摘要
以钼酸铵、硝酸镍为活性相前体 ,以γ -Al2 O3 为载体 ,采用等体积分步浸渍法和程序升温氨还原氮化法制备负载型双组分过渡金属氮化物NiMoNx/γ -Al2 O3 催化剂 ,采用 16 5 #溶剂油对催化剂进行重芳烃饱和加氢反应工艺参数的考察 ,并使用XPS方法对氮化物催化剂进行表征。
NiMoN x/γ-Al 2O 3,a γ-alumina supported bimetallic transition metal nitride,was synthesized as a catalyst,using ammonium molybdate and nickel nitrate as active precursor,and by means of multi-step impregnation and NH 3-TPR.No.165 solvent oil was used to study the process parameter of heavy-aromatics in the oil hydrogenation over the catalysts.Results from XPS characterization were used to illustrate surface reduction properties and the role of Ni metal in the reaction.The reasons for reduction before reaction and surface ion state changes during reduction were also illustrated.It is concluded that Ni sites and activated hydrogen Mo sites on the catalysts create and modify the catalytic active sites which are also responsible for oil hydrogenation reaction.
出处
《石油化工》
CAS
CSCD
北大核心
2002年第7期505-509,共5页
Petrochemical Technology
基金
教育部科学技术 (重点 ) 990 18
教育部 (博士点 )基金( 2 0 0 0 0 0 5 5 2 0 )资助项目
