Abstract
PdO/Al2O3 catalysts prepared by glow discharge plasma treatment followed by thermal calcination show a much higher dispersion and a better catalytic activity for methane combustion at relatively low temperatures. The dispersion of palladium active species by such plasma prepared catalysts is 29.7%, 5.4 times higher than that of conventional catalysts. XPS analysis indicates that a surface enrichment of Pd active species (PdO) has been achieved after plasma treatment. The surface atomic composition of PdO of plasma prepared catalysts reaches 10.5%. XRD characterization also confirms a well‐crystallized PdO phase present on the plasma prepared catalyst. The light‐off temperature of the plasma prepared catalyst is 370°C, 50°C lower than that obtained from the conventional catalyst.
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Yu, K., Liu, C., Zhang, Y. et al. The Preparation and Characterization of Highly Dispersed PdO over Alumina for Low‐temperature Combustion of Methane. Plasma Chem Plasma Process 24, 393–403 (2004). https://doi.org/10.1007/s11090-004-2275-z
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DOI: https://doi.org/10.1007/s11090-004-2275-z