Аннотация
Catalysts of Pt/WOx-ZrO2 type with 1 wt% of Pt and 10, 15 and 20 wt%
of tungsten were synthesized and characterized. The structural and
morphological features of these catalysts were studied. The samples were
synthesized by impregnation method and calcined at 600 degrees C, 700
degrees C and 800 degrees C. The characterizations were carried out
using different techniques: X-ray diffraction, Raman spectroscopy,
scanning electronic microscopy, nitrogen adsorption measurement and
refinement of their crystalline structures by Rietveld method. X-ray
diffraction patterns revealed the formation ZrO2 and WO3 crystalline
structures and its crystallite size were determined. The zirconium oxide
crystallized into tetragonal and monoclinic phases and tungsten trioxide
crystallized into monoclinic phase. Crystalline WO3 and amorphous WOx
species were detected by Raman spectra.
Пользователи данного ресурса
Пожалуйста,
войдите в систему, чтобы принять участие в дискуссии (добавить собственные рецензию, или комментарий)