Gold nanocatalysts have been reported to be active in the selective hydrogenation of acetylene. In this paper, a series of Au/Ce_1−xZr_xO₂ (x = 0.03 to 0.5) supported catalysts with different ratios of Ce to Zr were prepared and their catalytic performance for selective hydrogenation of acetylene was investigated. The structure and surface defects of the catalyst can be changed by altering the amount of Zr incorporation. Compared to both Au/CeO₂ and Au/ZrO₂, the synthesized Au/Ce_1−xZr_xO₂ showed the higher catalytic activity with keeping almost 100% ethylene selectivity at 300 °C. The TEM observation indicated that the incorporation of Zr led to the formation of hollow spherical solid solutions. The specific surface area also has a certain influence on the catalytic activity. Considering the catalytic activity of Au/Ce_1−xZr_xO₂ and their characterizations by XPS and Raman, the concentration of Ce⁴⁺ and the oxygen vacancy of the Ce_1−xZr_xO₂ support play an important role in the selective hydrogenation of acetylene.

据报道，金纳米催化剂在乙炔的选择性加氢中具有活性。本文制备了一系列不同Ce / Zr比的Au / Ce _1-x Zr _x O ₂（x = 0.03至0.5）负载型催化剂，并研究了它们对乙炔选择性加氢的催化性能。可以通过改变Zr的掺入量来改变催化剂的结构和表面缺陷。与Au / CeO ₂和Au / ZrO _2相比，合成的Au / Ce _1-x Zr _x O ₂显示出较高的催化活性，并在300°C下保持了几乎100％的乙烯选择性。TEM观察表明，Zr的掺入导致中空球形固溶体的形成。比表面积对催化活性也有一定影响。考虑到Au / Ce _1-x Zr _x O ₂的催化活性及其XPS和Raman表征，Ce ⁴⁺的浓度和Ce _1-x Zr _x O ₂载体的氧空位在其中起着重要作用。乙炔的选择性加氢。