Back to Search Start Over

Tuning SnO2Surface Area for Catalytic Toluene Deep Oxidation: On the Inherent Factors Determining the Reactivity

Authors :
Liu, Yaqian
Liu, Yang
Guo, Yao
Xu, Junwei
Xu, Xianglan
Fang, Xiuzhong
Liu, Jianjun
Chen, Weifan
Arandiyan, Hamidreza
Wang, Xiang
Source :
Industrial & Engineering Chemistry Research; October 2018, Vol. 57 Issue: 42 p14052-14063, 12p
Publication Year :
2018

Abstract

To understand the fundamental aspects of SnO2catalytic materials and develop applicable catalysts for VOCs combustion, SnO2samples possessing stable and varied surface areas are controllably constructed and applied to toluene deep oxidation. By improving SnO2surface area, the Sn4+cation exposure is improved, thus increasing its surface acidity, which benefits toluene molecule adsorption and activation. Furthermore, more surface defects can be generated, hence inducing the generation of more abundant surface active oxygen sites, which is favorable for further oxidizing the adsorbed and activated toluene intermediates. Therefore, the intrinsic activity of SnO2is eventually promoted. The coexistence of both kinds of active sites is crucial for the reaction, and the concerted interaction between them controls the reaction performance. Catalysts with good activity, superior stability, and potent water vapor tolerance can be achieved by controllably constructing SnO2possessing large and stable surface areas, and supporting less amount of Pd onto it.

Details

Language :
English
ISSN :
08885885 and 15205045
Volume :
57
Issue :
42
Database :
Supplemental Index
Journal :
Industrial & Engineering Chemistry Research
Publication Type :
Periodical
Accession number :
ejs46632496
Full Text :
https://doi.org/10.1021/acs.iecr.8b03401