Abstract
The catalytic performance of multi-walled carbon nanotubes (MWCNTs) modified by iron oxide has been investigated for oxidative dehydrogenation of ethylbenzene in an integral fixed-bed reactor conventionally-heated and under microwave-assisted conditions. The morphology and microstructural characteristics of the obtained composites before and after the catalytic reaction were characterized by transmission electron microscopy and X-ray diffraction. The content 3wt.% of iron oxide supported on MWCNTs was found optimal in respect of the ethylbenzene conversion and styrene selectivity. All prepared composites were found more selective in a microwave field in the temperature range 380–450 °C. The transformation of Fe 2O 3 into Fe nanocrystals encapsulated by polyhedral graphite shells was observed only under microwave-assisted reaction conditions.
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