糠醛
呋喃
纳米颗粒
催化作用
羟甲基
产量(工程)
安贝莱特
合金
核化学
离子交换
化学
离子交换树脂
水溶液
材料科学
无机化学
高分子化学
有机化学
离子
冶金
纳米技术
吸附
作者
Churchil A. Antonyraj,Nhan Thanh Thien Huynh,Seok Kyu Park,Seunghan Shin,Yong Jin Kim,Sang Yong Kim,Kwan Young Lee,Jin Ku Cho
标识
DOI:10.1016/j.apcata.2017.09.012
摘要
Au-Pd alloy nanoparticles supported on basic anion-exchange resin (AER) have exceptional catalytic activity for the oxidation of 5-hydroxymethyl-2-furfural (HMF) into 2,5-furan dicarboxylic acid (FDCA) with an equimolar amount of base. SEM-EDX and TEM analyses show that 5–20 nm Au-Pd alloy nanoparticles are well dispersed both on the resin surface and inside resin spheres by a simple procedure without any assistance of additives. XPS analysis reveals that Au- and Pd metals exist in an alloy form on the AER support, which is confirmed by a comparison study with a mixture of AER-supported monometallic nanoparticles (AER-supported Au and AER-supported Pd). In the presence of a 1:1 ratio of Au-Pd alloy nanoparticles over Amberlite IRA-743 resin with O2 (10 bar) at 373 K in an equimolar Na2CO3 aqueous solution, HMF is oxidized to FDCA with a 93.2% yield. On the other hand, mixture of AER-supported Au and AER-supported Pd affords only a 52% FDCA yield under identical conditions. This catalyst can be used 6 times without any significant loss of activity. FDCA is also obtained from HMF with an 82.9% yield in air (40 bar).
科研通智能强力驱动
Strongly Powered by AbleSci AI