CO oxidation over Pd/ZrO2 catalysts: Role of support's donor sites

Aleksey A. Vedyagin, Alexander M. Volodin, Roman M. Kenzhin, Vladimir V. Chesnokov, Ilya V. Mishakov

Результат исследований: Материалы для журналаСтатья

18 Цитирования (Scopus)

Аннотация

A series of supported Pd/ZrO2 catalysts with Pd loading from 0.2 to 2 wt % was synthesized. The ZrO2 material prepared by a similar technique was used as a reference sample. The samples have been characterized by means of transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), testing reaction of ethane hydrogenolysis (HGE), N2 adsorption, and electron paramagnetic resonance (EPR) spectroscopy. 1,3,5-trinitrobenzene was used as a probe molecule for the EPR spin probe method. The catalytic performance of samples was tested in the model reaction of CO oxidation. It was shown that the concentration of donor sites of support measured by EPR spin probe correlates with catalytic behavior during light-off tests. Low concentration of donor sites on a support's surface was found to be caused by the presence of the specific surface defects that are related to existence of coordinately unsaturated structures.

Язык оригиналаАнглийский
Номер статьи1289
ЖурналMolecules
Том21
Номер выпуска10
DOI
СостояниеОпубликовано - 1 окт 2016

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ASJC Scopus subject areas

  • Medicine(all)
  • Organic Chemistry

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