Advanced

Decomposition of hydrogen iodide via wood-based activated carbon catalysts for hydrogen production

Wang, Zhihua; Chen, Yun; Zhou, Chao; Whiddon, Ronald LU ; Zhang, Yanwei; Zhou, Junhu and Cen, Kefa (2011) In International Journal of Hydrogen Energy 36(1). p.216-223
Abstract
In this study, the catalytic activity of wood-based catalysts produced by different activation methods was evaluated for the decomposition of hydrogen iodide (HI) as part of the sulfur-iodine hydrogen production process. The wood-based activated carbon catalysts showed strong improvement in the HI conversion compared to a blank, especially for carbon catalysts activated using H3PO4. Proximate analysis and ultimate analysis, XRD, BET, SEM, Boehm titration, TPD-MS, XPS were carried out to examine the characteristics of the catalysts. High carbon content (C-ad) seemed to favor high catalytic activity, while high ash content (A(ad)) reduced catalytic activity of samples likely due to displacement of catalytically active material.... (More)
In this study, the catalytic activity of wood-based catalysts produced by different activation methods was evaluated for the decomposition of hydrogen iodide (HI) as part of the sulfur-iodine hydrogen production process. The wood-based activated carbon catalysts showed strong improvement in the HI conversion compared to a blank, especially for carbon catalysts activated using H3PO4. Proximate analysis and ultimate analysis, XRD, BET, SEM, Boehm titration, TPD-MS, XPS were carried out to examine the characteristics of the catalysts. High carbon content (C-ad) seemed to favor high catalytic activity, while high ash content (A(ad)) reduced catalytic activity of samples likely due to displacement of catalytically active material. Oxygen-containing groups were not directly responsible for catalytic activity. HI conversion increased as the surface area and pore diameter increased. Unsaturated carbon atoms maybe the main active constituent, therefore, low area density of oxygen [O] that was closely related to unsaturated carbon atoms was beneficial to HI conversion. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Hydrogen production, Sulfur-iodine cycle, Hydrogen iodide, decomposition, Activated carbon
in
International Journal of Hydrogen Energy
volume
36
issue
1
pages
216 - 223
publisher
Elsevier
external identifiers
  • wos:000288102700020
  • scopus:79451476072
ISSN
1879-3487
DOI
10.1016/j.ijhydene.2010.10.058
language
English
LU publication?
yes
id
c55ca772-cd49-4e45-8883-4cf9e59a7dc8 (old id 1868411)
date added to LUP
2011-04-19 12:26:09
date last changed
2017-09-10 04:03:14
@article{c55ca772-cd49-4e45-8883-4cf9e59a7dc8,
  abstract     = {In this study, the catalytic activity of wood-based catalysts produced by different activation methods was evaluated for the decomposition of hydrogen iodide (HI) as part of the sulfur-iodine hydrogen production process. The wood-based activated carbon catalysts showed strong improvement in the HI conversion compared to a blank, especially for carbon catalysts activated using H3PO4. Proximate analysis and ultimate analysis, XRD, BET, SEM, Boehm titration, TPD-MS, XPS were carried out to examine the characteristics of the catalysts. High carbon content (C-ad) seemed to favor high catalytic activity, while high ash content (A(ad)) reduced catalytic activity of samples likely due to displacement of catalytically active material. Oxygen-containing groups were not directly responsible for catalytic activity. HI conversion increased as the surface area and pore diameter increased. Unsaturated carbon atoms maybe the main active constituent, therefore, low area density of oxygen [O] that was closely related to unsaturated carbon atoms was beneficial to HI conversion. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.},
  author       = {Wang, Zhihua and Chen, Yun and Zhou, Chao and Whiddon, Ronald and Zhang, Yanwei and Zhou, Junhu and Cen, Kefa},
  issn         = {1879-3487},
  keyword      = {Hydrogen production,Sulfur-iodine cycle,Hydrogen iodide,decomposition,Activated carbon},
  language     = {eng},
  number       = {1},
  pages        = {216--223},
  publisher    = {Elsevier},
  series       = {International Journal of Hydrogen Energy},
  title        = {Decomposition of hydrogen iodide via wood-based activated carbon catalysts for hydrogen production},
  url          = {http://dx.doi.org/10.1016/j.ijhydene.2010.10.058},
  volume       = {36},
  year         = {2011},
}