Selective Oxidation of Aldehyde over Hydroxymethyl Group Catalyzed by Gold Nanoparticles in Aqueous Phase  

水相中金纳米颗粒催化的醛基选择性氧化（英文）

作　　者：Han-bao Chong Gui-qi Gao Guang Li 崇汉宝;高贵琪;李广(安徽大学物理与材料科学学院,合肥230601;安徽大学物质科学与信息技术研究院,合肥230601)

机构地区：[1]School of Physics and Material Science,Anhui University,Hefei 230601,China [2]Institute of Physical Science and Information Technology,Anhui University,Hefei 230601,China

出　　处：《Chinese Journal of Chemical Physics》2019年第6期747-752,I0003,I0032-I0045,共21页化学物理学报（英文）

基　　金：supported by the National Natural Science Foundation of China(No.11674001);the Ministry of Education,Anhui Provincial Natural Science Foundation(No.1708085MA07 and No.1608085QB39);Doctoral Startup Foundation of Anhui University(No.10113190077)

摘　　要：A protocol for selectively oxidizing aldehyde over hydroxymethyl group is developed, using biomass starch protected gold nanoparticles (NPs) as catalyst. The Au NPs show high selectivity that aldehyde is oxidized into carboxylic acid while alcoholic hydroxyl group stays intact in selective oxidation of 4-(hydroxymethyl)-benzaldehyde. The heterogeneous catalysis system is composed of soluble catalysts and insoluble substrate. The gold catalyst is prepared, preserved and applied for catalytic oxidation all in water. After reaction conditions are optimized, H2O2 is found to be the best oxidizing agent with complete conversion.Besides, the gold catalyst displays good versitility for aldehyde derivatives. After reaction completes, organic components are extracted by organic solvent and gold NPs in water are separated and recycled.

关 键 词：Au nanoparticle WATER-SOLUBILITY Selective oxidation STARCH 

分 类 号：O643.36[理学—物理化学] O623.61[理学—化学]