| 1 | Effect of a second metal(Co,Fe, Mo and W) on performance of Ni_2P/SiO_2 for hydrodeoxygenation of methyl laurate显示文摘Ni_2P/SiO_2 and bimetallic Ni MP/Si O2(M = Co, Fe, Mo, W; Ni/M atomic ratio=5) catalysts were prepared by the temperature-programmed reduction method. The catalysts and their precursors were characterized by means of UV–Vis DRS, H_2-TPR, XRD, TEM, CO chemisorption and NH_3-TPD. Their performance for the deoxygenation of methyl laurate was tested on a fixed-bed reactor. The results show that the main phase was Ni_2 P in all catalysts, and M(M = Co, Fe, Mo, W) entered the lattice of Ni_2 P forming solid solution. Different from Fe and Co, the introduction of Mo and W into Ni_2P/SiO_2 reduced the phosphide particle size and increased the acid amount. In the deoxygenation reaction, the turnover frequency of methyl laurate increased on the catalysts in the order of NiMoP/SiO_2, Ni_2P/SiO_2, Ni WP/Si O2, NiFeP/SiO_2 and NiCoP/SiO_2, which is influenced by the size of phosphide particles and the interaction between Ni and M(M = Fe, Co, Mo or W). The introduction of the second metal(especially Mo and W) into Ni_2P/SiO_2 promoted the hydrodeoxygenation pathway. This is mainly attributed to the interaction between Ni and the second metal. Finally, the Ni MoP/SiO_2 catalyst was tested at 340 oC, 3 MPa, methyl laurate WHSV of 14 h-1and H_2/methyl laurate molar ratio of 25 for 132 h, and its deactivation took place. We found that the catalyst deactivation mainly resulted from carbonaceous deposit rather than the sintering of metal phosphide crystallites. | Zhengyi Pan Rijie Wang Ziyang Nie Jixiang Chen | 2016 | Journal of Energy Chemistry2016，25，3： | 3 |
| 2 | 负载型NiMo加氢处理催化剂氧化物载体研究进展显示文摘以NiMo在加氢精制中的应用为线索,按催化剂载体的不同,简介了以单一氧化物和复合氧化物为载体的催化剂的制备方法,总结了NiMo为活性组分,氧化物为载体的加氢精制催化剂的应用进展。按照载体的不同,从单一氧化物载体Al_2O_3,TiO_2和SiO_2,以及复合氧化物载体角度总结了催化剂在加氢精制中的应用。氧化物载体具有热稳定性好,酸碱性适宜的特点,一直是人们研究的重要内容。 | 王哲 吴文玉 白英芝 王海彦 | 2016 | 应用化工2016，45，6： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员