Selective oxidation of alcohols on P123-stabilized Au–Ag alloy nanoparticles in aqueous solution with molecular oxygen
作者:Xuemin Huang、Xueguang Wang、Mingwu Tan、Xiujing Zou、Weizhong Ding、Xionggang Lu
DOI:10.1016/j.apcata.2013.07.062
日期:2013.10
a co-reduction method in P123 aqueous solution and used for the selective oxidation of alcohols with molecular oxygen in the presence of Na2CO3 at near ambient temperature. The results demonstrated that the addition of Ag significantly enhanced the catalytic activity, and the Au0.95Ag0.05 alloy nanocatalysts possessed the highest oxidation rate for the aerobic oxidation of benzyl alcohol. The comparisons
通过共还原法在P123水溶液中制备了一系列稳定的Au 1- x Ag x(x = 0、0.01、0.02、0.05、0.10、0.15)合金纳米粒子,其可比较的粒径为3-4 nm。用于在接近环境温度的Na 2 CO 3存在下用分子氧选择性氧化醇。结果表明,Ag的加入显着增强了催化活性,Au 0.95 Ag 0.05合金纳米催化剂在有氧氧化苯甲醇中具有最高的氧化速率。在苯甲醇转化率为60%时产物选择性的比较表明,相对于苯甲酸,增加反应温度或苯甲醇浓度更有利于生产苯甲醛。在Au 0.95 Ag 0.05合金纳米催化剂上还检查了其他种类的醇的好氧氧化,显示出优异的催化活性和与醇性质密切相关的产物选择性。