The catalytic behavior of a series of cobalt catalysts supported on zirconia in the selective catalytic reduction (SCR) of NO has been studied using propane as reducing agent. The catalysts were characterized by Raman Spectroscopy, Temperature Programmed Reduction (TPR), Diffuse Reflectance Spectroscopy UV-Vis (DRS) and X-ray Photoelectron Spectroscopy (XPS) to assess the physicochemical properties of cobalt species. Results for SCR of NO indicate that the activity is substantially related to the cobalt concentration and consequent nature of supported cobalt species. The formation of segregated oxidic phases on the catalytic surface produces an activity decrease. The most active catalyst contains Co(II) ions, interacting with the support, in tetrahedral coordination.
Cobalt Supported on Zirconia. Selective Catalytic Reduction of NO Using Propane as Reducing Agent / Marco, Ocsachoque; Gazzoli, Delia; Irma, Botto; Delia, Soria; Aida, Villad; Maria, Gonzalez; Esther, Ponzi; Ileana, Lick. - In: CURRENT CATALYSIS. - ISSN 2211-5447. - STAMPA. - 3:2(2014), pp. 179-186. [10.2174/2211544702666131224231624]
Cobalt Supported on Zirconia. Selective Catalytic Reduction of NO Using Propane as Reducing Agent
GAZZOLI, DELIA;
2014
Abstract
The catalytic behavior of a series of cobalt catalysts supported on zirconia in the selective catalytic reduction (SCR) of NO has been studied using propane as reducing agent. The catalysts were characterized by Raman Spectroscopy, Temperature Programmed Reduction (TPR), Diffuse Reflectance Spectroscopy UV-Vis (DRS) and X-ray Photoelectron Spectroscopy (XPS) to assess the physicochemical properties of cobalt species. Results for SCR of NO indicate that the activity is substantially related to the cobalt concentration and consequent nature of supported cobalt species. The formation of segregated oxidic phases on the catalytic surface produces an activity decrease. The most active catalyst contains Co(II) ions, interacting with the support, in tetrahedral coordination.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.