Highly active OMS-2 for catalytic ozone decomposition under humid conditions
Highly active OMS-2 for catalytic ozone decomposition under humid conditions
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高活性 OMS-2,用于潮湿条件下催化臭氧分解
DOI:
10.1007/s12182-019-0335-5
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发表时间:
2019-08
影响因子:
5.6
通讯作者:
Ying Wei
中科院分区:
文献类型:
--
作者:
Bo Peng;Wenjing Boa;Linlin Wei;Runduo Zhang;Zhoujun Wang;Zhichun Wang;Ying Wei
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 KMnO4and MnAc2, by changing their molar ratios. These samples were characterized by N2adsorption–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 O3conversion 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.
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通讯作者:
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作者:
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通讯作者:
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