In:
Applied Organometallic Chemistry, Wiley, Vol. 33, No. 6 ( 2019-06)
Abstract:
Manganese‐ and cerium oxide‐modified titania catalysts were prepared by the deposition precipitation for the removal of elemental mercury (Hg 0 ) from simulated yellow phosphorus off‐gas at low temperature. In addition, these catalysts were characterized by X‐ray diffraction, Brunauer–Emmett–Teller measurements, X‐ray photoelectron spectroscopy and field‐emission scanning electron microscope to determine the surface morphology of the obtained compounds and explore their formation mechanism. The results revealed that a Mn–Ce loading and reaction temperature of 10% and 150 °C, respectively, as well as a Mn/Ce molar ratio of 2:1, led to an optimal efficiency for the oxidation of elemental mercury. Furthermore, the effects of flue gas components were investigated. The presence of O 2 clearly promoted the oxidation of Hg 0 . A CO atmosphere did not affect the Hg 0 oxidation, when compared with N 2 , whereas the presence of H 2 S and water vapor inhibited the oxidation process. Furthermore, the X‐ray photoelectron spectroscopy spectra of Hg 4f revealed that the elemental mercury adsorbed by the catalyst is present as HgO. Finally, the Hg 0 catalytic oxidation mechanism was discussed on the basis of the experimental results and characterization analysis.
Type of Medium:
Online Resource
ISSN:
0268-2605
,
1099-0739
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
1480791-9
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