Synthesis and characterization of Pd-Zr- and Pd-Rh-Beta zeolite catalysts for removal of emissions from natural gas driven vehicles

N. Kumar; F. Klingstedt; L. E. Lindfors

Synthesis and characterization of Pd-Zr- and Pd-Rh-Beta zeolite catalysts for removal of emissions from natural gas driven vehicles

N. Kumar^*, F. Klingstedt, L. E. Lindfors

^*Corresponding author for this work

Laboratory of Industrial Chemistry and Reaction Engineering

Research output: Chapter in Book/Conference proceeding › Conference contribution › Scientific › peer-review

10 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	12th International Congress on Catalysis: Proceedings of the 12th ICC
Pages	2981-2986
Number of pages	6
Volume	130 C
Publication status	Published - 2000
MoE publication type	A4 Article in a conference publication

Publication series

Name	Studies in Surface Science and Catalysis
ISSN (Print)	0167-2991

Cite this

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title = "Synthesis and characterization of Pd-Zr- and Pd-Rh-Beta zeolite catalysts for removal of emissions from natural gas driven vehicles",

abstract = "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.",

author = "N. Kumar and F. Klingstedt and Lindfors, {L. E.}",

year = "2000",

language = "English",

isbn = "9780444504807",

volume = "130 C",

series = "Studies in Surface Science and Catalysis",

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booktitle = "12th International Congress on Catalysis: Proceedings of the 12th ICC",

}

Synthesis and characterization of Pd-Zr- and Pd-Rh-Beta zeolite catalysts for removal of emissions from natural gas driven vehicles. / Kumar, N.; Klingstedt, F.; Lindfors, L. E.
12th International Congress on Catalysis: Proceedings of the 12th ICC. Vol. 130 C 2000. p. 2981-2986 (Studies in Surface Science and Catalysis).

Research output: Chapter in Book/Conference proceeding › Conference contribution › Scientific › peer-review

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.

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 - Conference contribution

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 -

Synthesis and characterization of Pd-Zr- and Pd-Rh-Beta zeolite catalysts for removal of emissions from natural gas driven vehicles

Abstract

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