NDLI: Effect of polymerization/complexation agents molar ratio on structure and catalytic activity of La$_{0.7}$Ba$_{0.3}$Co$_{0.3}$Ni$_{0.7}$O$_{3}$ nanocatalyst in low-temperature CO oxidation

Content Provider	Springer Nature Link
Author	Mohsennia, Mohsen Niknahad, Bahareh Eliassi, Ali
Copyright Year	2017
Abstract	Nano-sized perovskite-type oxides of La$_{0.7}$Ba$_{0.3}$Co$_{x}$Ni$_{1-x}$O$_{3}$ (LBCN) catalysts with x = 0.3, 0.5 and 0.7 were synthesized by polymerized complex method based on the Pechini-type reaction route wherein ethylene glycol and citric acid were used as polymerization/complexation agents. The effects of different ethylene glycol/citric acid molar ratio in the sol–gel process on the structure and catalytic activity of the synthesized La$_{0.7}$Ba$_{0.3}$Co$_{0.3}$Ni$_{0.7}$O$_{3}$, which displayed superior catalytic performance toward CO oxidation, were examined. The structure, component band identification, morphology, reducibility, and specific surface area of the prepared LBCNs were investigated with X-ray diffraction, FT-IR, SEM, H$_{2}$-TPR, and BET, respectively. According to H$_{2}$-TPR results, the shift of reduction peaks of the LBCN nanocatalysts to the lower temperatures indicated that the reduction of Co$^{3+}$ to Co$^{2+}$ can be carried out at the lower temperatures, resulting in the improvement of the redox capacity of LBCNs. The results confirmed superiority of the prepared LBCNs over LaCoO$_{3}$ especially for EG/CA = 5 for the CO oxidation, resulting in achievement of 90% CO oxidation at 180 °C.
Starting Page	458
Ending Page	467
Page Count	10
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	82
Issue Number	2
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2017-03-13
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pechini-type reaction Perovskite-type oxides La$_{0.7}$Ba$_{0.3}$Co$_{0.3}$Ni$_{0.7}$O$_{3}$ CO oxidation Catalytic activity Ceramics, Glass, Composites, Natural Materials Inorganic Chemistry Optical and Electronic Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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