Improved catalyst formulations for the conversion of glycerol to bio-based aromatics

The catalytic conversion of glycerol to aromatics (GTA, e.g ., benzene, toluene, and xylenes, BTX) over a shaped H-ZSM-5/Al 2 O 3 (60/40 wt%) catalyst was investigated in continuous fixed-bed reactor study the addition Al binder formulation on performance. experiments were performed under N at 550 °C, WHSV (pure) 1 h ?1 , atmospheric pressure. spent catalysts reused after an oxidative regeneration 680 °C total 5 reaction-regeneration cycles performed. Catalyst characterization studies show that does not affect surface area crystallinity formulation, but increases pore volume (mesopores particular) acidity (Lewis particular). shows considerably prolonged life-time (8.5 vs . 6.5 for H-ZSM-5), resulting significant increase BTX productivity (710 556 mg g H-ZSM-5). Besides, retards irreversible deactivation. For instance, regenerations, performance is comparable fresh one. However, 4 some deactivation occurs, associated with reduction volume, crystallinity, (Brønsted particular), meso-porosity binder. This both stability reusability H-ZSM-5-based GTA are remarkably enhanced when using suitable • A applied aromatics. 28% higher compared H-ZSM-5. Reversible observed found be due coke deposition. Coke predominantly deposited rather than H-ZSM-5 pores. Irreversible regeneration-recycles.