期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 107, 期 1-2, 页码 119-127出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2011.07.004
关键词
TiO2 photocatalysis; Benzene; Muconaldehyde; Phenol; Ring-opening; Isotopic tracing method
资金
- Vietnam International Education Development (VIED), Ministry of Education and Training (MOET), Vietnam
- Graduate School of Engineering Science, Osaka University, Japan
When benzene was oxidized on TiO2-photocatalysts, muconaldehyde as well as phenol was identified as a product. Muconaldehyde was not produced from phenol, indicating that muconaldehyde and phenol are produced as initial stable intermediates by independent pathways. The amount of muconaldehyde produced in the reaction solution was low because it was rapidly oxidized on the photocatalyst. The contributions of the two pathways to the mineralization of benzene were analyzed by isotopic tracing methods using labeled benzene ((C6H6)-C-13) and labeled phenol ((C6H5OH)-C-13). The results showed that a larger part (60-70%) of benzene is initially converted to muconaldehyde. The percentage was dependent on the properties of TiO2 powders. It was also found that anatase-form powders show higher activity for oxidation of benzene than rutile powders do, whereas rutile-form powders show higher activity for oxidation of phenol than anatase powders do. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据