Enhanced properties of Pd/CeO2-nanorods modified with alkaline-earth metals for catalytic oxidation of low-concentration methane. Issue 67 (16th November 2018)

• Record Type: Journal Article
• Authors: Guo, Tianyu; Nie, Xiaorong; Du, Jianping; Li, Jinping
• Is Part Of: RSC advances. Volume 8:Issue 67(2018)
• Page Start: 38641
• Page End: 38647
• Publication Date: 2018-11-16
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra07797e
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A series of Pd/CeO2 -nanorods catalysts modified with alkaline-earth metals were prepared by the incipient impregnation method. 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.