Effect of dopant addition on oxygen sorption properties of La-Sr-Co-Fe-O perovskite type oxide

Qinghua Yin; Jerry Lin

doi:10.1007/s10450-006-0563-z

Effect of dopant addition on oxygen sorption properties of La-Sr-Co-Fe-O perovskite type oxide

Qinghua Yin, Jerry Lin

Chemical Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The paper reports on effect of doping Ag⁺, Ni²⁺, Ca²⁺, Ba²⁺ or Zr⁴⁺ in La_0.1Sr _0.9Co_0.9Fe_0.1O_3-δ (LSCF1991) on its oxygen sorption capacity and desorption rate. The dopant can be incorporated into LSCF1991 matrix causing lattice expansion. The oxygen sorption capacity and tendency for the disordered perovskite to ordered brownmillerite phase transition for these samples decrease in the order: LSCF1991 > LSCF-Ag > LSCF-Ni > LSCF-Ca > LSCF-Ba > LSCF-Zr. The oxygen desorption rate also decreases in the same order for the doped samples. Doping increases the tendency of the disorder to order phase transition and enhances oxygen desorption rate during oxygen desorption step. Doping Ag and Ni provides more pronounced enhancement in oxygen desorption rate. The results suggest that Ag and Ni doped LSCF1991 samples are promising sorbents for use in a high temperature sorption process for air separation.

Original language	English (US)
Pages (from-to)	329-338
Number of pages	10
Journal	Adsorption
Volume	12
Issue number	5-6
DOIs	https://doi.org/10.1007/s10450-006-0563-z
State	Published - Sep 2006

Keywords

Air separation
Kinetics
Oxygen sorption capacity
Perovskite-type oxides
Phase transition

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Surfaces and Interfaces

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title = "Effect of dopant addition on oxygen sorption properties of La-Sr-Co-Fe-O perovskite type oxide",

abstract = "The paper reports on effect of doping Ag+, Ni2+, Ca2+, Ba2+ or Zr4+ in La0.1Sr 0.9Co0.9Fe0.1O3-δ (LSCF1991) on its oxygen sorption capacity and desorption rate. The dopant can be incorporated into LSCF1991 matrix causing lattice expansion. The oxygen sorption capacity and tendency for the disordered perovskite to ordered brownmillerite phase transition for these samples decrease in the order: LSCF1991 > LSCF-Ag > LSCF-Ni > LSCF-Ca > LSCF-Ba > LSCF-Zr. The oxygen desorption rate also decreases in the same order for the doped samples. Doping increases the tendency of the disorder to order phase transition and enhances oxygen desorption rate during oxygen desorption step. Doping Ag and Ni provides more pronounced enhancement in oxygen desorption rate. The results suggest that Ag and Ni doped LSCF1991 samples are promising sorbents for use in a high temperature sorption process for air separation.",

keywords = "Air separation, Kinetics, Oxygen sorption capacity, Perovskite-type oxides, Phase transition",

author = "Qinghua Yin and Jerry Lin",

note = "Funding Information: Acknowledgments The work was supported by U.S. National Science Foundation (CTS-0132694).",

year = "2006",

month = sep,

doi = "10.1007/s10450-006-0563-z",

language = "English (US)",

volume = "12",

pages = "329--338",

journal = "Adsorption",

issn = "0929-5607",

publisher = "Springer Netherlands",

number = "5-6",

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TY - JOUR

T1 - Effect of dopant addition on oxygen sorption properties of La-Sr-Co-Fe-O perovskite type oxide

AU - Yin, Qinghua

AU - Lin, Jerry

N1 - Funding Information: Acknowledgments The work was supported by U.S. National Science Foundation (CTS-0132694).

PY - 2006/9

Y1 - 2006/9

N2 - The paper reports on effect of doping Ag+, Ni2+, Ca2+, Ba2+ or Zr4+ in La0.1Sr 0.9Co0.9Fe0.1O3-δ (LSCF1991) on its oxygen sorption capacity and desorption rate. The dopant can be incorporated into LSCF1991 matrix causing lattice expansion. The oxygen sorption capacity and tendency for the disordered perovskite to ordered brownmillerite phase transition for these samples decrease in the order: LSCF1991 > LSCF-Ag > LSCF-Ni > LSCF-Ca > LSCF-Ba > LSCF-Zr. The oxygen desorption rate also decreases in the same order for the doped samples. Doping increases the tendency of the disorder to order phase transition and enhances oxygen desorption rate during oxygen desorption step. Doping Ag and Ni provides more pronounced enhancement in oxygen desorption rate. The results suggest that Ag and Ni doped LSCF1991 samples are promising sorbents for use in a high temperature sorption process for air separation.

AB - The paper reports on effect of doping Ag+, Ni2+, Ca2+, Ba2+ or Zr4+ in La0.1Sr 0.9Co0.9Fe0.1O3-δ (LSCF1991) on its oxygen sorption capacity and desorption rate. The dopant can be incorporated into LSCF1991 matrix causing lattice expansion. The oxygen sorption capacity and tendency for the disordered perovskite to ordered brownmillerite phase transition for these samples decrease in the order: LSCF1991 > LSCF-Ag > LSCF-Ni > LSCF-Ca > LSCF-Ba > LSCF-Zr. The oxygen desorption rate also decreases in the same order for the doped samples. Doping increases the tendency of the disorder to order phase transition and enhances oxygen desorption rate during oxygen desorption step. Doping Ag and Ni provides more pronounced enhancement in oxygen desorption rate. The results suggest that Ag and Ni doped LSCF1991 samples are promising sorbents for use in a high temperature sorption process for air separation.

KW - Air separation

KW - Kinetics

KW - Oxygen sorption capacity

KW - Perovskite-type oxides

KW - Phase transition

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DO - 10.1007/s10450-006-0563-z

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SN - 0929-5607

VL - 12

SP - 329

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JO - Adsorption

JF - Adsorption

IS - 5-6

ER -

Effect of dopant addition on oxygen sorption properties of La-Sr-Co-Fe-O perovskite type oxide

Abstract

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