Identification of Pd3+ ions in zeolite L by temperature programmed reduction and electron paramagnetic resonance spectroscopy |
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| Authors: | Sanjay N. Gandhi Guan -Dao Lei Wolfgang M. H. Sachtler |
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| Affiliation: | (1) V.N. Ipatieff Laboratory, Center for Catalysis and Surface Science, Northwestern University, 60208 Evanston, IL, USA |
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| Abstract: | Pd supported on KL zeolite has been studied by temperature programmed reduction (TPR) and electron paramagnetic resonance (EPR) spectroscopy. It has been found that upon calcination in pure oxygen Pd3+ and Pd2+ ions are formed; the Pd3+ ions are identified by their EPR signal. As Pd3+ ions in the cancrinite cages are difficult to reduce, the H2 consumption in conventional TPR is below the stoichiometric amount. |
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| Keywords: | Pd3+ in zeolite L EPR of Pd3+ TPR of Pd/L |
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