Shape dependence of nanoceria on complete catalytic oxidation of o-xylene
Wang, L; Wang, YF; Zhang, Y; Yu, YB; He, H; Qin, XB; Wang, BY; Qin XB(秦秀波); Wang BY(王宝义)
刊名CATALYSIS SCIENCE & TECHNOLOGY
2016
卷号6期号:13页码:4840
DOI10.1039/c6cy00180g
文章类型期刊论文
英文摘要BTX (benzene, toluene, and xylene) in atmosphere, mainly emitted from various industrial processes and transportation activities, are of particular concern due to their potentially highly toxic effects on human health. Catalytic oxidation of o-xylene was investigated on nanosized CeO2 particles, cubes, and rods, among which rods show the highest activity, which is comparable with those of traditional noble-metal catalysts. CeO2 nanorods also exhibit long durability for o-xylene oxidation, without deactivation during a 50 h time-on stream test. Over the CeO2 rods and particles, the presence of water vapor slightly decreased o-xylene conversion, while water vapor enhanced o-xylene oxidation on the CeO2 cubes. High-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, positron annihilation spectroscopy, and O-2 temperature-programmed desorption measurements revealed that ceria rods enclosed by (111) and (100) facets exhibit the highest concentration of oxygen vacancy clusters (VCs), the presence of which promoted the adsorption of molecular oxygen. The lower the temperature for desorption of chemisorbed O-2 species is, the higher is the activity for o-xylene oxidation, identifying the key role of VCs in t(h)is reaction via the activation of molecular oxygen over nanoceria. The finding may also be fundamental for designing ceria-based catalysts with better performance for catalytic oxidation of volatile organic compounds.
类目[WOS]Chemistry, Physical
关键词[WOS]VOLATILE ORGANIC-COMPOUNDS ; DEFINED SURFACE PLANES ; PROBING DEFECT SITES ; AROMATIC-HYDROCARBONS ; METAL-OXIDE ; TOLUENE OXIDATION ; CEO2 NANOCRYSTALS ; OXYGEN VACANCIES ; LOW-TEMPERATURES ; CARBON-MONOXIDE
WOS记录号WOS:000378734700024
引用统计
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260508
专题中国科学院高能物理研究所_核技术应用研究中心_期刊论文
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Wang, L,Wang, YF,Zhang, Y,et al. Shape dependence of nanoceria on complete catalytic oxidation of o-xylene[J]. CATALYSIS SCIENCE & TECHNOLOGY,2016,6(13):4840.
APA Wang, L.,Wang, YF.,Zhang, Y.,Yu, YB.,He, H.,...&王宝义.(2016).Shape dependence of nanoceria on complete catalytic oxidation of o-xylene.CATALYSIS SCIENCE & TECHNOLOGY,6(13),4840.
MLA Wang, L,et al."Shape dependence of nanoceria on complete catalytic oxidation of o-xylene".CATALYSIS SCIENCE & TECHNOLOGY 6.13(2016):4840.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
20160468.pdf(2719KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wang, L]的文章
[Wang, YF]的文章
[Zhang, Y]的文章
百度学术
百度学术中相似的文章
[Wang, L]的文章
[Wang, YF]的文章
[Zhang, Y]的文章
必应学术
必应学术中相似的文章
[Wang, L]的文章
[Wang, YF]的文章
[Zhang, Y]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 20160468.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。