Fe-Mn-Ce/ceramic powder composite catalyst for highly volatile elemental mercury removal in simulated coal-fired flue gas

Jianrong Li; Jinsheng Chen; Yanke Yu; Chi He

doi:10.1016/j.jiec.2014.11.015

Fe-Mn-Ce/ceramic powder composite catalyst for highly volatile elemental mercury removal in simulated coal-fired flue gas

Jianrong Li
, Jinsheng Chen
, Yanke Yu
, Chi He

School of Energy and Power Engineering

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

The Fe-Mn-Ce/CP catalyst prepared by the incipient-wetness impregnation method was investigated for elemental mercury (Hg⁰) removal in simulated coal-fired flue gas. The incorporation of Fe could remarkably enhance the SO₂-resistance of Fe-Mn-Ce/CP catalyst at low temperature, and the existence of water vapor had negative impact on Hg⁰ removal efficiency. More than 95% of Hg⁰ could be removed at 100°C under the conditions of 60ppm HCl, 3% O₂ (v/v), 5% H₂O (v/v) and 400ppm SO₂. Hg-TPD results indicated that Hg⁰ adsorption amount decreased after the addition of H₂O or SO₂. The XPS results revealed that the incorporation of Fe could enhance the contents of high valence Mn^x+ (i.e., Mn³⁺/Mn⁴⁺) and Ce³⁺ species in the composite catalysts, which are favorable for the oxidation process of elemental mercury. The surface characteristics were not the primary factor determining the catalytic activity. Overall, the catalytic performance of the Fe-Mn-Ce/CP catalyst was closely related to the Fe³⁺ state, high ratios of (Mn⁴⁺+Mn³⁺)/Mn²⁺ and high content of not fully coordinated cerium species.

Original language	English
Pages (from-to)	352-358
Number of pages	7
Journal	Journal of Industrial and Engineering Chemistry
Volume	25
DOIs	https://doi.org/10.1016/j.jiec.2014.11.015
State	Published - 25 May 2015

Keywords

Catalytic oxidation
Cerium
Flue gas
Iron
Manganese
Mercury

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10.1016/j.jiec.2014.11.015

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@article{432e54a04970408fb948b5c38ce7a142,

title = "Fe-Mn-Ce/ceramic powder composite catalyst for highly volatile elemental mercury removal in simulated coal-fired flue gas",

abstract = "The Fe-Mn-Ce/CP catalyst prepared by the incipient-wetness impregnation method was investigated for elemental mercury (Hg0) removal in simulated coal-fired flue gas. The incorporation of Fe could remarkably enhance the SO2-resistance of Fe-Mn-Ce/CP catalyst at low temperature, and the existence of water vapor had negative impact on Hg0 removal efficiency. More than 95\% of Hg0 could be removed at 100°C under the conditions of 60ppm HCl, 3\% O2 (v/v), 5\% H2O (v/v) and 400ppm SO2. Hg-TPD results indicated that Hg0 adsorption amount decreased after the addition of H2O or SO2. The XPS results revealed that the incorporation of Fe could enhance the contents of high valence Mnx+ (i.e., Mn3+/Mn4+) and Ce3+ species in the composite catalysts, which are favorable for the oxidation process of elemental mercury. The surface characteristics were not the primary factor determining the catalytic activity. Overall, the catalytic performance of the Fe-Mn-Ce/CP catalyst was closely related to the Fe3+ state, high ratios of (Mn4++Mn3+)/Mn2+ and high content of not fully coordinated cerium species.",

keywords = "Catalytic oxidation, Cerium, Flue gas, Iron, Manganese, Mercury",

author = "Jianrong Li and Jinsheng Chen and Yanke Yu and Chi He",

note = "Publisher Copyright: {\textcopyright} 2014 The Korean Society of Industrial and Engineering Chemistry.",

year = "2015",

month = may,

day = "25",

doi = "10.1016/j.jiec.2014.11.015",

language = "英语",

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TY - JOUR

T1 - Fe-Mn-Ce/ceramic powder composite catalyst for highly volatile elemental mercury removal in simulated coal-fired flue gas

AU - Li, Jianrong

AU - Chen, Jinsheng

AU - Yu, Yanke

AU - He, Chi

PY - 2015/5/25

Y1 - 2015/5/25

N2 - The Fe-Mn-Ce/CP catalyst prepared by the incipient-wetness impregnation method was investigated for elemental mercury (Hg0) removal in simulated coal-fired flue gas. The incorporation of Fe could remarkably enhance the SO2-resistance of Fe-Mn-Ce/CP catalyst at low temperature, and the existence of water vapor had negative impact on Hg0 removal efficiency. More than 95% of Hg0 could be removed at 100°C under the conditions of 60ppm HCl, 3% O2 (v/v), 5% H2O (v/v) and 400ppm SO2. Hg-TPD results indicated that Hg0 adsorption amount decreased after the addition of H2O or SO2. The XPS results revealed that the incorporation of Fe could enhance the contents of high valence Mnx+ (i.e., Mn3+/Mn4+) and Ce3+ species in the composite catalysts, which are favorable for the oxidation process of elemental mercury. The surface characteristics were not the primary factor determining the catalytic activity. Overall, the catalytic performance of the Fe-Mn-Ce/CP catalyst was closely related to the Fe3+ state, high ratios of (Mn4++Mn3+)/Mn2+ and high content of not fully coordinated cerium species.

AB - The Fe-Mn-Ce/CP catalyst prepared by the incipient-wetness impregnation method was investigated for elemental mercury (Hg0) removal in simulated coal-fired flue gas. The incorporation of Fe could remarkably enhance the SO2-resistance of Fe-Mn-Ce/CP catalyst at low temperature, and the existence of water vapor had negative impact on Hg0 removal efficiency. More than 95% of Hg0 could be removed at 100°C under the conditions of 60ppm HCl, 3% O2 (v/v), 5% H2O (v/v) and 400ppm SO2. Hg-TPD results indicated that Hg0 adsorption amount decreased after the addition of H2O or SO2. The XPS results revealed that the incorporation of Fe could enhance the contents of high valence Mnx+ (i.e., Mn3+/Mn4+) and Ce3+ species in the composite catalysts, which are favorable for the oxidation process of elemental mercury. The surface characteristics were not the primary factor determining the catalytic activity. Overall, the catalytic performance of the Fe-Mn-Ce/CP catalyst was closely related to the Fe3+ state, high ratios of (Mn4++Mn3+)/Mn2+ and high content of not fully coordinated cerium species.

KW - Catalytic oxidation

KW - Cerium

KW - Flue gas

KW - Iron

KW - Manganese

KW - Mercury

UR - https://www.scopus.com/pages/publications/84930087088

U2 - 10.1016/j.jiec.2014.11.015

DO - 10.1016/j.jiec.2014.11.015

M3 - 文章

AN - SCOPUS:84930087088

SN - 1226-086X

VL - 25

SP - 352

EP - 358

JO - Journal of Industrial and Engineering Chemistry

JF - Journal of Industrial and Engineering Chemistry

ER -

Fe-Mn-Ce/ceramic powder composite catalyst for highly volatile elemental mercury removal in simulated coal-fired flue gas

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Keywords

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