Tuning the surface composition of novel metal vanadates and its effect on the catalytic performance |
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Authors: | Dhachapally Naresh Kalevaru V Narayana Radnik Jörg Martin Andreas |
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Institution: | Leibniz-Institut für Katalyse e.V. an der Universit?t Rostock, Albert-Einstein-Str. 29a, D-18059 Rostock, Germany. |
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Abstract: | Tuning the surface composition of metal vanadates using different cations leads to the development of a new class of highly effective catalysts tested in the ammoxidation of 2-methylpyrazine. Especially, an enrichment of V in the near-surface region is beneficial for improved selectivity. With this approach, a knowledge based optimisation of the catalysts was possible for the first time, which indeed led to highly efficient novel LaVO(x) catalysts with a high yield of 2-cyanopyrazine (≥85%) and extremely high space-time-yields (ca. 525 g kg h(-1)). |
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