Catalytic conversion of pure glycerol over an un-modified H-ZSM-5 zeolite to bio-based aromatics

Ex-situ catalytic pyrolysis of pure glycerol to bio-aromatics over an un-modified H-ZSM-5 zeolite. • The conversion aromatics (BTX) with zeolite was investigated. An ex-situ approach used a separate and upgrading unit. A BTX peak carbon yield 28.1 ± 0.2% obtained. Catalyst performance for 5 reaction/regeneration cycles determined. Irreversible catalyst deactivation observed due dealumination the framework. (bio-BTX) (SiO 2 /Al O 3 molar ratio 23) via in continuous tandem-micro reactor at scale 1 g h ?1 0.2 % obtained temperature 400 °C, 500 atmospheric pressure WHSV . About 70 bound oxygen converted water. latter mainly formed unit (70 %), though other oxygenates water formation also occurs time hours is coke deposition (12.0 wt.%) on surface. oxidative regeneration procedure remove applied reaction-regeneration were performed successfully, drop activity after each cycle irreversible deactivation. Characterization fresh, deactivated regenerated catalysts by various techniques revealed framework resulted dramatic decrease Brønsted acidity catalyst. Dealumination occurred far lesser extent during regeneration. This information relevant better understanding process molecular level but scale-up studies, e.g design pilot plants.