Abstract: Mixed nanocrystalline ceria-zirconia oxides doped with praseodymium containing 5, 7.5, 10, and 12.5 wt. % nickel were prepared by the incipient wetness impregnation of the oxide support. Complex physicochemical characterization by X-ray diffraction analysis, ultravioletvisible diffuse reflectance spectroscopy, high resolution transmission electron microscopy and Fourier-transform infrared spectroscopy of adsorbed CO revealed that the nickel-containing samples are comprised of a solid solution of praseodymium, cerium and zirconium oxides with the fluorite structure as well as nickel oxide particles with a size up to 100 nm. All prepared nanocomposite catalysts show a high catalytic activity in the water-gas shift reaction. The optimum content of nickel in the catalyst providing the maximum activity was found to be 10 wt. %. A high oxygen mobility in these catalysts estimated by the temperature-programmed oxygen isotope heteroexchange with C18O2 provides required coking stability. To eliminate local overheating of the catalyst and decrease the pressure drop in the reactor, as required for further up-scaling, the active component was supported on a metal plate made of Ni-Al foam alloy. At a fixed contact time, the same level of CO conversion with a fraction of the active component was achieved with an approximately 50 wt% loading on the support.

Cite: Larina T.V. , Fedorova Y.E. , Krieger T.A. , Ishchenko A.V. , Glazneva T.S. , Sadovskaya E.M. , Eremeev N.F. , Sadykov V.A.
Synthesis, Physicochemical and Catalytic Properties of Ni/PrCeZrO Catalysts for Water-Gas Shift Reaction
Catalysis for Sustainable Energy. 2017. V.4. N1. P.73-82. DOI: 10.1515/cse-2017-0012 РИНЦ AN OpenAlex

Files: Full text from publisher

Dates:

Submitted:	Dec 13, 2017
Accepted:	Dec 15, 2017
Published print:	Dec 20, 2017
Published online:	Dec 29, 2017

Identifiers:

Elibrary:	44657202
Chemical Abstracts:	2019:741883
OpenAlex:	W2791112781

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Elibrary	4
OpenAlex	3

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