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Basic anion-exchange resin (AER)-supported Au-Pd alloy nanoparticles for the oxidation of 5-hydroxymethyl-2-furfural (HMF) into 2,5-furan dicarboxylic acid (FDCA)
Applied Catalysis A: General ( IF 5.5 ) Pub Date : 2017-09-09 , DOI: 10.1016/j.apcata.2017.09.012
Churchil A. Antonyraj , Nhan Thanh Thien Huynh , Seok-Kyu Park , Seunghan Shin , Yong Jin Kim , Sangyong Kim , Kwan-Young Lee , Jin Ku Cho

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).



中文翻译:

碱性阴离子交换树脂(AER)负载的Au-Pd合金纳米颗粒,用于将5-羟甲基-2-糠醛(HMF)氧化为2,5-呋喃二羧酸(FDCA)

负载在碱性阴离子交换树脂(AER)上的Au-Pd合金纳米颗粒具有出色的催化活性,可将等摩尔量的碱将5-羟甲基-2-糠醛(HMF)氧化为2,5-呋喃二羧酸(FDCA) 。SEM-EDX和TEM分析表明,无需任何添加剂即可通过简单的程序将5–20 nm的Au-Pd合金纳米颗粒很好地分散在树脂表面和内部。XPS分析显示,在AER载体上,Au和Pd金属以合金形式存在,这是通过与AER负载的单金属纳米粒子(AER负载的Au和AER负载的Pd)的混合物进行的比较研究证实的。在等摩尔Na 2中,在373 K下存在1:1比率的Au-Pd合金纳米粒子与Amberlite IRA-743树脂和O 2(10 bar)的情况将CO 3水溶液HMF氧化为FDCA,产率为93.2%。另一方面,在相同条件下,AER负载的Au和AER负载的Pd的混合物仅提供52%的FDCA收率。该催化剂可以使用6次而没有任何明显的活性损失。FDCA也是从HMF获得的,在空气(40 bar)中的产率为82.9%。

更新日期:2017-09-09
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