TY - GEN
T1 - Synthesis and characterization of Pd-Zr- and Pd-Rh-Beta zeolite catalysts for removal of emissions from natural gas driven vehicles
AU - Kumar, N.
AU - Klingstedt, F.
AU - Lindfors, L. E.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2000
Y1 - 2000
N2 - The Pd-Zr- and Pd-Rh zeolite catalysts were synthesized and characterized by an x-ray powder diffractometer, a scanning electron microscope, an x-ray fluorescence instrument, a microbalance and nitrogen adsorption. The synthesized catalysts were tested for the removal of emissions from natural gas driven vehicles. The catalysts were hydrothermally aged and tested under similar reaction conditions as those of the fresh catalysts to study the mechanism of catalyst deactivation and its stabilization by zirconium and rhodium. The microbalance was used to study the redox behaviour of the catalysts. The modifications of Pd-Beta zeolite by Zr and Rh were found to stabilize the PdO species in the Beta zeolite structure. The Pd-Zr- and Pd-Rh-Beta zeolite catalysts exhibited high catalytic activity in the removal of NO, CO and unburned methane from natural gas driven vehicles.
AB - The Pd-Zr- and Pd-Rh zeolite catalysts were synthesized and characterized by an x-ray powder diffractometer, a scanning electron microscope, an x-ray fluorescence instrument, a microbalance and nitrogen adsorption. The synthesized catalysts were tested for the removal of emissions from natural gas driven vehicles. The catalysts were hydrothermally aged and tested under similar reaction conditions as those of the fresh catalysts to study the mechanism of catalyst deactivation and its stabilization by zirconium and rhodium. The microbalance was used to study the redox behaviour of the catalysts. The modifications of Pd-Beta zeolite by Zr and Rh were found to stabilize the PdO species in the Beta zeolite structure. The Pd-Zr- and Pd-Rh-Beta zeolite catalysts exhibited high catalytic activity in the removal of NO, CO and unburned methane from natural gas driven vehicles.
UR - http://www.scopus.com/inward/record.url?scp=0034350577&partnerID=8YFLogxK
M3 - Published conference proceeding
AN - SCOPUS:0034350577
SN - 9780444504807
VL - 130 C
T3 - Studies in Surface Science and Catalysis
SP - 2981
EP - 2986
BT - 12th International Congress on Catalysis: Proceedings of the 12th ICC
ER -