Characterisation of oligomers and sugar ring-cleavage products in the pyrolysate of cellulose

Laboratory simulations of the transformation of peas as a result of heating: the change of the molecular composition by DTMS

“…1). These products point to, respectively, a transglycosidation and a (2+2+2) cycloreversion mechanism [18]. Both mechanisms are operating at the same time and will reduce the initial polymer size by in-chain cleavages.…”

“…These two series, with a relative low intensity, i.e. m/z 222, 384, 546, 708 and m/z 240, 402, 564, 726, 888 represent series of oligosaccharides with attached ring-cleavage fragments [18].…”

Characterization of Water-Soluble Intermediates and Solid Residues from Fast Pyrolysis of Cellulose in a Wire-Mesh Reactor

“…Lomax and co-workers (1991) identified two products derived from the reverse aldolization reaction of the sugar ring to produce glycolaldehyde from the Curie-point pyrolysis of cellulose, and the simplest structure had a relative molecular weight of 222. The compound with a molecular weight of 222 that was detected in this study may have been the product reported by Lomax et al (1991). Reverse aldolization fragmentation with higher DP was not detected in this study.…”

Thermochemical Processing of Biomass

“…The various polymers present in biomass depolymerize to short chains of some 200 sugar units (Lomax et al 1991). Lignin and hemicelluloses and the amorphous segments of cellulose decompose preferentially.…”