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Zinc-modified, γ-Al 2 O 3 supported vanadium oxides were prepared by dry impregnation and co-precipitation methods. The solids were characterized by X-ray diffraction, UV-VIS, 51 V NMR and X-ray photoelectron spectroscopy and compared as catalysts in propane oxidative dehydrogenation (ODH). It was shown that only true co-precipitation methods lead to interaction of amorphous...
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