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The Origin of Molecular Mobility During Biomass Pyrolysis as Revealed by In situ 1H NMR Spectroscopy

Identifieur interne : 000886 ( Main/Exploration ); précédent : 000885; suivant : 000887

The Origin of Molecular Mobility During Biomass Pyrolysis as Revealed by In situ 1H NMR Spectroscopy

Auteurs : Anthony Dufour (génie des procédés) [France, Royaume-Uni] ; Miguel Castro-Diaz [Royaume-Uni] ; Nicolas Brosse [France] ; Mohamed Bouroukba [France] ; Colin Snape [Royaume-Uni]

Source :

RBID : ISTEX:DAF9621D2A776ED03D29BE856D164EB4A7D0181B

Descripteurs français

English descriptors

Abstract

The thermochemical conversion of lignocellulosic biomass feedstocks offers an important potential route for the production of biofuels and value‐added green chemicals. Pyrolysis is the first phenomenon involved in all biomass thermochemical processes and it controls to a major extent the product composition. The composition of pyrolysis products can be affected markedly by the extent of softening that occurs. In spite of extensive work on biomass pyrolysis, the development of fluidity during the pyrolysis of biomass has not been quantified. This paper provides the first experimental investigation of proton mobility during biomass pyrolysis by in situ 1H NMR spectroscopy. The origin of mobility is discussed for cellulose, lignin and xylan. The effect of minerals on cellulose mobility is also investigated. Interactions between polymers in the native biomass network are revealed by in situ 1H NMR analysis.

Url:
DOI: 10.1002/cssc.201100442


Affiliations:


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<div type="abstract" xml:lang="en">The thermochemical conversion of lignocellulosic biomass feedstocks offers an important potential route for the production of biofuels and value‐added green chemicals. Pyrolysis is the first phenomenon involved in all biomass thermochemical processes and it controls to a major extent the product composition. The composition of pyrolysis products can be affected markedly by the extent of softening that occurs. In spite of extensive work on biomass pyrolysis, the development of fluidity during the pyrolysis of biomass has not been quantified. This paper provides the first experimental investigation of proton mobility during biomass pyrolysis by in situ 1H NMR spectroscopy. The origin of mobility is discussed for cellulose, lignin and xylan. The effect of minerals on cellulose mobility is also investigated. Interactions between polymers in the native biomass network are revealed by in situ 1H NMR analysis.</div>
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