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Wet mixing combustion synthesis of CaO-based sorbents for high temperature cyclic CO2 capture

Luo, Cong; Zheng, Ying; Xu, Yongqing; Ding, Ning; Shen, Qiuwan LU and Zheng, Chuguang (2015) In Chemical Engineering Journal 267. p.111-116
Abstract
CaO-based sorbents are considered suitable candidates for cyclic CO2 capture at high temperatures. However, the CO2 capture capacities of natural CaO-based sorbents decrease sharply after only a few cycles. This paper presents a novel wet mixing combustion synthesis to improve the cyclic CO2 capture performance of CaO-based sorbents. Results show that preparation conditions significantly affected the cyclic performance of the sorbents. The optimal molar ratios of calcium to magnesium and fuel to metal oxides were 2 and 0.5, respectively, for the preparation process. The wet mixing combustion synthesis did not show the highest CO2 capture capacity in comparison to the sol-gel combustion synthesis, however, the proposed method is still valid... (More)
CaO-based sorbents are considered suitable candidates for cyclic CO2 capture at high temperatures. However, the CO2 capture capacities of natural CaO-based sorbents decrease sharply after only a few cycles. This paper presents a novel wet mixing combustion synthesis to improve the cyclic CO2 capture performance of CaO-based sorbents. Results show that preparation conditions significantly affected the cyclic performance of the sorbents. The optimal molar ratios of calcium to magnesium and fuel to metal oxides were 2 and 0.5, respectively, for the preparation process. The wet mixing combustion synthesis did not show the highest CO2 capture capacity in comparison to the sol-gel combustion synthesis, however, the proposed method is still valid due to the low cost of the materials used. The sorbent prepared by the new method could achieve relatively stable cyclic CO2 capture behavior, and showed a porous microstructure that can be maintained during cyclic reactions. The capture capacity of the sorbent obtained a 0.4 g CO2/g sorbent after 50 cycles. (C) 2015 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
CaO, CO2 capture, Wet mixing combustion synthesis, MgO, Calcium looping
in
Chemical Engineering Journal
volume
267
pages
111 - 116
publisher
Elsevier
external identifiers
  • wos:000350931800013
  • scopus:84921778338
ISSN
1385-8947
DOI
10.1016/j.cej.2015.01.005
language
English
LU publication?
yes
id
9e779cdb-db19-4621-b7c6-8e8b3f7909ef (old id 5293979)
date added to LUP
2015-04-24 16:21:46
date last changed
2017-10-08 04:01:15
@article{9e779cdb-db19-4621-b7c6-8e8b3f7909ef,
  abstract     = {CaO-based sorbents are considered suitable candidates for cyclic CO2 capture at high temperatures. However, the CO2 capture capacities of natural CaO-based sorbents decrease sharply after only a few cycles. This paper presents a novel wet mixing combustion synthesis to improve the cyclic CO2 capture performance of CaO-based sorbents. Results show that preparation conditions significantly affected the cyclic performance of the sorbents. The optimal molar ratios of calcium to magnesium and fuel to metal oxides were 2 and 0.5, respectively, for the preparation process. The wet mixing combustion synthesis did not show the highest CO2 capture capacity in comparison to the sol-gel combustion synthesis, however, the proposed method is still valid due to the low cost of the materials used. The sorbent prepared by the new method could achieve relatively stable cyclic CO2 capture behavior, and showed a porous microstructure that can be maintained during cyclic reactions. The capture capacity of the sorbent obtained a 0.4 g CO2/g sorbent after 50 cycles. (C) 2015 Elsevier B.V. All rights reserved.},
  author       = {Luo, Cong and Zheng, Ying and Xu, Yongqing and Ding, Ning and Shen, Qiuwan and Zheng, Chuguang},
  issn         = {1385-8947},
  keyword      = {CaO,CO2 capture,Wet mixing combustion synthesis,MgO,Calcium looping},
  language     = {eng},
  pages        = {111--116},
  publisher    = {Elsevier},
  series       = {Chemical Engineering Journal},
  title        = {Wet mixing combustion synthesis of CaO-based sorbents for high temperature cyclic CO2 capture},
  url          = {http://dx.doi.org/10.1016/j.cej.2015.01.005},
  volume       = {267},
  year         = {2015},
}