Kinetics of catalytic oxidation of ethylene over palladium oxide

Y. X. Xin; B. Yang; H. Wang; S. L. Anderson; Chung King Law

doi:10.1016/j.proci.2014.06.094

Kinetics of catalytic oxidation of ethylene over palladium oxide

Y. X. Xin, B. Yang, H. Wang, S. L. Anderson, Chung King Law

Research output: Contribution to journal › Conference article › peer-review

14 Scopus citations

Abstract

Catalytic oxidation of ethylene was experimentally studied by wire microcalorimetry and mass spectrometry over the temperature range of 400-800 K at atmospheric pressure. The catalyst is a palladium oxide (PdO) surface on a polycrystalline palladium wire. For mixtures containing 0.3-0.6% C₂H₄ and 3.75% O₂ in N₂, the heat release rate as well as the mole fractions of gas-phase species were identified. Experimental observation revealed the temperature-dependent channels for the C₂H₄ oxidation, with mixed H₂ release and H₂O production below 580 K and complete oxidation to CO₂ and H₂O above 600 K. Analysis of the global reaction kinetics shows that for 620 ≤ T (K) ≤ 740 K the surface catalytic reaction rate is the first order in ethylene concentration and has an activation energy of 48.2± 1.4 kJ/mol. A surface chemistry model is proposed and the dissociative adsorption rate constant of C₂H₄ on PdO surface was determined by fitting the experimental data.

Original language	English (US)
Pages (from-to)	2233-2240
Number of pages	8
Journal	Proceedings of the Combustion Institute
Volume	35
Issue number	2
DOIs	https://doi.org/10.1016/j.proci.2014.06.094
State	Published - 2015
Event	30th International Symposium on Combustion - Chicago, IL, United States Duration: Jul 25 2004 → Jul 30 2004

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Mechanical Engineering
Physical and Theoretical Chemistry

Keywords

Catalytic oxidation
Ethylene combustion
Pd-based catalyst
Surface chemistry

Access to Document

10.1016/j.proci.2014.06.094

Cite this

@article{7fe93aa033094f66aeae093f3da7506f,

title = "Kinetics of catalytic oxidation of ethylene over palladium oxide",

abstract = "Catalytic oxidation of ethylene was experimentally studied by wire microcalorimetry and mass spectrometry over the temperature range of 400-800 K at atmospheric pressure. The catalyst is a palladium oxide (PdO) surface on a polycrystalline palladium wire. For mixtures containing 0.3-0.6% C2H4 and 3.75% O2 in N2, the heat release rate as well as the mole fractions of gas-phase species were identified. Experimental observation revealed the temperature-dependent channels for the C2H4 oxidation, with mixed H2 release and H2O production below 580 K and complete oxidation to CO2 and H2O above 600 K. Analysis of the global reaction kinetics shows that for 620 ≤ T (K) ≤ 740 K the surface catalytic reaction rate is the first order in ethylene concentration and has an activation energy of 48.2± 1.4 kJ/mol. A surface chemistry model is proposed and the dissociative adsorption rate constant of C2H4 on PdO surface was determined by fitting the experimental data.",

keywords = "Catalytic oxidation, Ethylene combustion, Pd-based catalyst, Surface chemistry",

author = "Xin, {Y. X.} and B. Yang and H. Wang and Anderson, {S. L.} and Law, {Chung King}",

note = "Publisher Copyright: {\textcopyright} 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.; 30th International Symposium on Combustion ; Conference date: 25-07-2004 Through 30-07-2004",

year = "2015",

doi = "10.1016/j.proci.2014.06.094",

language = "English (US)",

volume = "35",

pages = "2233--2240",

journal = "Proceedings of the Combustion Institute",

issn = "1540-7489",

publisher = "Elsevier Ltd",

number = "2",

}

TY - JOUR

T1 - Kinetics of catalytic oxidation of ethylene over palladium oxide

AU - Xin, Y. X.

AU - Yang, B.

AU - Wang, H.

AU - Anderson, S. L.

AU - Law, Chung King

PY - 2015

Y1 - 2015

N2 - Catalytic oxidation of ethylene was experimentally studied by wire microcalorimetry and mass spectrometry over the temperature range of 400-800 K at atmospheric pressure. The catalyst is a palladium oxide (PdO) surface on a polycrystalline palladium wire. For mixtures containing 0.3-0.6% C2H4 and 3.75% O2 in N2, the heat release rate as well as the mole fractions of gas-phase species were identified. Experimental observation revealed the temperature-dependent channels for the C2H4 oxidation, with mixed H2 release and H2O production below 580 K and complete oxidation to CO2 and H2O above 600 K. Analysis of the global reaction kinetics shows that for 620 ≤ T (K) ≤ 740 K the surface catalytic reaction rate is the first order in ethylene concentration and has an activation energy of 48.2± 1.4 kJ/mol. A surface chemistry model is proposed and the dissociative adsorption rate constant of C2H4 on PdO surface was determined by fitting the experimental data.

AB - Catalytic oxidation of ethylene was experimentally studied by wire microcalorimetry and mass spectrometry over the temperature range of 400-800 K at atmospheric pressure. The catalyst is a palladium oxide (PdO) surface on a polycrystalline palladium wire. For mixtures containing 0.3-0.6% C2H4 and 3.75% O2 in N2, the heat release rate as well as the mole fractions of gas-phase species were identified. Experimental observation revealed the temperature-dependent channels for the C2H4 oxidation, with mixed H2 release and H2O production below 580 K and complete oxidation to CO2 and H2O above 600 K. Analysis of the global reaction kinetics shows that for 620 ≤ T (K) ≤ 740 K the surface catalytic reaction rate is the first order in ethylene concentration and has an activation energy of 48.2± 1.4 kJ/mol. A surface chemistry model is proposed and the dissociative adsorption rate constant of C2H4 on PdO surface was determined by fitting the experimental data.

KW - Catalytic oxidation

KW - Ethylene combustion

KW - Pd-based catalyst

KW - Surface chemistry

UR - http://www.scopus.com/inward/record.url?scp=84964307428&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84964307428&partnerID=8YFLogxK

U2 - 10.1016/j.proci.2014.06.094

DO - 10.1016/j.proci.2014.06.094

M3 - Conference article

AN - SCOPUS:84964307428

SN - 1540-7489

VL - 35

SP - 2233

EP - 2240

JO - Proceedings of the Combustion Institute

JF - Proceedings of the Combustion Institute

IS - 2

T2 - 30th International Symposium on Combustion

Y2 - 25 July 2004 through 30 July 2004

ER -

Kinetics of catalytic oxidation of ethylene over palladium oxide

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this