Evaluation and characterization of Mn-Cu mixed oxide catalyst supported on TiO2 and ZrO2 for ethanol total oxidation.

M.R. MORALES; B. P. BARBERO; L.E. CADÚS

FUEL

ELSEVIER SCI LTD

Año: 2009 vol. 88 p. 2122 - 2129

0016-2361

MnCu/ZrO2 T and MnCu/TiO2 T (T = calcination temperature) catalysts were prepared by the sol–gel method with a Mn:Cu = 5:1 ratio and calcined at different temperatures, T = 673, 873 and 1073 K. The samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. method with a Mn:Cu = 5:1 ratio and calcined at different temperatures, T = 673, 873 and 1073 K. The samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. 2 T and MnCu/TiO2 T (T = calcination temperature) catalysts were prepared by the sol–gel method with a Mn:Cu = 5:1 ratio and calcined at different temperatures, T = 673, 873 and 1073 K. The samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. T = 673, 873 and 1073 K. The samples were characterized by X-ray diffraction, measurement of specific surface area, temperature programmed reduction, XPS and FT-IR spectroscopy. For both groups of catalysts, the increase of calcination temperature produced three effects: the segregation of phases, an increase of the crystallinity, and a phase transformation of the support. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. 2 673 and MnCu/ZrO2 873 catalysts showed the best catalytic performance, which was associated with the high dispersion of the MnOx and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area. x and CuOx active phases. The catalytic activity of MnCu/TiO2 673 catalyst was also favored by its high surface area.2 673 catalyst was also favored by its high surface area.