Ru/CNFs催化剂催化氨分解制氢(英文)  

Carbon Nanofiber-Supported Ru Catalysts for Hydrogen Evolution by Ammonia Decomposition

作　　者：段学志[1] 周静红[1] 钱刚[1] 李平[1] 周兴贵[1] 陈德[2] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,上海200237 [2]挪威科技大学化学工程系,特隆赫姆7491,挪威

出　　处：《催化学报》2010年第8期979-986,共8页

基　　金：Supported by the National Natural Science Foundation of China (20776041);the Creative Team Development Project of Ministry of Education of China (IRT0721);the 111 Project of Ministry of Education of China (B08021)

摘　　要：研究了鱼骨式碳纤维(CNFs)和管式碳纤维(CNTs)负载Ru催化剂的氨分解反应活性.结果表明,Ru/CNFs催化剂上氨分解活性高于Ru/CNTs催化剂.通过改变Ru负载量或载体表面的含氧基团来调节Ru的粒径.Ru的活性位随着Ru颗粒尺寸的增大而增加.CNFs上的含氧基团对Ru颗粒的氨分解活性影响很大.在相同粒径的Ru颗粒上,CNFs表面的含氧基团增加了Ru的活性.Carbon nanofibers （CNFs） with fish-bone graphene alignment and carbon nanotubes （CNTs） were used to support ruthenium for ammonia decomposition.The Ru nanoparticles on the CNF supports are more active than those on CNT supports.The Ru particle size was adjusted by changing the Ru loading or by introducing oxygen containing groups onto the CNF surface.The site activity increases when the Ru crystal size increases.The oxygen groups on the CNFs have a remarkable effect on ammonia decomposition over the Ru nanoparticles.On identically sized Ru crystals,oxygen on the CNFs clearly enhances ammonia decomposition over the Ru/CNFs.

关 键 词：碳纤维 钌 负载型催化剂 氨分解 氢气 结构敏感性 

分 类 号：TQ116.2[化学工程—无机化工]