4451-31-4Relevant academic research and scientific papers
Revealing the chemistry of biomass pyrolysis by means of tunable synchrotron photoionisation-mass spectrometry
Dufour, Anthony,Weng, Junjie,Jia, Liangyuan,Tang, Xiaofeng,Sirjean, Baptiste,Fournet, Rene,Gall, Herve Le,Brosse, Nicolas,Billaud, Francis,Mauviel, Guillain,Qi, Fei
, p. 4786 - 4792 (2013/05/09)
Imaging biomass conversion: pyrolysis is the first reaction involved in all thermal processes for biofuels and green chemicals production. Synchrotron light ionisation and mass spectrometry is used for the first time to investigate biomass pyrolysis. The soft and tunable ionisation source coupled with ab initio calculations reveals chemical mechanisms and new major intermediate species. This methodology could be extended to the thermal and catalytic conversion of all other materials. Primary volatile products are analysed online as a function of photon energy, biomass composition (cellulose, xylan, lignin), reactor temperature and time of conversion. Hydroxyacetaldehyde was detected at very minor yields for cellulose pyrolysis confirming that it is a secondary product. The effect of cellulose structure and ash content on primary tar formation was also studied. The mechanism of levoglucosan dissociative photoionisation is depicted. A new major intermediate product which could be a precursor of furanone-based species from cellulose is evidenced thanks to the soft ionisation and MSMS structural analysis of ions. Different lignin markers and evolutions upon time of conversion are shown for miscanthus and oak pyrolysis.
A NOVEL HYDROXYLACTONE FROM THE LEWIS ACID CATALYSED PYROLYSIS OF CELLULOSE
Furneaux, Richard H.,Mason, Jennifer M.,Miller, Ian J.
, p. 49 - 52 (2007/10/02)
The novel δ-lactone (1) of (3R,5S)-3-hydroxy-5-hydroxymethyltetrahydrofuran-3-carboxylic acid (2) has been isolated from tar produced by pyrolysis of cellulose doped with zinc chloride.Using Curie-point pyrolysis-g.l.c. analysis, the lactone was shown to be a significant product of the pyrolysis of cellulose in the presence of a vide variety of other Lewis acids, but not in the presence of protic acids or copper(II)chloride.The lactone (1) was readily hydrolysed to the acid (2) and yielded the methyl ester (3) on methanolysis.
