Highly active OMS-2 for catalytic ozone decomposition under humid conditions

Abstract Four kinds of cryptomelane-type octahedral molecular sieve (OMS)-2-X (the X represents the molar ratio of KMnO4/MnAc2) were prepared as catalytic materials for ozone decomposition through a one-step hydrothermal reaction of KMnO4 and MnAc2, by changing their molar ratios. These samples were...

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Autores principales:	Bo Peng, Wenjing Bao, Linlin Wei, Runduo Zhang, Zhoujun Wang, Zhichun Wang, Ying Wei
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2019
Materias:	Cryptomelane type Manganese oxide Ozone decomposition Nanofiber Oxygen vacancy Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/6058f871a1d040609107c204afcdda5b
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spelling	oai:doaj.org-article:6058f871a1d040609107c204afcdda5b2021-12-02T11:24:53ZHighly active OMS-2 for catalytic ozone decomposition under humid conditions10.1007/s12182-019-0335-51672-51071995-8226https://doaj.org/article/6058f871a1d040609107c204afcdda5b2019-06-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-0335-5https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Four kinds of cryptomelane-type octahedral molecular sieve (OMS)-2-X (the X represents the molar ratio of KMnO4/MnAc2) were prepared as catalytic materials for ozone decomposition through a one-step hydrothermal reaction of KMnO4 and MnAc2, by changing their molar ratios. These samples were characterized by N2 adsorption–desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), temperature programmed reduction by H2 (H2-TPR) and X-ray photoelectron spectroscopy (XPS). Among them, the OMS-2-0.7 sample showed the best O3 conversion of 92% under high relative humidity (RH) of 90% and gas hourly space velocity of 585,000 h−1. This was accordingly thought as a possible way for purifying ozone-containing waste gases under high RH atmospheres. The efficiency of ozone decomposition of the prepared OMS-2-X sample was found to be related to specific surface area, particle size, surface oxygen vacancies, and Mn3+ cation amounts. The one-step hydrothermal synthesis was shown to be a simple method to prepare the considerably active OMS-2 solids for ozone decomposition.Bo PengWenjing BaoLinlin WeiRunduo ZhangZhoujun WangZhichun WangYing WeiKeAi Communications Co., Ltd.articleCryptomelane typeManganese oxideOzone decompositionNanofiberOxygen vacancyScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 4, Pp 912-919 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cryptomelane type Manganese oxide Ozone decomposition Nanofiber Oxygen vacancy Science Q Petrology QE420-499
spellingShingle	Cryptomelane type Manganese oxide Ozone decomposition Nanofiber Oxygen vacancy Science Q Petrology QE420-499 Bo Peng Wenjing Bao Linlin Wei Runduo Zhang Zhoujun Wang Zhichun Wang Ying Wei Highly active OMS-2 for catalytic ozone decomposition under humid conditions
description	Abstract Four kinds of cryptomelane-type octahedral molecular sieve (OMS)-2-X (the X represents the molar ratio of KMnO4/MnAc2) were prepared as catalytic materials for ozone decomposition through a one-step hydrothermal reaction of KMnO4 and MnAc2, by changing their molar ratios. These samples were characterized by N2 adsorption–desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), temperature programmed reduction by H2 (H2-TPR) and X-ray photoelectron spectroscopy (XPS). Among them, the OMS-2-0.7 sample showed the best O3 conversion of 92% under high relative humidity (RH) of 90% and gas hourly space velocity of 585,000 h−1. This was accordingly thought as a possible way for purifying ozone-containing waste gases under high RH atmospheres. The efficiency of ozone decomposition of the prepared OMS-2-X sample was found to be related to specific surface area, particle size, surface oxygen vacancies, and Mn3+ cation amounts. The one-step hydrothermal synthesis was shown to be a simple method to prepare the considerably active OMS-2 solids for ozone decomposition.
format	article
author	Bo Peng Wenjing Bao Linlin Wei Runduo Zhang Zhoujun Wang Zhichun Wang Ying Wei
author_facet	Bo Peng Wenjing Bao Linlin Wei Runduo Zhang Zhoujun Wang Zhichun Wang Ying Wei
author_sort	Bo Peng
title	Highly active OMS-2 for catalytic ozone decomposition under humid conditions
title_short	Highly active OMS-2 for catalytic ozone decomposition under humid conditions
title_full	Highly active OMS-2 for catalytic ozone decomposition under humid conditions
title_fullStr	Highly active OMS-2 for catalytic ozone decomposition under humid conditions
title_full_unstemmed	Highly active OMS-2 for catalytic ozone decomposition under humid conditions
title_sort	highly active oms-2 for catalytic ozone decomposition under humid conditions
publisher	KeAi Communications Co., Ltd.
publishDate	2019
url	https://doaj.org/article/6058f871a1d040609107c204afcdda5b
work_keys_str_mv	AT bopeng highlyactiveoms2forcatalyticozonedecompositionunderhumidconditions AT wenjingbao highlyactiveoms2forcatalyticozonedecompositionunderhumidconditions AT linlinwei highlyactiveoms2forcatalyticozonedecompositionunderhumidconditions AT runduozhang highlyactiveoms2forcatalyticozonedecompositionunderhumidconditions AT zhoujunwang highlyactiveoms2forcatalyticozonedecompositionunderhumidconditions AT zhichunwang highlyactiveoms2forcatalyticozonedecompositionunderhumidconditions AT yingwei highlyactiveoms2forcatalyticozonedecompositionunderhumidconditions
_version_	1718395940916690944

Highly active OMS-2 for catalytic ozone decomposition under humid conditions

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