Journal
CHEMSUSCHEM
Volume 8, Issue 7, Pages 1254-1263Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201403181
Keywords
doping; heterogeneous catalysis; niobium; oxidative dehydrogenation; solid-phase synthesis
Funding
- Dow Chemical Company
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The straightforward solid-state grinding of a mixture of Ni nitrate and Nb oxalate crystals led to, after mild calcination (T<400 degrees C), nanostructured Ni-Nb oxide composites. These new materials efficiently catalyzed the oxidative dehydrogenation (ODH) of ethane to ethylene at a relatively low temperature (T<300 degrees C). These catalysts appear to be much more stable than the corresponding composites prepared by other chemical methods; more than 90% of their original intrinsic activity was retained after 50h with time on-stream. Furthermore, the stability was much less affected by the Nb content than in composites prepared by classical wet syntheses. These materials, obtained in a solvent-free way, are thus promising green and sustainable alternatives to the current Ni-Nb candidates for the low-temperature ODH of ethane.
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