论文部分内容阅读
使用一锅法成功制备了水溶性聚酰胺酸盐稳定的金纳米催化剂(AuNPs-PAAS),将该催化剂用于伯醇的催化氧化.利用紫外-可见分光光度计,X射线衍射仪(XRD),透射电子显微镜(TEM)等表征方法对催化剂进行了表征.结果表明,金纳米粒子在聚酰胺酸溶液中处于均匀分散状态,金纳米尺寸约为5 nm.将制备的纳米金催化剂用于伯醇的氧化,评价了其在伯醇氧化成羧酸反应中的催化性能,结果显示,在空气为氧化剂,水为溶剂的条件下,AuNPs-PAAS对伯醇的催化氧化为高效的准均相催化过程,高选择性得到羧酸产物,通过调节溶液的pH值,可以很容易的实现产物与反应体系分离和催化剂的回收和循环利用.
A one-pot method was used to prepare water-soluble polyamic acid salt stable gold nanocatalyst (AuNPs-PAAS), which was used for the catalytic oxidation of primary alcohols. The effects of UV- , Transmission electron microscopy (TEM) and other characterization methods were used to characterize the catalyst.The results showed that the gold nanoparticles were uniformly dispersed in the polyamic acid solution and the size of the gold nanostructures was about 5 nm.The prepared gold nanoparticle catalysts were used for the primary The results showed that the catalytic oxidation of AuNPs-PAAS to primary alcohols under the conditions of air as oxidant and water as the solvent was an efficient quasi-homogeneous phase Catalytic process, the high selectivity of carboxylic acid products, by adjusting the solution pH, the product can be easily separated with the reaction system and the catalyst recovery and recycling.