The preparation and photocatalytic activity of Ag-Pd/g-C3N4 for the coupling reaction between benzyl alcohol and aniline
作者:Jingjing Ma、Xiujuan Yu、Xiaoling Liu、Haiying Li、Xueli Hao、Jingyi Li
DOI:10.1016/j.mcat.2019.110533
日期:2019.10
catalyst, and the amount of reactants. The optimal reaction conditions are 6 ml of n-hexane, 1.4 mmol of Cs2CO3, 50 mg of the Ag-Pd/g-C3N4 (2 wt%, 1:1), and 2:1 mol ratio of benzyl alcohol and aniline. Under optimal reaction conditions, alcohol derivatives and amine derivatives were investigated to determine the suitable range of the catalyst for alcohols and amines. Then, the effects of different light
本研究以三聚氰胺制备载体gC 3 N 4,用NaBH 4还原法合成Ag-Pd / gC 3 N 4催化剂。不同的表征技术,包括SEM,TEM,XRD,UV-vis DRS,XPS,光致发光光谱(PL)和BET,被用来研究所制备样品的形貌和光学性质。Ag-Pd / gC 3 N 4催化剂用于由苯甲醇和苯胺合成亚胺。结果表明,当Ag和Pd的总负载量为2 wt%,且Ag和Pd的质量比为1:1时,催化剂的活性最高(苯胺的最高转化率为86.7%)。选择性> 99%。)。通过改变溶剂的类型,碱的类型和数量,催化剂的类型以及反应物的数量来优化反应。最佳反应条件为6毫升正己烷,1.4毫摩尔的Cs 2 CO 3,50毫克银-钯的/ GC 3 Ñ 4(2wt%,1∶1)和2∶1摩尔比的苯甲醇和苯胺。在最佳反应条件下,对醇衍生物和胺衍生物进行了研究,以确定适合醇和胺的催化剂的范围。然后,探索了不同的光强度和波长