Green synthesis of Ni-Nb oxide catalysts for low-temperature oxidative dehydrogenation of ethane.
ChemSusChem
; 8(7): 1254-63, 2015 Apr 13.
Article
em En
| MEDLINE
| ID: mdl-25755222
ABSTRACT
The straightforward solid-state grinding of a mixture of Ni nitrate and Nb oxalate crystals led to, after mild calcination (T<400 °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 °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 50â
h 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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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Óxidos
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Temperatura
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Etano
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Níquel
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Nióbio
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article