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Dynamics of hydrogen loss and structural changes in pyrolyzing biomass utilizing neutron imaging

Ossler, Frederik LU ; Finney, Charles E.A. ; Warren, Jeffrey M. ; Bilheux, Jean Christophe ; Zhang, Yuxuan ; Mills, Rebecca A. ; Santodonato, Louis J. and Bilheux, Hassina Z. (2021) In Carbon 176. p.511-529
Abstract

We present results from neutron-imaging studies of slow, vacuum pyrolysis of beech, poplar and conifer wood, and pelletized biomass from room temperature up to 1000 °C. A detailed and quantitative method to extract 2D (in situ neutron radiography, NR) and 3D (ex situ neutron computed tomography, NCT) information on structural transformation and elemental hydrogen content has been developed. NCT and X-ray tomography (XCT) experiments on a carbonized beech twig permitted comparison of the spatial distribution of hydrogen, better sensed by NCT, and carbon, oxygen, and heavier elements, better sensed by XCT. We have developed a methodology to directly compare structure and hydrogen-loss dynamics measured using neutron imaging with... (More)

We present results from neutron-imaging studies of slow, vacuum pyrolysis of beech, poplar and conifer wood, and pelletized biomass from room temperature up to 1000 °C. A detailed and quantitative method to extract 2D (in situ neutron radiography, NR) and 3D (ex situ neutron computed tomography, NCT) information on structural transformation and elemental hydrogen content has been developed. NCT and X-ray tomography (XCT) experiments on a carbonized beech twig permitted comparison of the spatial distribution of hydrogen, better sensed by NCT, and carbon, oxygen, and heavier elements, better sensed by XCT. We have developed a methodology to directly compare structure and hydrogen-loss dynamics measured using neutron imaging with thermogravimetric analysis and differential thermogravimetry and thus can better understand the correlations between hydrogen and carbon release dynamics. While the methodology has been developed for the carbonization of biomass, we expect that it could be applied to in situ dynamic monitoring of other hydrogenous reacting systems with the appropriate spatial and temporal scales.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Biomass pyrolysis, Carbonization, Hydrogen loss dynamics, Neutron imaging, Structural dynamics, Thermogravimetry
in
Carbon
volume
176
pages
19 pages
publisher
Elsevier
external identifiers
  • scopus:85101307839
ISSN
0008-6223
DOI
10.1016/j.carbon.2020.11.060
language
English
LU publication?
yes
id
56322fbf-7d80-46b4-b713-c86b8bb437e4
date added to LUP
2021-03-08 12:19:28
date last changed
2022-04-27 00:38:07
@article{56322fbf-7d80-46b4-b713-c86b8bb437e4,
  abstract     = {{<p>We present results from neutron-imaging studies of slow, vacuum pyrolysis of beech, poplar and conifer wood, and pelletized biomass from room temperature up to 1000 °C. A detailed and quantitative method to extract 2D (in situ neutron radiography, NR) and 3D (ex situ neutron computed tomography, NCT) information on structural transformation and elemental hydrogen content has been developed. NCT and X-ray tomography (XCT) experiments on a carbonized beech twig permitted comparison of the spatial distribution of hydrogen, better sensed by NCT, and carbon, oxygen, and heavier elements, better sensed by XCT. We have developed a methodology to directly compare structure and hydrogen-loss dynamics measured using neutron imaging with thermogravimetric analysis and differential thermogravimetry and thus can better understand the correlations between hydrogen and carbon release dynamics. While the methodology has been developed for the carbonization of biomass, we expect that it could be applied to in situ dynamic monitoring of other hydrogenous reacting systems with the appropriate spatial and temporal scales.</p>}},
  author       = {{Ossler, Frederik and Finney, Charles E.A. and Warren, Jeffrey M. and Bilheux, Jean Christophe and Zhang, Yuxuan and Mills, Rebecca A. and Santodonato, Louis J. and Bilheux, Hassina Z.}},
  issn         = {{0008-6223}},
  keywords     = {{Biomass pyrolysis; Carbonization; Hydrogen loss dynamics; Neutron imaging; Structural dynamics; Thermogravimetry}},
  language     = {{eng}},
  pages        = {{511--529}},
  publisher    = {{Elsevier}},
  series       = {{Carbon}},
  title        = {{Dynamics of hydrogen loss and structural changes in pyrolyzing biomass utilizing neutron imaging}},
  url          = {{http://dx.doi.org/10.1016/j.carbon.2020.11.060}},
  doi          = {{10.1016/j.carbon.2020.11.060}},
  volume       = {{176}},
  year         = {{2021}},
}