The role of carbon supports in platinum catalyzed hydrogenation/ dehydrogenation model reactions
Doctoral thesis
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http://hdl.handle.net/11250/1912433Utgivelsesdato
2015Metadata
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giving a higher turnover frequency, the propane dehydrogenation reaction over
Pt supported on carbon black was less susceptible to deactivation in experiments
without co-fed hydrogen, indicating that the carbon black support either reduces
the rate of coke formation or the toxicity of the coke formed.
This high conversion observed for Pt supported on carbon black when used for
propane dehydrogenation has not been observed when structure insensitive
ethene hydrogenation was used as a model reaction, confirming that the high
conversion and longer lifetime compared to other tested catalysts was not caused
by a higher dispersion. It is suggested that other effects, such as metal-support
interaction, can play an important role in influencing the properties of carbonsupported
catalysts.