In:
Journal of Physics: Conference Series, IOP Publishing, Vol. 1676, No. 1 ( 2020-11-01), p. 012064-
Abstract:
The air pollution caused by VOCs emssions has drawn considerable attention in recent years. Many catalyst systems with excellent activity were studied for the catalytic oxidation of VOCs. In this work, using air containing toluene as the simulation of industrial emissions, MnO x -CeO 2 /Powder zeolite and MnO x -CeO 2 /Honeycomb zeolite catalyst samples prepared by the isometric impregnation method were studied for catalytic performance of toluene. The catalysts were characterized by SEM, BET, XRD, SEM, H 2 -TPR and O 2 -TPD. The research results obtained showed that MnO x -CeO 2 /Powder zeolite catalysts exhibited better activity than MnO x -CeO 2 /Honeycomb zeolite catalyst at lower temperatures, the MnO x -CeO 2 /Powder zeolite catalyst presented better catalytic performance with T 50 =223°Cand T 99 =275°Cunder the condition of GHSV of 15000h −1 and toluene concentration of 100ppm, which is 23°Cand 47°Clower than MnO x -CeO 2 /Honeycomb zeolite, respectively. The characterization results also indicated that the catalytic activity was relavant closely with specific surface area, active oxygen species, catalyst morphology and valence of manganese and cerium oxides. Also, the catalyst has an excellent stability in the catalytic combustion towards toluene.
Type of Medium:
Online Resource
ISSN:
1742-6588
,
1742-6596
DOI:
10.1088/1742-6596/1676/1/012064
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2020
detail.hit.zdb_id:
2166409-2
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