Catalytic oxidation of Hg0 by CuO–MnO2–Fe2O3/γ-Al2O3 catalyst

Wang, Pengying; Su, Sheng; Xiang, Jun; Cao, Fan; Sun, Lushi; Lei, Siyuan

doi:10.1016/j.cej.2013.03.060

Cited by 120 publications

(32 citation statements)

References 37 publications

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“…Mn is also acknowledged to display a high activity for the partial or total oxidation of different hydrocarbons [1] thanks to its multiple oxidation states providing labile oxygen in crystalline lattice. MnO x can be anticipated to similarly oxidize elemental mercury at the typical flue gas temperatures [7,10].…”

Section: Introductionmentioning

confidence: 99%

Elemental mercury capture and oxidation by a regenerable manganese-based sorbent: The effect of gas composition

Scala

Cimino

2015

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Elemental mercury capture and oxidation by a regenerable manganese-based sorbent: The effect of gas composition

Scala

Cimino

2015

Chemical Engineering Journal

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“…The main active component of a metal oxide catalyst is Fe 2 O 3 , MnO 2 , CeO 2 , V 2 O 5 , and so on, especially MnO 2 , which has been proven to be an effective active component in low temperature catalysts [12][13][14]. Qiao for mercury oxidation at 373-473 K, and the mercury oxidation efficiency reached over 90% in the present of 20 ppm HCl [16].…”

Section: Introductionmentioning

confidence: 99%

Catalytic oxidation of elemental mercury by Mn–Mo/CNT at low temperature

Zhao

Liu

Zhou

et al. 2016

Chemical Engineering Journal

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“…5,6 A variety of technologies have been investigated to constrain Hg 0 from the ue gas. 12,13 For the oxidization of elemental mercury by chlorine and oxygen, there is also a correlation between HCl concentration in the ue gas and the extent of elemental mercury oxidised. [7][8][9] However, this technology has a few drawbacks such as high operation expenses, poor capacity, narrow temperature range of application, and slow adsorption and regeneration rates.…”

Section: Introductionmentioning

confidence: 99%

Catalytic oxidation and adsorption of elemental mercury over nanostructured CeO₂–MnO_x catalyst

et al. 2015

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A nanostructured CeO 2 -MnO x catalyst was synthesized by a coprecipitation method and subjected to different calcination temperatures at 773 and 1073 K to understand the surface structure and the thermal stability. The structural and redox properties were deeply investigated by various techniques, namely, Xray diffraction (XRD), inductively coupled plasma-optical emission spectroscopy (ICP-OES), Brunauer-Emmett-Teller (BET) surface area, transmission electron microscopy (TEM), Raman spectroscopy (RS), hydrogen-temperature programmed reduction (H 2 -TPR), and X-ray photoelectron spectroscopy (XPS). The CeO 2 -MnO x catalyst calcined at 773 K was tested towards elemental mercury (Hg 0 ) oxidation and the achieved results are compared with the pure CeO 2 and MnO x . The XRD and TEM results confirmed the incorporation of Mn ions into the ceria lattice and the formation of a nanostructured solid solution, respectively. The RS and TPR results showed that the CeO 2 -MnO x catalyst exhibits more oxygen vacancies with superior redox ability over CeO 2 and MnO x . XPS analysis indicates that Ce and Mn existed in multiple oxidation states. Compared to pure CeO 2 and MnO x , the CeO 2 -MnO x catalyst exhibited greater Hg 0 oxidation efficiency (E oxi ) of 11.7, 33.5, and 89.6% in the presence of HCl, O 2 , and HCl/O 2mix conditions, respectively. The results clearly indicated that the HCl/O 2 -mix had a promotional effect on the catalytic Hg 0 oxidation. This was most likely due to the presence of surface oxygen species and oxygen vacancies being generated by a synergetic effect between CeO 2 and MnO x . In the presence of HCl, the CeO 2 -MnO x catalyst exhibited good adsorption efficiency (E ads ) of 92.4% over pure CeO 2 (46.5%) and MnO x (80.6%). It was found that increasing the operating temperature from 423 to 573 K resulted in considerable increase of E oxi and a decrease in the sorption of Hg 0 on the catalyst. .in; Tel: +61 3 9925 3365 † Electronic supplementary information (ESI) available: The chemical compositions of CeO 2 -MnO x mixed oxides, binding energies of spent catalysts, experimental diagram, calibration experiments for Hg 0 inlet , Ce 3d, O 1s, Mn 2p, Hg 4f and Cl 2p XPS spectra of spent catalysts calcined at 773 K. See

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Catalytic oxidation of Hg0 by CuO–MnO2–Fe2O3/γ-Al2O3 catalyst

Cited by 120 publications

References 37 publications

Elemental mercury capture and oxidation by a regenerable manganese-based sorbent: The effect of gas composition

Elemental mercury capture and oxidation by a regenerable manganese-based sorbent: The effect of gas composition

Catalytic oxidation of elemental mercury by Mn–Mo/CNT at low temperature

Catalytic oxidation and adsorption of elemental mercury over nanostructured CeO₂–MnO_x catalyst

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Catalytic oxidation of Hg0 by CuO–MnO2–Fe2O3/γ-Al2O3 catalyst

Cited by 120 publications

References 37 publications

Elemental mercury capture and oxidation by a regenerable manganese-based sorbent: The effect of gas composition

Elemental mercury capture and oxidation by a regenerable manganese-based sorbent: The effect of gas composition

Catalytic oxidation of elemental mercury by Mn–Mo/CNT at low temperature

Catalytic oxidation and adsorption of elemental mercury over nanostructured CeO2–MnOx catalyst

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Catalytic oxidation and adsorption of elemental mercury over nanostructured CeO₂–MnO_x catalyst