Gold Nanoparticles Supported on Ce–Zr Oxides for Selective Hydrogenation of Acetylene

• Published in: Topics in catalysis Vol. 64; no. 3-4; pp. 206 - 214
• Main Authors: Hua, Xiaoyue, Zheng, Yuhua, Yang, Zixuan, Sun, Libo, Su, Huijuan, Murayama, Toru, Qi, Caixia
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.03.2021; Springer Nature B.V
• Subjects: Acetylene; Catalysis; Catalysts; Catalytic activity; Cerium oxides; Characterization and Evaluation of Materials; Chemical products; Chemistry; Chemistry and Materials Science; Gold; Hydrogenation; Industrial Chemistry/Chemical Engineering; Nanoparticles; Original Paper; Pharmacy; Physical Chemistry; Selectivity; Solid solutions; Surface defects; X ray photoelectron spectroscopy; Zirconium dioxide; Zirconium oxides; Selective hydrogenation of acetylene; Ce; Au catalysts; solid solution; Zr; O; Oxygen vacancy
• ISSN: 1022-5528; 1572-9028
• DOI: 10.1007/s11244-020-01379-9

Gold nanocatalysts have been reported to be active in the selective hydrogenation of acetylene. In this paper, a series of Au/Ce 1−x Zr x O 2 (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/CeO 2 and Au/ZrO 2 , the synthesized Au/Ce 1−x Zr x O 2 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−x Zr x O 2 and their characterizations by XPS and Raman, the concentration of Ce 4+ and the oxygen vacancy of the Ce 1−x Zr x O 2 support play an important role in the selective hydrogenation of acetylene.