Issue 101, 2016
From the journal:

RSC Advances

Low-temperature catalytic oxidation of vinyl chloride over Ru modified Co3O4 catalysts

Chao Wang, ORCID logo ab   Chuanhui Zhang,ab   Wenchao Hua,a   Yanglong Guo,*a   Guanzhong Lu,a   Sonia Gilb  and  Anne Giroir-Fendler*b  

* Corresponding authors

a Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, P. R. China
E-mail: ylguo@ecust.edu.cn

b Institut de recherches sur la catalyse et l'environnement de Lyon, UMR 5256-CNRS, Université Lyon 1, 2 avenue Albert Einstein, 69626 Villeurbanne Cedex, France
E-mail: anne.giroir-fendler@ircelyon.univ-lyon1.fr

Abstract

Ruthenium modified cobalt oxides were prepared by (1) impregnating ruthenium chloride hydrate on cobalt oxides, Ru-supported catalysts (Ru/Co3O4), and (2) Ru-doped catalysts (Ru–Co3O4) where the ruthenium ions were added to the precursor solution, by a one-step sol–gel method with cobalt nitrate. The physicochemical properties of the catalysts were characterized by ICP, BET, XRD, HR-TEM, TPR, and XPS analysis. The effects of ruthenium were studied for the total oxidation of vinyl chloride. This Ru modifier was observed to enhance oxygenate formation. The different preparation methods made contributions to the different amounts of Ru4+ on the surfaces of the catalysts while Ru4+ would be in synergy with Co2+ concentration, and this also changed the chemical coordination of oxygen on the surface. Dispersion of Ru oxides on the cobalt oxides surface could not only improve the catalytic activity and stability on steam, but also decrease the amount of chlorinated by-products and increase HCl selectivity.

Graphical abstract: Low-temperature catalytic oxidation of vinyl chloride over Ru modified Co3O4 catalysts

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Article information

DOI
https://doi.org/10.1039/C6RA18503G
Article type
Paper
Submitted
20 Jul 2016
Accepted
03 Oct 2016
First published
10 Oct 2016

RSC Adv., 2016,6, 99577-99585

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Low-temperature catalytic oxidation of vinyl chloride over Ru modified Co3O4 catalysts

C. Wang, C. Zhang, W. Hua, Y. Guo, G. Lu, S. Gil and A. Giroir-Fendler, RSC Adv., 2016, 6, 99577 DOI: 10.1039/C6RA18503G

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