论文部分内容阅读
应用溶剂化金属原子浸渍(Solvated metal atom impregnation)技术制备了D-72树脂负载的和非负载的La-Ni和Ni催化剂.X-ray diffraction和磁测定结果表明La-Ni催化剂中La和Ni已形成合金.合金和镍颗粒极小,平均直径小于4.0nm.负载催化剂的金属粒度小于非负载催化剂.X-rayphotoelectron spectroscopy结果表明Ni主要以零价态存在,La以金属La和La_2O_3存在.在丙酮和二丙酮醇加氢反应中,D-72负载催化剂的活性均高于对应的非负载催化剂.
D-72 resin-supported and unsupported La-Ni and Ni catalysts were prepared by solvated metal atom impregnation technique.The results of X-ray diffraction and magnetic measurements showed that La and Ni in La-Ni catalyst The alloy and nickel particles are extremely small, the average diameter is less than 4.0nm. The metal particle size of the supported catalyst is smaller than that of the unsupported catalyst.X-rayphotoelectron spectroscopy results show that Ni exists mainly in the zero valence state, La exists in the metal La and La_2O_3, And diacetone alcohol hydrogenation, the activity of D-72 supported catalyst was higher than that of the corresponding non-supported catalyst.