Abstract
During reduction in dihydrogen at 873 K, a silica-supported palladium catalyst is initially converted to Pd4Si which further reacts with silicon-containing species to a Pd3Si phase. Such a stepwise phase change suggests that the mechanism of Pd silicide formation involves incorporation of silicon into a palladium phase, not vice versa, as was suggested in our previous work. This transformation has a great effect on catalytic properties of Pd–silica-containing systems in 2,2-dimethylpropane hydroconversion.
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Juszczyk, W., Łomot, D., Pielaszek, J. et al. Transformation of Pd/SiO2 Catalysts During High Temperature Reduction. Catalysis Letters 78, 95–98 (2002). https://doi.org/10.1023/A:1014962122813
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DOI: https://doi.org/10.1023/A:1014962122813