NDLI: Enhanced CO and Soot Oxidation Activity Over Y-Doped Ceria–Zirconia and Ceria

Content Provider	Springer Nature Link
Author	Devaiah, D. Tsuzuki, T. Aniz, C. U. Reddy, B. M.
Copyright Year	2015
Abstract	Y-doped ceria–zirconia (Ce0.8Zr0.12Y0.08O2−δ, CZY) and ceria–lanthana (Ce0.8La0.12Y0.08O2−δ, CLY) ternary oxide solid solutions were synthesized by a facile coprecipitation method. Structural, textural, redox, and morphological properties of the synthesized samples were investigated by means of X-ray diffraction (XRD), inductively coupled plasma-optical emission spectroscopy (ICP–OES), Raman spectroscopy (RS), UV–visible diffuse reflectance spectroscopy (UV–vis DRS), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction by hydrogen (H2-TPR), high resolution transmission electron microscopy (HRTEM), and Brunauer–Emmett–Teller surface area (BET SA) techniques. The formation of ternary oxide solid solutions was confirmed from XRD, RS, and UV–vis DRS results. ICP–OES analysis confirmed the elemental composition in the ternary oxide solid solutions. HRTEM images revealed irregular morphology of the samples. RS, UV–vis DRS, and XPS results indicated enhanced oxygen vacancies in the Y doped samples. H2-TPR profiles confirmed a facile reduction of CZY and CLY samples at lower temperatures. BET analysis revealed an enhanced surface area for CZY and CLY samples than the respective CZ and CL undoped mixed oxides. All these factors contributed to a better CO and soot oxidation performance of CZY and CLY samples. Particularly, the CLY sample exhibited highest catalytic activity among the various samples investigated.
Starting Page	1206
Ending Page	1216
Page Count	11
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	145
Issue Number	5
e-ISSN	1572879X
Language	English
Publisher	Springer US
Publisher Date	2015-03-12
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ternary oxides Solid solutions Oxygen vacancies CO oxidation Soot oxidation Catalysis Industrial Chemistry/Chemical Engineering Organometallic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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