Catalytic Decomposition of Ozone by Manganese Oxide Supported on Cordierite Honeycomb Ceramics

doi:10.11944/j.issn.1000-0518.2020.11.200143

Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (11): 1293-1300.DOI: 10.11944/j.issn.1000-0518.2020.11.200143

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Catalytic Decomposition of Ozone by Manganese Oxide Supported on Cordierite Honeycomb Ceramics

CHEN Chonglai^a, ZHANG Wenxia^a, QIU Jianping^a, JIA Aiping^b, LUO Mengfei^b*

^aCollege of Pharmaceutics and Materials Engineering,Jinhua Polytechnic,Jinhua,Zhejiang 321017,China;
^bCollege of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua,Zhejiang 321004,China

Received:2020-05-14 Revised:2020-06-19 Accepted:2020-07-08 Published:2020-11-01 Online:2020-11-04
Contact: LUO Mengfei,professor; Tel:0579-82283910; E-mail:mengfeiluo@zjnu.cn; Research interests:green catalysis

Abstract

Abstract: A series of different manganese oxides was mixed with aluminum gel and coated to cordierite honeycomb ceramics to produce monolithic catalysts for improving the application ability of catalysts. The performances of these monolithic catalysts in the decomposition of ozone at ambient temperature and pressure were investigated. The structures of these catalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), BET specific surface area method and H₂-programmed temperature reduction (H₂-TPR) techniques. The results show that the activities of different manganese oxide supported monolithic catalysts are arranged in the following order: OMS-2 (Manganese oxide octahedral molecular sieve)＞MnO₂＞Mn₂O₃＞Mn₃O₄＞MnO. Compared with other manganese oxides, OMS-2 supported cordierite honeycomb ceramics monolithic catalyst has the highest activity to decompose ozone, probably due to the fact that OMS-2 has a larger specific surface area and better reducibility, which are favorable for the oxygen vacancy formation on the surface and participation in the decomposition of ozone. The results of this paper provide a theoretical basis for improving the performance of cordierite honeycomb ceramic supported monolithic catalyst for ozone decomposition.

Key words: ozone, manganese oxide octahedral molecular sieve, cordierite honeycomb ceramics, monolithic catalysts

CLC Number:

O643

CHEN Chonglai, ZHANG Wenxia, QIU Jianping, JIA Aiping, LUO Mengfei. Catalytic Decomposition of Ozone by Manganese Oxide Supported on Cordierite Honeycomb Ceramics[J]. Chinese Journal of Applied Chemistry, 2020, 37(11): 1293-1300.

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Catalytic Decomposition of Ozone by Manganese Oxide Supported on Cordierite Honeycomb Ceramics

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