作　　者： ; ; ; ;

机构地区： 华南理工大学化学与化工学院

出　　处： 《化工学报》 2005年第9期1673-1678,共6页

摘　　要： 开发了利用分子氧作为惟一氧化剂、高效一步法氧化正辛醇到辛酸的固体RuCo(OH)2CeO2催化剂.使用了XRD和XPS等表征手段分析了老化温度对催化剂结构的影响,认为催化剂中存在CeO2和Co(OH)2两种微晶结构,Ru以较高的四价氧化态很好地分散在催化剂中.元素Ru、Co和Ce之间的协同效应对于在温和条件下从正辛醇到正辛酸一步法转化起着高效的促进作用.该反应的机理为首先从正辛醇到辛醛的β消除,随后从辛醛到正辛酸的自由基历程. Highly efficient heterogeneous one-pot oxidation from 1-octanol to octanoic acid using molecular oxygen as a sole oxidant with Ru-Co（OH）2-CeO2 catalyst was developed. XRD and XPS characterizations were used to analyze the catalyst structure influenced by aging temperature. Two species of crystallines including CeO2 and Co（OH）2 existing in this catalyst were evidenced. Ru was in high oxidation state of quadravalence and well dispersed. The synergism among Ru, Co and Ce components exhibited highly catalytic activity towards one-pot conversion from 1-octanol to octanoic acid under mild condition. Firstly β elimination from 1-octanol to octanal and later radical process from octanal to octanoic acid were plausible reaction mechanism.

关 键 词： 正辛醇 一步法氧化 反应机理

领　　域： [理学] [理学]