Catalytic and catalytic free process for cellulose conversion: fast pyrolysis and microwave induced pyrolysis studies

NIEVA, MARÍA LUZ; VOLPE, MARÍA ALICIA; MOYANO, ELIZABETH LAURA

SPRINGER

Lugar: Berlin; Año: 2014 vol. 22 p. 215 - 215

he catalytic and non-catalytic pyrolysis of microcrystalline cellulose and phosphoric acid pretreated cellulose was investigated. The thermal processeswere carried out applying two different methodologies: conventional fast pyrolysis and microwave-induced pyrolysis. For the catalytic experimentsdifferent catalysts were evaluated: CeO2, Nb2O5, SiO2, high surface area SiO2, Si-MCM-48 and Al-Fe-MCM-48. In all cases the liquid fraction was evaluated byquantifying the yields of anhydrosugars (mainly levoglucosan,levoglucosenone and 1,4:3,6-dianhydro-a-Dglucopyranose) and aromatic hydrocarbons. In the reaction of microcrystalline cellulose levoglucosanwas the main product, while levoglucosenone was predominant in the pyrolysis of phosphoric acid pretreated cellulose. Catalysts improved the fraction ofbio-oil and the product distribution depended on the nature of catalytic materials as well as the starting cellulose. On the other hand, the microwave induced pyrolysis favored the formation of