The Origin of Molecular Mobility During Biomass Pyrolysis as Revealed by In situ 1H NMR Spectroscopy
Identifieur interne : 000207 ( Istex/Curation ); précédent : 000206; suivant : 000208The Origin of Molecular Mobility During Biomass Pyrolysis as Revealed by In situ 1H NMR Spectroscopy
Auteurs : Anthony Dufour [France, Royaume-Uni] ; Miguel Castro-Diaz [Royaume-Uni] ; Nicolas Brosse [France] ; Mohamed Bouroukba [France] ; Colin Snape [Royaume-Uni]Source :
- ChemSusChem [ 1864-5631 ] ; 2012-07.
Descripteurs français
English descriptors
- KwdEn :
- Anal, Angew, Appl, Biomass, Biomass pyrolysis, Cellulose, Cellulose pyrolysis, Chem, Chemsuschem, Energy fuels, Extraction procedure, First time, Fluidity, Fluidity development, Glass transition phase, Gmbh, Heating rate, Holocelluloses, Kgaa, Lignin, Lorentzian, Lower temperature, Mass loss, Maximum fluidity, Maximum mass loss rate, Maximum weight loss, Microgranular cellulose, Miscanthus, Miscanthus cellulose, Mobile hydrogen fraction, Mobile phase, Mobility, Mobility development, Molecular mobility, Native biomass network, Native miscanthus, Native network, Polym, Polymer, Proton, Pyrolysis, Pyrolysis products, Relaxation time, Snape, Synthetic blend, Thermogravimetric analysis, Verlag, Verlag gmbh, Weinheim, Weinheim chemsuschem, Xylan, Xylan pyrolysis.
- Teeft :
- Anal, Angew, Appl, Biomass, Biomass pyrolysis, Cellulose, Cellulose pyrolysis, Chem, Chemsuschem, Energy fuels, Extraction procedure, First time, Fluidity, Fluidity development, Glass transition phase, Gmbh, Heating rate, Holocelluloses, Kgaa, Lignin, Lorentzian, Lower temperature, Mass loss, Maximum fluidity, Maximum mass loss rate, Maximum weight loss, Microgranular cellulose, Miscanthus, Miscanthus cellulose, Mobile hydrogen fraction, Mobile phase, Mobility, Mobility development, Molecular mobility, Native biomass network, Native miscanthus, Native network, Polym, Polymer, Proton, Pyrolysis, Pyrolysis products, Relaxation time, Snape, Synthetic blend, Thermogravimetric analysis, Verlag, Verlag gmbh, Weinheim, Weinheim chemsuschem, Xylan, Xylan pyrolysis.
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
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<term>Biomass pyrolysis</term>
<term>Cellulose</term>
<term>Cellulose pyrolysis</term>
<term>Chem</term>
<term>Chemsuschem</term>
<term>Energy fuels</term>
<term>Extraction procedure</term>
<term>First time</term>
<term>Fluidity</term>
<term>Fluidity development</term>
<term>Glass transition phase</term>
<term>Gmbh</term>
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<term>Holocelluloses</term>
<term>Kgaa</term>
<term>Lignin</term>
<term>Lorentzian</term>
<term>Lower temperature</term>
<term>Mass loss</term>
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<term>Maximum mass loss rate</term>
<term>Maximum weight loss</term>
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<term>Miscanthus</term>
<term>Miscanthus cellulose</term>
<term>Mobile hydrogen fraction</term>
<term>Mobile phase</term>
<term>Mobility</term>
<term>Mobility development</term>
<term>Molecular mobility</term>
<term>Native biomass network</term>
<term>Native miscanthus</term>
<term>Native network</term>
<term>Polym</term>
<term>Polymer</term>
<term>Proton</term>
<term>Pyrolysis</term>
<term>Pyrolysis products</term>
<term>Relaxation time</term>
<term>Snape</term>
<term>Synthetic blend</term>
<term>Thermogravimetric analysis</term>
<term>Verlag</term>
<term>Verlag gmbh</term>
<term>Weinheim</term>
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<term>Xylan</term>
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<term>Cellulose pyrolysis</term>
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<term>Chemsuschem</term>
<term>Energy fuels</term>
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<term>First time</term>
<term>Fluidity</term>
<term>Fluidity development</term>
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<term>Heating rate</term>
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<term>Kgaa</term>
<term>Lignin</term>
<term>Lorentzian</term>
<term>Lower temperature</term>
<term>Mass loss</term>
<term>Maximum fluidity</term>
<term>Maximum mass loss rate</term>
<term>Maximum weight loss</term>
<term>Microgranular cellulose</term>
<term>Miscanthus</term>
<term>Miscanthus cellulose</term>
<term>Mobile hydrogen fraction</term>
<term>Mobile phase</term>
<term>Mobility</term>
<term>Mobility development</term>
<term>Molecular mobility</term>
<term>Native biomass network</term>
<term>Native miscanthus</term>
<term>Native network</term>
<term>Polym</term>
<term>Polymer</term>
<term>Proton</term>
<term>Pyrolysis</term>
<term>Pyrolysis products</term>
<term>Relaxation time</term>
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<front><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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