Strong rhodium–niobia interaction in Rh/Nb2O5, Nb2O5–Rh/SiO2 and RhNbO4/SiO2 catalysts: Application to selective CO oxidation and CO hydrogenation |
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| Authors: | Shin-Ichi Ito Tatsushi Fujimori Ken Nagashima Koichi Yuzaki Kimio Kunimori |
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| Affiliation: | Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan |
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| Abstract: | The extent of Rh–niobia interaction in niobia-supported Rh (Rh/Nb2O5), niobia-promoted Rh/SiO2 (Nb2O5–Rh/SiO2) and RhNbO4/SiO2 catalyst after H2 reduction has been investigated by H2 and CO chemisorption measurements. These catalysts have been applied to selective CO oxidation in H2 (CO+H2+O2) and CO hydrogenation (CO+H2), and the results are compared with those of unpromoted Rh/SiO2 catalysts. It has been found that niobia (NbOx) increases the activity and selectivity for both the reactions. |
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| Keywords: | Rh–niobia interaction SMSI SMOI CO oxidation CO hydrogenation |
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