效,Co的最佳加人量为2%。在反应温度为370℃时,制备的最佳催化剂可全部脱除模型化合物中的噻吩、吡啶和环已烯。A promotor-contained MoP/γ-Al2O3 catalyst was prepared by impregnaton, drying, calcination and temperature-programmed reduction. The effect of Co, Ni and different Co loadings were studied. TG-DTG analysis indicated that comparing with the unsupported molybdenum phosphide, the Ni/Co-promoted MoP/γ-Al2O3 could be reduced from phosphate to phosphide in a 120 -140℃ lower temperature. The catalytic tests were carried out in a continuous-flow reactor at 340℃ and 370℃ under 3. 0MPa using a model compound containing thiophene, pyridine and cyclohexene. The results revealed that Co was a more effective promotor than Ni to the model compound. The optimum Co loading was 2%. All cyclohexene, thiophene and pyridine could be removed at 370℃ with the optimal catalyst.

关 键 词：钴 镍 MoP/γ-A12O3 加氢精制催化剂 活性 助催化剂 磷化钼 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]