Liang, Jiajin published the artcileComprehensive insights into xylan structure evolution via multi-perspective analysis during slow pyrolysis process, Synthetic Route of 19444-84-9, the publication is Fuel Processing Technology (2019), 1-7, database is CAplus.
Comprehension in hemicellulose pyrolysis is critical to generate renewable fuel and valuable chem. Herein, a self-designed tubular reactor was applied to observe the appearance alteration and chem. structure evolution during the whole xylan pyrolysis process. Before 200°C, it was free moisture removal stage without significant chem. structure alteration. Xylan began to depolymerize at 200°C corresponding with the appearance change from its original state to dark brown, cleavage of branched-chain and primary product acids & ketones generation. The main chain of xylan was completely broken at 250-350°C via β-1,4-glycosidic bond cleavage, dehydration, decarboxylation, and decarbonylation reaction. Acids were mainly originated from hemicellulose pyrolysis. The typical signals from FTIR, 13C CP/MAS NMR were disappeared at 350°C. In the carbonation stage, the C/H and C/O ratio reached 2.01 and 4.54, leading to the aromaticity enhancement of char and formation of carbon-centered radicals.
Fuel Processing Technology published new progress about 19444-84-9. 19444-84-9 belongs to tetrahydrofurans, auxiliary class Tetrahydrofuran,Ester,Alcohol, name is 3-Hydroxydihydrofuran-2(3H)-one, and the molecular formula is C4H6O3, Synthetic Route of 19444-84-9.
Referemce:
https://en.wikipedia.org/wiki/Tetrahydrofuran,
Tetrahydrofuran | (CH2)3CH2O – PubChem