(191f) Conversion of Propylene and Propanal On HZSM-5 | AIChE

(191f) Conversion of Propylene and Propanal On HZSM-5

Authors 

Zhu, X. - Presenter, the University of Oklahoma
Resasco, D. E. - Presenter, University of Oklahoma


Propanal is representative of a number of small reactive oxygenates derived from thermal processing of biomass. Its reactivity has been studied on HSZM-5 with a Si/Al of 45 and compared to the reactions of propylene. Propanal is found to be much more reactive and to initially form mostly 2-methyl-2-pentenal and the C9 aromatic. Propylene, in contrast, initially forms C6 and C7 aromatics, in agreement with the literature. It is proposed that 2-methyl-2-pentenal is formed by aldol condensation and the C9 aromatic is from the dehydration of the aldol trimer, in addition to the aromatization of olefins via the hydrocarbon pool. Propanal also dehydrates to form propylene, but this appears to be an inert product at milder condition.

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