%0 Journal Article %1 WOS:000262672900007 %A Pedrosa, Garrido A M %A Melo, D M A %A Souza, M J B %A Araujo, A S %A Lima, S H %A Melo, M A F %A Sasaki, J M %C 233 SPRING ST, NEW YORK, NY 10013 USA %D 2009 %I SPRINGER/PLENUM PUBLISHERS %J JOURNAL OF CHEMICAL CRYSTALLOGRAPHY %K Raman Rietveld catalysts; method} spectroscopy; {Pt/WOx-ZrO2 %N 3 %P 186-192 %R 10.1007/s10870-008-9454-3 %T Structural and Morphological Characterization of Pt/WOx-ZrO2 Catalysts %V 39 %X 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.

@article{WOS:000262672900007, abstract = {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.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {233 SPRING ST, NEW YORK, NY 10013 USA}, author = {Pedrosa, Garrido A M and Melo, D M A and Souza, M J B and Araujo, A S and Lima, S H and Melo, M A F and Sasaki, J M}, biburl = {https://www.bibsonomy.org/bibtex/2536c71a806f4183f7f78b9baa1243de7/ppgfis_ufc_br}, doi = {10.1007/s10870-008-9454-3}, interhash = {8baba646af3b44086ed5603003de1c90}, intrahash = {536c71a806f4183f7f78b9baa1243de7}, issn = {1074-1542}, journal = {JOURNAL OF CHEMICAL CRYSTALLOGRAPHY}, keywords = {Raman Rietveld catalysts; method} spectroscopy; {Pt/WOx-ZrO2}, number = 3, pages = {186-192}, publisher = {SPRINGER/PLENUM PUBLISHERS}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Structural and Morphological Characterization of Pt/WOx-ZrO2 Catalysts}, tppubtype = {article}, volume = 39, year = 2009 }