Scholarlink

<p>The oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) faces challenges of low efficiency and poor stability when non-noble metal catalysts are used. Herein, a Cu-Ni bimetallic catalyst (Cu<sub>67</sub>Ni<sub>22</sub>O<sub>x</sub>) was designed, and its oxygen vacancy (O<sub>V</sub>) formation and adsorption-oxidation capacity was systematically investigated via scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR), among other techniques. Structural characterizations showed that the (Cu<sub>67</sub>Ni<sub>22</sub>O<sub>x</sub> catalyst combined amorphous nickel oxide and crystalline copper oxide. Amorphous Ni enhanced surface hydroxylation (13.2%) to promote the adsorption for HMF, while the catalyst’s high O<sub>V</sub> concentration (56.2%) facilitated active oxygen transfer. Additionally, the Cu-Ni heterointerface of (Cu<sub>67</sub>Ni<sub>22</sub>O<sub>x</sub> effectively suppressed particle agglomeration to a certain extent, as evidenced by cycling tests showing over 80% activity retention after 5 cycles. Under optimized conditions, the FDCA yield reached 93.46% within 12&#xa0;h at 140&#xa0;°C. This catalyst offers a promising candidate for the sustainable synthesis of FDCA.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Substrate Adsorption and Oxidation Synergistic Effect in Cu-Ni Bimetallic Catalyst for 5-Hydroxymethylfurfural Oxidation

  • 期刊论文

  • 发表日期：

    2025年10月30日

查看全文
  • Liyan Xing,
  • Jian Jin,
  • Ming Xu,
  • Hairong Bai,
  • Zhiyong Li

摘要

The oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) faces challenges of low efficiency and poor stability when non-noble metal catalysts are used. Herein, a Cu-Ni bimetallic catalyst (Cu67Ni22Ox) was designed, and its oxygen vacancy (OV) formation and adsorption-oxidation capacity was systematically investigated via scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR), among other techniques. Structural characterizations showed that the (Cu67Ni22Ox catalyst combined amorphous nickel oxide and crystalline copper oxide. Amorphous Ni enhanced surface hydroxylation (13.2%) to promote the adsorption for HMF, while the catalyst’s high OV concentration (56.2%) facilitated active oxygen transfer. Additionally, the Cu-Ni heterointerface of (Cu67Ni22Ox effectively suppressed particle agglomeration to a certain extent, as evidenced by cycling tests showing over 80% activity retention after 5 cycles. Under optimized conditions, the FDCA yield reached 93.46% within 12 h at 140 °C. This catalyst offers a promising candidate for the sustainable synthesis of FDCA.

Graphical Abstract