RT Journal Article
T1 Reduction of Typical Diesel NOx Emissions by SCR-NH3 Using Metal-Exchanged Natural Zeolite and SBA-15 Catalysts.
A1 Alcantara, P.M.P.
A1 Moura de Oliveira, Mona Lisa
A1 Santiago de Araújo, Jesuína Cássia
A1 Dos Santos Araújo, Rinaldo
A1 Chaves de Lima, Rita Karolinny
A1 Bueno, André Valente
A1 Vieira da Silva, Maria Eugênia
A1 Costa Rocha, Paulo Alexandre
A1 Rodríguez-Castellón, Enrique
K1 Aire - Contaminación
K1 Combustibles fósiles
AB In this work, the catalytic performance of clinoptilolite (CLIN) and SBA-15 catalysts,doped with Fe and Cu, was evaluated in the selective catalytic reduction of NO using NH3 as areducing agent (SCR-NH3). Both Cu-CLIN and Fe-CLIN were obtained by ion-exchange usingnatural clinoptilolite zeolite originating from the Hrabovec deposit (northeast Slovakia region). Cu-SBA-15 and Fe-SBA-15 were prepared by impregnation into SBA-15 mesoporous synthesized silica.Standard catalytic activity tests were carried out on a bench-scale laboratory apparatus using areaction mixture of a standard test. GHSV of 48,000 h􀀀1 was adopted based on the space velocity of areal NH3-SCR catalyst for diesel vehicles (100–550  C). All Cu-doped samples showed better NOconversion values than Fe-doped samples. Clinoptilolite catalysts were more active than those basedon SBA-15. Maximum NO conversions of about 96% were observed for Cu-CLIN and Fe-CLIN at350–400  C, respectively. Moreover, Fe-CLIN also showed higher stability in the presence of SO2 andwater steam at 350  C. These results demonstrate the potential of metal-doped natural clinoptilolite tobe used as cost-effective catalysts applied to the abatement of NOx emissions generated in automotivecombustion processes.
PB MDPI
YR 2023
FD 2023-06-30
LK https://hdl.handle.net/10630/32519
UL https://hdl.handle.net/10630/32519
LA eng
NO Alcantara, A.P.M.P.; Moura de Oliveira, M.L.; Santiago de Araújo, J.C.; dos Santos Araújo, R.; Chaves de Lima, R.K.; Bueno, A.V.; Vieira da Silva, M.E.; Costa Rocha, P.A.; Rodríguez-Castellón, E. Reduction of Typical Diesel NOx Emissions by SCR-NH3 Using Metal-Exchanged Natural Zeolite and SBA-15 Catalysts. Air 2023, 1, 159–174. https:// doi.org/10.3390/air1030012
NO Partial funding for open access charge: Universidad de Málaga
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 22 ene 2026