羊毛-Pd（0）催化剂的制备、表征及其在水相中对醇的催化氧化反应
羊毛-Pd（0）催化剂的制备、表征及其在水相中对醇的催化氧化反应
复制标题
DOI：
10.3724/sp.j.1088.2012.20442
复制
发表时间：
2012-08
期刊：
影响因子：
5.2
通讯作者：
Zhikang Bao;Yuan Ma;Hengchang Ma;Wang Feng;Ziru Lei;Cao Wei;Zhiwang Yang
中科院分区：
文献类型：
--
作者：
Zhikang Bao;Yuan Ma;Hengchang Ma;Wang Feng;Ziru Lei;Cao Wei;Zhiwang Yang
以天然生物高聚物羊毛为稳定剂和载体，成功制备了羊毛pd(0)催化剂。采用场发射扫描电镜和x射线光电子能谱对钯催化剂的结构进行了表征，结果表明钯(0)颗粒在羊毛表面分散良好。在优化条件下，将羊毛钯(0)催化剂应用于醇氧化反应，筛选出催化剂用量、碱、反应温度、反应时间等参数。结果表明，在0.2 mmol k2 CO 3存在下，以水为反应介质，35 mg羊毛pd(0)催化剂可将0.2 mmol醇氧化为相应的醛或酮，转化率和选择性较高。多相催化剂在该反应体系中具有良好的重复使用性。
Wool-Pd(0) catalyst was prepared successfully using nature biopolymer wool as stabilizer and supporter. The structure of the palladium catalyst was characterized by field emission scanning electron microscopy and X-ray photoelectron spectroscopy, and the results showed that Pd(0) particles are well dispersed on the surface of wool. Applying wool-Pd(0) catalyst in the oxidation of alcohol under optimized conditions, several parameters such as catalyst amount, base, reaction temperature, and reaction time were screened. It was found that 35 mg wool-Pd(0) catalyst is available for the oxidation of 0.2 mmol alcohol to corresponding aldehyde or ketone with higher conversion and selectivity in the presence of 0.2 mmol K 2 CO 3 and using water as reaction medium. The heterogeneous catalyst is of good reusability in this reaction system.