The Effects of CeO2 Addition on the Performance of Zinc Oxide Sorbent Prepared by Microwave Solid-State Method for H2S Removal

DOI

10.2991/isesce-15.2015.43How to use a DOI?

Keywords

CeO2-doped, ZnO sorbent, High temperature coal gas, Desulfurization

Abstract

ZnO sorbents with different CeO2 loadings were prepared by microwave calcination and tested the performance for H2S removal in a fixed-bed reactor at 500 . The results revealed that the Ce-doped sorbents have a higher efficiency and longer breakthrough time compared with non-modified sorbents. The optimal sulfur capacity (13.03 gS/100 g) and breakthrough time (17.5 h) were obtained when the content of CeO2 up to 4 wt.%. XRD, SEM, XPS and mercury porosimetry methods were used to characterize the structure of sorbents. Analysis data indicated that the addition of CeO2 leads to better pore structure and larger specific surface, which facilitates the diffusion of H2S into the active sites. Furthermore, the presence of CeO2 also results in an increase in the content of surface elements including Zn and O, which contributes to improve the ability of H2S removal.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zibing Su
AU  - Mengmeng Wu
AU  - Yang Li
AU  - Yu Feng
AU  - Jie Mi
PY  - 2015/12
DA  - 2015/12
TI  - The Effects of CeO2 Addition on the Performance of Zinc Oxide Sorbent Prepared by Microwave Solid-State Method for H2S Removal
BT  - Proceedings of the 2015 International Symposium on Energy Science and Chemical Engineering
PB  - Atlantis Press
SP  - 216
EP  - 222
SN  - 2352-5401
UR  - https://doi.org/10.2991/isesce-15.2015.43
DO  - 10.2991/isesce-15.2015.43
ID  - Su2015/12
ER  -