CO Oxidation Performance over SnO<sub>2</sub> Nanoparticles Prepared with Hydrothermal Method

化学工业与工程

Chemcial Industry and Engineering

2017, Vol. 34

Issue (5) :19-24 DOI: 10.13353/j.issn.1004.9533.20161038

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CO Oxidation Performance over SnO₂ Nanoparticles Prepared with Hydrothermal Method

Chai Shujing, Li Jing, Bai Xueqin, Li Xingang

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, China

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Abstract

In order to solve the serious problem of CO pollution, nano SnO₂ catalyst was prepared with hydrothermal method. CTAB was introduced as a surfactant in the process. The morphology structure and oxidation reduction abilities of SnO₂ were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), N₂ adsorption (BET), thermogravimetric analysis (TGA) and temperature programmed H₂ reduction (H₂-TPR), and CO oxidation activities were measured, as well. Our results show that the as-prepared SnO₂ nano-particles have higher specific surface area, uniform particle size and distribution, a higher surface Sn⁴⁺concentration than that of the conventional SnO₂catalyst prepared with precipitation method. Results show that the nano-SnO₂ catalysts possess higher activity for CO oxidation, and its E_a decreased from 61.3 to 54.2 kJ·mol^-1, as compared with the SnO₂catalyst prepared with precipitation method.

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	Chai Shujing
	Li Jing
	Bai Xueqin
	Li Xingang

Keywords： hydrothermal method； SnO₂； nano particles； CO oxidation

Received 2016-03-21;

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Chai Shujing, Li Jing, Bai Xueqin, Li Xingang.CO Oxidation Performance over SnO₂ Nanoparticles Prepared with Hydrothermal Method[J] Chemcial Industry and Engineering, 2017,V34(5): 19-24

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