Enhanced properties of Pd/CeO2-nanorods modified with alkaline-earth metals for catalytic oxidation of low-concentration methane

Tianyu Guo; Xiaorong Nie; Jianping Du; Jinping Li

doi:10.1039/C8RA07797E

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Enhanced properties of Pd/CeO₂-nanorods modified with alkaline-earth metals for catalytic oxidation of low-concentration methane†

Tianyu Guo,‡^ab Xiaorong Nie,‡^c Jianping Du*^bc and Jinping Li

*^bd

Author affiliations

* Corresponding authors

^a College of Environmental Science and Engineering, Taiyuan University of Technology, 030024 Shanxi, PR China

^b Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, 030024 Shanxi, PR China
E-mail: dujp518@163.com, jpli211@hotmail.com

^c College of Chemistry and Chemical Engineering, Taiyuan University of Technology, 030024 Shanxi, PR China

^d Research Institute of Special Chemicals, Taiyuan University of Technology, 030024 Shanxi, PR China

Abstract

A series of Pd/CeO₂-nanorods catalysts modified with alkaline-earth metals were prepared by the incipient impregnation method. Their catalytic properties in low-concentration methane oxidation were also investigated. The catalysts were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and H₂-temperature-programmed reduction techniques. The catalytic results show that the Ca element doped in Pd/CeO₂, with optimum molar ratio of Pd to Ca of 2 and calcination temperature of 450 °C, improved the properties of the Pd-based catalyst remarkably, which is attributed to strong Pd–support interaction and high oxygen mobility. Therefore, calcium is more suitable as a promoter for enhancing the activities of the Pd/CeO₂ catalyst in methane oxidation.

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Article information

DOI: https://doi.org/10.1039/C8RA07797E
Article type: Paper
Submitted: 19 Sep 2018
Accepted: 29 Oct 2018
First published: 16 Nov 2018
This article is Open Access

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RSC Adv., 2018,8, 38641-38647

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Enhanced properties of Pd/CeO₂-nanorods modified with alkaline-earth metals for catalytic oxidation of low-concentration methane

T. Guo, X. Nie, J. Du and J. Li, RSC Adv., 2018, 8, 38641 DOI: 10.1039/C8RA07797E

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