Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/140692
Title: | High-sulfur capacity and regenerable Zn-based sorbents derived from layered double hydroxide for hot coal gas desulfurization | Authors: | Wu, Mengmeng Chang, Bingwei Lim, Teik-Thye Oh, Wen-Da Lei, Junxi Mi, Jie |
Keywords: | Engineering::Environmental engineering | Issue Date: | 2018 | Source: | Wu, M., Chang, B., Lim, T.-T., Oh, W.-D., Lei, J., & Mi, J. (2018). High-sulfur capacity and regenerable Zn-based sorbents derived from layered double hydroxide for hot coal gas desulfurization. Journal of Hazardous Materials, 360, 391-401. doi:10.1016/j.jhazmat.2018.08.015 | Journal: | Journal of Hazardous Materials | Abstract: | The Zn-Al mixed metal oxide (ZnAl-MMO) with a plate-like structure was derived from Zn-Al layered double hydroxide. The ZnAl-MMO with a Zn/Al molar ratio of 3:1 exhibits superior absorption ability for H2S in a simulated coal gas at 600 ℃ due to the special structure of the ZnAl-MMO. Besides ZnS, elemental sulfur is also produced during the desulfurization process. The deactivation model could well simulate the absorption behavior of H2S. The sulfidation reaction over the sorbent shows large initial reaction rate constants (1110-5390 m3 min-1 kg-1) and low activation energy (29.5 kJ mol-1). The regeneration rate of the used sorbent can reach 99.8% under the optimum conditions. The regenerated sorbents still show high sulfur capacity (ca. 30%), implying its great application potential for industrial-scale desulfurization of the hot coal gas. | URI: | https://hdl.handle.net/10356/140692 | ISSN: | 0304-3894 | DOI: | 10.1016/j.jhazmat.2018.08.015 | Rights: | © 2018 Elsevier B.V. All rights reserved. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | CEE Journal Articles |
SCOPUSTM
Citations
10
17
Updated on Mar 10, 2021
PublonsTM
Citations
10
16
Updated on Mar 8, 2021
Page view(s)
155
Updated on Jun 25, 2022
Google ScholarTM
Check
Altmetric
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.