Effect of support on the catalytic activity of manganese oxide catalyts for toluene combustion

Journal of Hazardous Materials
Gulin Selda Pozan

Abstract

The aim of this work was to study combustion of toluene (1000ppm) over MnO(2) modified with different supports. α-Al(2)O(3) and γ-Al(2)O(3) obtained from Boehmite, γ-Al(2)O(3) (commercial), SiO(2), TiO(2) and ZrO(2) were used as commercial support materials. In view of potential interest of this process, the influence of support material on the catalytic performance was discussed. The deposition of 9.5MnO(2) was performed by impregnation over support. The catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction and oxidation (TPR/TPO) and thermogravimetric analysis (TGA). The catalytic tests were carried out at atmospheric pressure in a fixed-bed flow reactor. 9.5MnO(2)/α-Al(2)O(3)(B) (synthesized from Boehmite) catalyst exhibits the highest catalytic activity, over which the toluene conversion was up to 90% at a temperature of 289°C. Considering all the characterization and reaction data reported in this study, it was concluded that the manganese state and oxygen species played an important role in the catalytic activity.

References

Jan 1, 1991·Journal of the Air & Waste Management Association·D R van der VaartA H Wehe
Mar 20, 2002·Journal of Hazardous Materials·Sang Chai Kim

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Citations

Sep 3, 2013·Journal of Hazardous Materials·Michalis KonsolakisJosé L Figueiredo
Nov 11, 2014·TheScientificWorldJournal·Samira BagheriSharifah Bee Abd Hamid
May 20, 2016·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Sónia Alexandra Correia CarabineiroJosé Luís Figueiredo
Dec 19, 2019·Environmental Science and Pollution Research International·Yue LyuShanhong Li
Nov 2, 2018·Journal of Hazardous Materials·Guangxin ZhangZaher Hashisho

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