3-10-2 糖の熱分解機構:気相でなぜ安定化するのか(3-10 炭化・熱分解,Session 3 バイオマス等)

概要

論文の詳細を見る
Levoglucosan (1,6-anhydro-β-D-glucopyranose) is a major initial product formed during primary pyrolysis of cellulose. Thus, the secondary reactions behavior of levoglucosan is quite important to understand and control the reactions occurring during thermochemical conversion of cellulosic biomass such as gasification and fast pyrolysis processes. We have reported that levoglucosan is stabilized in the gas phase against polymerization (transglycosylation) and dehydration into furans and char, which are the characteristic reactions for primary pyrolysis of sugar and its derivatives. This presentation proposes the stabilization mechanism, which is originated from the inhibition of the proton-donation to the oxygen atoms of levoglucosan through hydrogen bonding formed between levoglucosan molecules. Such hydrogen bondings are not effective in the gas-phase pyrolysis. This proposed mechanism will give suggestions in developing the controlled gasification and pyrolysis processes.
2012-07-30