Catalytic wet oxidation of aniline over Ru catalysts supported on a modified TiO2

doi:10.1016/S1872-2067(17)62848-1

Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (7): 1155-1165.DOI: 10.1016/S1872-2067(17)62848-1

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Catalytic wet oxidation of aniline over Ru catalysts supported on a modified TiO₂

Mingguang Song, Yunsong Wang, Yun Guo, Li Wang, Wangcheng Zhan, Yanglong Guo, Guanzhong Lu

Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China

Online:2017-07-18 Published:2017-06-27
Contact: 10.1016/S1872-2067(17)62848-1
Supported by:
This work was financially supported by the National Natural Science Foundation of China (21333003, 21577034), National Basic Research Program of China (2013CB933200), National High Technology Research and Development Program of China (2015AA034603), and the Fundamental Research Funds for the Central Universities (WJ1514020).

Abstract

Abstract:

The catalytic wet air oxidation of aniline over Ru catalysts supported on modified TiO₂ (TiO₂, Ti_0.9Ce_0.1O₂, Ti_0.9Zr_0.1O₂) is investigated. A series of characterization techniques are conducted to determine the relationship between the physico-chemical properties and the catalytic performance. As a result of the good metal dispersion and large number of surface oxygen species, the Ru/Ti_0.9Zr_0.1O₂ catalyst presents the best catalytic activity among the tested samples. The effects of the operating conditions on the reaction are investigated and the optimal reaction conditions are determined. Based on the relationship between the by-products concentration and the reaction time, the reaction path for the catalytic oxidation of aniline is established. Carbonaceous deposits on the surface of the support are known to be the main reason for catalyst deactivation. The catalysts maintain a constant activity even after three consecutive cycles.

Key words: Catalystic wet air oxidation, Physico-chemical, Aniline removal, Carbon deposites

Mingguang Song, Yunsong Wang, Yun Guo, Li Wang, Wangcheng Zhan, Yanglong Guo, Guanzhong Lu. Catalytic wet oxidation of aniline over Ru catalysts supported on a modified TiO₂[J]. Chinese Journal of Catalysis, 2017, 38(7): 1155-1165.

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Catalytic wet oxidation of aniline over Ru catalysts supported on a modified TiO₂

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