Journal
CHEMSUSCHEM
Volume 7, Issue 9, Pages 2496-2504Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201402363
Keywords
carbon; dehydrogenation; doping; nanostructures; supported catalysts
Funding
- European Commission [280658]
- Fundacion Domingo Martinez (Ayuda a la Investigacion)
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Carbon nanofibres (CNFs) were modified with B and P by an ex situ approach. In addition, CNFs doped with N were prepared in situ using ethylenediamine as the N and C source. After calcination, the doped CNFs were used as catalysts for the oxidative dehydrogenation of propane. For B-CNFs, the effects of boron loading and calcination temperature on B speciation and catalytic conversion were studied. For the same reaction temperatures and conversions, B- and P-doped CNFs exhibited higher selectivities to propene than pristine CNFs. The N-CNFs were the most active but the least selective of the catalysts tested here. Our results also show that the type of P precursor affects the selectivity to propene and that CNFs modified using triphenylphosphine as the precursor provided the highest selectivity at isoconversion.
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