Analysis of oxygen permeation through dense ceramic membranes with chemical reactions of finite rate

Zebao Rui, Yongdan Li, Jerry Lin

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The oxygen permeation through oxygen ionic or mixed-conducting ceramic membranes under reaction conditions was examined with a model taking into account of different electrical transport mechanisms (p-type and n-type transports) and finite reaction rate. It was demonstrated that with a reaction consuming oxygen in one side of the membrane, the oxygen partial pressure in the reaction side decreases and the oxygen permeation flux increases with the increase in the reaction rate for both the p-type and the n-type transport dominated mechanism. The increase in reaction rate causes a transition of the transport mechanism from p-type to n-type. This transition leads to an increase in the permeation flux by up to 30 times. This effect offers one explanation for the large discrepancies in published permeation data for membrane reactors of partial oxidation reaction employing an oxygen permeable dense ceramic membrane. For a membrane with a specific transport mechanism, the increase in the reactant partial pressure causes an increase in the reaction rate and oxygen permeation flux. However, the increase in the inlet inert gas amount has a complicated effect on the oxygen permeation flux because it lowers both oxygen partial pressure and the reaction rate at the same time.

Original languageEnglish (US)
Pages (from-to)172-179
Number of pages8
JournalChemical Engineering Science
Volume64
Issue number1
DOIs
StatePublished - Jan 2009

Fingerprint

Ceramic membranes
Chemical Reaction
Permeation
Oxygen
Chemical reactions
Membrane
Reaction Rate
Reaction rates
Partial pressure
Fluxes
Partial
Membranes
Noble Gases
Inert gases
Oxidation
Reactor
Discrepancy
Decrease

Keywords

  • Ceramic membrane
  • Ionic conductor
  • Mixed conductor
  • Oxidation reaction
  • Oxygen permeation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Applied Mathematics
  • Industrial and Manufacturing Engineering

Cite this

Analysis of oxygen permeation through dense ceramic membranes with chemical reactions of finite rate. / Rui, Zebao; Li, Yongdan; Lin, Jerry.

In: Chemical Engineering Science, Vol. 64, No. 1, 01.2009, p. 172-179.

Research output: Contribution to journalArticle

@article{5e4f6daf0e4741899a291c27a1c503a6,
title = "Analysis of oxygen permeation through dense ceramic membranes with chemical reactions of finite rate",
abstract = "The oxygen permeation through oxygen ionic or mixed-conducting ceramic membranes under reaction conditions was examined with a model taking into account of different electrical transport mechanisms (p-type and n-type transports) and finite reaction rate. It was demonstrated that with a reaction consuming oxygen in one side of the membrane, the oxygen partial pressure in the reaction side decreases and the oxygen permeation flux increases with the increase in the reaction rate for both the p-type and the n-type transport dominated mechanism. The increase in reaction rate causes a transition of the transport mechanism from p-type to n-type. This transition leads to an increase in the permeation flux by up to 30 times. This effect offers one explanation for the large discrepancies in published permeation data for membrane reactors of partial oxidation reaction employing an oxygen permeable dense ceramic membrane. For a membrane with a specific transport mechanism, the increase in the reactant partial pressure causes an increase in the reaction rate and oxygen permeation flux. However, the increase in the inlet inert gas amount has a complicated effect on the oxygen permeation flux because it lowers both oxygen partial pressure and the reaction rate at the same time.",
keywords = "Ceramic membrane, Ionic conductor, Mixed conductor, Oxidation reaction, Oxygen permeation",
author = "Zebao Rui and Yongdan Li and Jerry Lin",
year = "2009",
month = "1",
doi = "10.1016/j.ces.2008.09.022",
language = "English (US)",
volume = "64",
pages = "172--179",
journal = "Chemical Engineering Science",
issn = "0009-2509",
publisher = "Elsevier BV",
number = "1",

}

TY - JOUR

T1 - Analysis of oxygen permeation through dense ceramic membranes with chemical reactions of finite rate

AU - Rui, Zebao

AU - Li, Yongdan

AU - Lin, Jerry

PY - 2009/1

Y1 - 2009/1

N2 - The oxygen permeation through oxygen ionic or mixed-conducting ceramic membranes under reaction conditions was examined with a model taking into account of different electrical transport mechanisms (p-type and n-type transports) and finite reaction rate. It was demonstrated that with a reaction consuming oxygen in one side of the membrane, the oxygen partial pressure in the reaction side decreases and the oxygen permeation flux increases with the increase in the reaction rate for both the p-type and the n-type transport dominated mechanism. The increase in reaction rate causes a transition of the transport mechanism from p-type to n-type. This transition leads to an increase in the permeation flux by up to 30 times. This effect offers one explanation for the large discrepancies in published permeation data for membrane reactors of partial oxidation reaction employing an oxygen permeable dense ceramic membrane. For a membrane with a specific transport mechanism, the increase in the reactant partial pressure causes an increase in the reaction rate and oxygen permeation flux. However, the increase in the inlet inert gas amount has a complicated effect on the oxygen permeation flux because it lowers both oxygen partial pressure and the reaction rate at the same time.

AB - The oxygen permeation through oxygen ionic or mixed-conducting ceramic membranes under reaction conditions was examined with a model taking into account of different electrical transport mechanisms (p-type and n-type transports) and finite reaction rate. It was demonstrated that with a reaction consuming oxygen in one side of the membrane, the oxygen partial pressure in the reaction side decreases and the oxygen permeation flux increases with the increase in the reaction rate for both the p-type and the n-type transport dominated mechanism. The increase in reaction rate causes a transition of the transport mechanism from p-type to n-type. This transition leads to an increase in the permeation flux by up to 30 times. This effect offers one explanation for the large discrepancies in published permeation data for membrane reactors of partial oxidation reaction employing an oxygen permeable dense ceramic membrane. For a membrane with a specific transport mechanism, the increase in the reactant partial pressure causes an increase in the reaction rate and oxygen permeation flux. However, the increase in the inlet inert gas amount has a complicated effect on the oxygen permeation flux because it lowers both oxygen partial pressure and the reaction rate at the same time.

KW - Ceramic membrane

KW - Ionic conductor

KW - Mixed conductor

KW - Oxidation reaction

KW - Oxygen permeation

UR - http://www.scopus.com/inward/record.url?scp=58149161703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=58149161703&partnerID=8YFLogxK

U2 - 10.1016/j.ces.2008.09.022

DO - 10.1016/j.ces.2008.09.022

M3 - Article

VL - 64

SP - 172

EP - 179

JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

IS - 1

ER -