The modifications of support for the dispersion and immobilization of gold nanoparticles were examined for the selective hydrogenation of acetylene to ethylene. The catalyst, denoted as Au/CNA, was prepared by the carbonization of C and N atom-containing organic precursors on Al₂O₃, which were subsequently used as supports for gold nanoparticles. The TOF value of Au/CNA was five times higher than that of Au/Al₂O₃ at 250 °C. The carbonization modification of Al₂O₃ support without N species showed almost no change in catalytic activity. Therefore, the improved catalytic performance of Au/CNA is related to the interactions of the N species on the CNA support with nano-gold particles. From the XPS analysis, electron transfer between gold and C, N co-doped species may play an important role in the high levels of Au active site utilization. This study may provide new avenues for the construction of organic/inorganic composite materials for efficient catalytic hydrogenation applications.

检查了用于分散和固定金纳米颗粒的载体的改性，以将乙炔选择性氢化为乙烯。通过在Al ₂ O ₃上碳化含C和N原子的有机前体，制备了称为Au / CNA的催化剂，随后将其用作金纳米颗粒的载体。在250°C时，Au / CNA的TOF值是Au / Al ₂ O ₃的TOF值的五倍。Al ₂ O ₃的碳化改性没有N物种的载体几乎没有催化活性的变化。因此，Au / CNA催化性能的提高与CNA载体上的N物种与纳米金颗粒的相互作用有关。根据XPS分析，金与C，N共掺杂物种之间的电子转移可能在高水平的Au活性位点利用率中起重要作用。这项研究可能为有效催化加氢应用的有机/无机复合材料的构建提供新途径。