In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2017, No. 19 ( 2017-05-18), p. 2573-2579
Abstract:
Through a room‐temperature ultrasound‐assisted redox process, mesoporous manganese oxides were synthesized in short reaction times of 3–9 h. At room temperature, the resultant materials showed superior performance for the elimination of low‐concentration NO (10 ppm). Specifically, under humid conditions (50–90 % relative humidity), 97 % NO removal efficiency was obtained over 110 h without deactivation. Synergetic effects between Mn 2+ , Mn 3+ , and Mn 4+ ions were proposed to explain the oxidation of NO to NO 2 on the surface of the catalyst. Density functional theory (DFT) calculations indicated that water molecules strengthen the chemisorption of NO 2 on manganese oxide (001) owing to a much higher adsorption energy. As a result, the probability of the reaction between NO 2 and H 2 O increases, and the formation of volatile nitric acid ensures that the catalytically active sites are always available.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2017.19
DOI:
10.1002/ejic.201700008
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
1475009-0
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