The Synthesis of Ce1 – xZrxO2 Oxides in Supercritical Alcohols and Catalysts for Carbon Dioxide Reforming of Methane on Their Basis

M. Yu Smirnova, S. N. Pavlova, T. A. Krieger, Yu N. Bespalko, V. I. Anikeev, Yu A. Chesalov, V. V. Kaichev, N. V. Mezentseva, V. A. Sadykov

Результат исследования: Научные публикации в периодических изданияхстатья

5 Цитирования (Scopus)

Аннотация

The effect of the features of starting zirconium compounds on the solvothermal synthesis of mixed Ce–Zr oxides in a flow reactor using ethanol and isopropanol as a supercritical medium was studied. The phase composition and structural properties of the synthesized samples were investigated using X-ray diffraction analysis (XRD) and Raman spectroscopy. The morphology and textural properties were studied by transmission electron microscopy (TEM) and thermal desorption of nitrogen. It was found that the use of zirconium oxychloride or acetate as the starting substances results in the formation of a mixture of phases enriched with cerium or zirconium, whereas the use of zirconium butoxide with acetylacetone as a complexing agent allows obtaining a homogeneous solid solution. The catalytic properties of the synthesized oxides with supported Ni were tested in methane dry reforming (MDR). The catalyst containing a single-phase oxide synthesized in the presence of acetylacetone exhibited much higher activity, selectivity and coking stability.

Язык оригиналаанглийский
Страницы (с-по)1312-1321
Число страниц10
ЖурналRussian Journal of Physical Chemistry B
Том11
Номер выпуска8
DOI
СостояниеОпубликовано - 1 дек 2017

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