Oxidación catalítica de etanol sobre catalizadores MnCu/ZrO2x y MnCu/TiO2x

MORALES MARIA ROXANA; BARBERO BIBIANA P; LOPEZ G. TESSY; MORENO ALBINO; CADUS LUIS E.

La Plata

Congreso; XV CONGRESO ARGENTINO DE CATÁLISIS, 4º CONGRESO DE CATALISIS DEL MERCOSUR; 2007

Universidad Nacional de La Plata-CONICET

MnCu/ZrO2x and MnCu/TiO2 x catalysts were prepared by the sol-gel method with a relationship Mn:Cu = 5:1 and calcined at different temp eratures: 400, 600 and 800ºC. The samples were characterized by XRD, SSA, FT-IR and TPR techniques, with the purpose of determining the physiochemical and structural states of them. It was observed that the increase of the calcination temperature caused the segregation of phases and also an increase in the cristallinity of them, for both groups of catalysts. For the catalysts calcined at low temperatures (MnCu/ZrO2 400, MnCu/TiO2 400 and MnCu/ZrO2 600) the amorphous state of the support detected by XRD, lead to the dispersion of the active phase, since diffraction lines corresponding to Mn and Cu were not detected. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. MnCu/ZrO2 600) the amorphous state of the support detected by XRD, lead to the dispersion of the active phase, since diffraction lines corresponding to Mn and Cu were not detected. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. Mn:Cu = 5:1 and calcined at different temp eratures: 400, 600 and 800ºC. The samples were characterized by XRD, SSA, FT-IR and TPR techniques, with the purpose of determining the physiochemical and structural states of them. It was observed that the increase of the calcination temperature caused the segregation of phases and also an increase in the cristallinity of them, for both groups of catalysts. For the catalysts calcined at low temperatures (MnCu/ZrO2 400, MnCu/TiO2 400 and MnCu/ZrO2 600) the amorphous state of the support detected by XRD, lead to the dispersion of the active phase, since diffraction lines corresponding to Mn and Cu were not detected. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. MnCu/ZrO2 600) the amorphous state of the support detected by XRD, lead to the dispersion of the active phase, since diffraction lines corresponding to Mn and Cu were not detected. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. 2x and MnCu/TiO2 x catalysts were prepared by the sol-gel method with a relationship Mn:Cu = 5:1 and calcined at different temp eratures: 400, 600 and 800ºC. The samples were characterized by XRD, SSA, FT-IR and TPR techniques, with the purpose of determining the physiochemical and structural states of them. It was observed that the increase of the calcination temperature caused the segregation of phases and also an increase in the cristallinity of them, for both groups of catalysts. For the catalysts calcined at low temperatures (MnCu/ZrO2 400, MnCu/TiO2 400 and MnCu/ZrO2 600) the amorphous state of the support detected by XRD, lead to the dispersion of the active phase, since diffraction lines corresponding to Mn and Cu were not detected. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. MnCu/ZrO2 600) the amorphous state of the support detected by XRD, lead to the dispersion of the active phase, since diffraction lines corresponding to Mn and Cu were not detected. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. 2 400, MnCu/TiO2 400 and MnCu/ZrO2 600) the amorphous state of the support detected by XRD, lead to the dispersion of the active phase, since diffraction lines corresponding to Mn and Cu were not detected. The catalytic activity was evaluated in total oxidation of ethanol, considered as model molecule of VOC. The MnCu/TiO2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. 2 400 and MnCu/ZrO2 600 catalysts showed the best catalytic performance, which was associated to the great dispersion of the active phase. The catalytic behaviour of the MnCu/ZrO2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support. catalyst, that which was attributed to the type "p" semiconductor nature of the support. 2 600 presented a slight improvement compared with the other catalyst, that which was attributed to the type "p" semiconductor nature of the support.