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Construction of CuO-ZnO-Al2O3/CeO2 catalyst via the shape effect for methanol steam reforming

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  • Liao, Moyu
  • Xiang, Ruofei
  • Tan, Xinyu
  • Dai, Zhongxu
  • Qin, Hang
  • Xiao, Hanning

Abstract

CuO-ZnO-Al2O3/CeO2 catalysts based on CeO2 nanocubes (CeO2-NC), nanopolyhedrons (CeO2-NP), and nanorods (CeO2-NR) were synthesized by hydrothermal and incipient impregnation methods, and their catalytic performance in methanol steam reforming was tested. The correlation between the activity data and the physicochemical properties of the catalysts indicated that the micromorphology of the CeO2 support significantly influenced the catalytic performance. The excellent reactivity of CuO-ZnO-Al2O3/CeO2-NR with 100 % methanol conversion rate at 280 °C was attributed to the small particles with large specific surface area, abundant oxygen vacancies and chemisorbed oxygen, superior reducibility and strong methanol adsorption capacity. Meanwhile, the strong interaction between CuO-ZnO-Al2O3 and CeO2-NR greatly improved the catalytic efficiency. Besides, CuO-ZnO-Al2O3/CeO2-NR showed the lowest CO selectivity of 0.41–1.86 % in the range of 230–280 °C and a stability of over 40 h at 280 °C, demonstrating its potential as an excellent catalyst for methanol steam reforming.

Suggested Citation

  • Liao, Moyu & Xiang, Ruofei & Tan, Xinyu & Dai, Zhongxu & Qin, Hang & Xiao, Hanning, 2025. "Construction of CuO-ZnO-Al2O3/CeO2 catalyst via the shape effect for methanol steam reforming," Renewable Energy, Elsevier, vol. 247(C).
    • Handle: RePEc:eee:renene:v:247:y:2025:i:c:s0960148125007165
    DOI: 10.1016/j.renene.2025.123054
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