Abstract
The Co3O4 and Ag/Co3O4 catalysts with varying content of Ag were fabricated via sol–gel citrate procedure, which were used for propane total oxidation. First, Ag+ and/or Co2+ ions coordinate with citric acid to form silver and/or cobalt citrate complex, then calcined to produce Ag/Co3O4 catalysts. Among all the catalysts, the 6%Ag/Co3O4 sample exhibited a much higher catalytic performance, with 90% conversion of propane at only 228 °C, which was 24 °C lower than that of pure Co3O4 catalyst. Characterization results showed that the introduction of Ag decreased the particle size of Co3O4, increased the Co3+/(Co3++Co2+) ratio and surface adsorption oxygen content, and enhanced the low-temperature reducibility, which resulted in the outstanding catalytic performance.
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Acknowledgements
This work was supported by Sichuan Science and Technology Program (Nos: 18ZDYF2095), the Project of CAS “Light of West China” Program, 2015, and the Talent Project of Sichuan Provincial Party Committee Organization Department.
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Cheng, L., Liu, Z., Yuan, S. et al. Sol–gel citrate procedure to synthesize Ag/Co3O4 catalysts with enhanced activity for propane catalytic combustion . Chem. Pap. 74, 1449–1457 (2020). https://doi.org/10.1007/s11696-019-00994-5
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DOI: https://doi.org/10.1007/s11696-019-00994-5