Desulfurization of hot coal gas over high-surface-area LaMeO x/MCM-41 sorbents

B. S. Liu; Z. Y. Wan; Y. P. Zhan; C. T. Au

doi:10.1016/j.fuel.2012.03.048

Desulfurization of hot coal gas over high-surface-area LaMeO _x/MCM-41 sorbents

B. S. Liu^*
, Z. Y. Wan
, Y. P. Zhan
, C. T. Au

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

49 Citations (Scopus)

Abstract

We prepared LaMeO _x/MCM-41 (Me = Co, Zn, Fe) sorbents of high specific surface area by means of sol-gel method. For comparison purposes, the unsupported composite metal oxides were also synthesized. Breakthrough and total sulfur capacity over LaFeO ₃/M41 were 3.24 and 3.70 g, respectively, significantly higher than the former (0.35 g) over unsupported LaFeO ₃. The materials were characterized using Brunauer, Emmett and Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (H ₂-TPR), temperature-programmed reduction and sulfidation (TPRS), and high-resolution transmission electron spectroscopy (HRTEM) techniques. Their ability for H ₂S removal was evaluated over a fixed-bed reactor, and the effects of reaction temperature, feed composition, and support on desulfurization were studied. The results of successive sulfidation/regeneration cycles (×10) revealed that the LaFeO ₃/M41 sorbent was stable enough for desulfurization of hot coal gas in chemical industry.

Original language	English
Pages (from-to)	95-102
Number of pages	8
Journal	Fuel
Volume	98
DOIs	https://doi.org/10.1016/j.fuel.2012.03.048
Publication status	Published - Aug 2012

User-Defined Keywords

H S removal
Hot coal gas
Mesoporous materials
Rare earth oxides

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10.1016/j.fuel.2012.03.048

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@article{13ff84994c7442f7906b5b9d621aaabc,

title = "Desulfurization of hot coal gas over high-surface-area LaMeO x/MCM-41 sorbents",

abstract = "We prepared LaMeO x/MCM-41 (Me = Co, Zn, Fe) sorbents of high specific surface area by means of sol-gel method. For comparison purposes, the unsupported composite metal oxides were also synthesized. Breakthrough and total sulfur capacity over LaFeO 3/M41 were 3.24 and 3.70 g, respectively, significantly higher than the former (0.35 g) over unsupported LaFeO 3. The materials were characterized using Brunauer, Emmett and Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (H 2-TPR), temperature-programmed reduction and sulfidation (TPRS), and high-resolution transmission electron spectroscopy (HRTEM) techniques. Their ability for H 2S removal was evaluated over a fixed-bed reactor, and the effects of reaction temperature, feed composition, and support on desulfurization were studied. The results of successive sulfidation/regeneration cycles (×10) revealed that the LaFeO 3/M41 sorbent was stable enough for desulfurization of hot coal gas in chemical industry.",

keywords = "H S removal, Hot coal gas, Mesoporous materials, Rare earth oxides",

author = "Liu, \{B. S.\} and Wan, \{Z. Y.\} and Zhan, \{Y. P.\} and Au, \{C. T.\}",

note = "Funding Information: We thank the financial support of National Natural Science Foundation of China and BAOSTEEL Group Corporation (Grant No. 50876122). We are grateful to the Center for Surface Analysis and Research, HKBU, for XRD and XPS analysis of samples.",

year = "2012",

month = aug,

doi = "10.1016/j.fuel.2012.03.048",

language = "English",

volume = "98",

pages = "95--102",

journal = "Fuel",

issn = "0016-2361",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Desulfurization of hot coal gas over high-surface-area LaMeO x/MCM-41 sorbents

AU - Liu, B. S.

AU - Wan, Z. Y.

AU - Zhan, Y. P.

AU - Au, C. T.

N1 - Funding Information: We thank the financial support of National Natural Science Foundation of China and BAOSTEEL Group Corporation (Grant No. 50876122). We are grateful to the Center for Surface Analysis and Research, HKBU, for XRD and XPS analysis of samples.

PY - 2012/8

Y1 - 2012/8

N2 - We prepared LaMeO x/MCM-41 (Me = Co, Zn, Fe) sorbents of high specific surface area by means of sol-gel method. For comparison purposes, the unsupported composite metal oxides were also synthesized. Breakthrough and total sulfur capacity over LaFeO 3/M41 were 3.24 and 3.70 g, respectively, significantly higher than the former (0.35 g) over unsupported LaFeO 3. The materials were characterized using Brunauer, Emmett and Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (H 2-TPR), temperature-programmed reduction and sulfidation (TPRS), and high-resolution transmission electron spectroscopy (HRTEM) techniques. Their ability for H 2S removal was evaluated over a fixed-bed reactor, and the effects of reaction temperature, feed composition, and support on desulfurization were studied. The results of successive sulfidation/regeneration cycles (×10) revealed that the LaFeO 3/M41 sorbent was stable enough for desulfurization of hot coal gas in chemical industry.

AB - We prepared LaMeO x/MCM-41 (Me = Co, Zn, Fe) sorbents of high specific surface area by means of sol-gel method. For comparison purposes, the unsupported composite metal oxides were also synthesized. Breakthrough and total sulfur capacity over LaFeO 3/M41 were 3.24 and 3.70 g, respectively, significantly higher than the former (0.35 g) over unsupported LaFeO 3. The materials were characterized using Brunauer, Emmett and Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (H 2-TPR), temperature-programmed reduction and sulfidation (TPRS), and high-resolution transmission electron spectroscopy (HRTEM) techniques. Their ability for H 2S removal was evaluated over a fixed-bed reactor, and the effects of reaction temperature, feed composition, and support on desulfurization were studied. The results of successive sulfidation/regeneration cycles (×10) revealed that the LaFeO 3/M41 sorbent was stable enough for desulfurization of hot coal gas in chemical industry.

KW - H S removal

KW - Hot coal gas

KW - Mesoporous materials

KW - Rare earth oxides

UR - https://www.scopus.com/pages/publications/84861978217

U2 - 10.1016/j.fuel.2012.03.048

DO - 10.1016/j.fuel.2012.03.048

M3 - Journal article

AN - SCOPUS:84861978217

SN - 0016-2361

VL - 98

SP - 95

EP - 102

JO - Fuel

JF - Fuel

ER -

Desulfurization of hot coal gas over high-surface-area LaMeO _x/MCM-41 sorbents

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