Improved high-performance La0.7Sr0.3MxFe1−xO3 (M = Cu, Cr, Ni) perovskite catalysts for ortho-para hydrogen spin conversion

Jeong-Gil Choi (최정길); Euiji Choi; Soon-Cheol Kweon (권순철); In-Hwan Oh (오인환)

doi:10.6111/JKCGCT.2018.28.1.044

Improved high-performance La0.7Sr0.3MxFe1−xO3 (M = Cu, Cr, Ni) perovskite catalysts for ortho-para hydrogen spin conversion

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2018, 28(1), pp.44-50
DOI : 10.6111/JKCGCT.2018.28.1.044
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : December 4, 2017
Accepted : December 28, 2017
Published : February 28, 2018

Jeong-Gil Choi ¹, Euiji Choi ², Soon-Cheol Kweon ³, In-Hwan Oh ³

¹한남대학교
²Kyushu University
³한국과학기술연구원

Accredited

ABSTRACT

The improved high-performance Fe-based perovskite-type oxides (La0.7Sr0.3MxFe1−xO3, M = Cu, Cr, Ni) were synthesized by a citrate method and characterized by SEM, EDS, XRD and NMR spectroscopy analyses. The characterization analyses revealed that the stoichiometric amounts of lattice oxygen were existed in all of perovskite samples except for a nickel-doped perovskite. Fe-based perovskites exhibited a surprising result for ortho-para H2 spin conversion reaction, indicating two orders of magnitude higher conversions and conversion rates than commercial Fe2O3. It was considered that this conversion difference might be attributed to the presence of oxygen vacancies in Fe-based perovskites prepared in this study.

KEYWORDS

La0.7Sr0.3MxFe1−xO3 (M = Cu, Cr, Ni) perovskites, Commercial Fe2O3 catalyst, Ortho-para hydrogen spin conversion, Particle size, Structure sensitivity

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Improved high-performance La0.7Sr0.3MxFe1−xO3 (M = Cu, Cr, Ni) perovskite catalysts for ortho-para hydrogen spin conversion

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Improved high-performance La0.7Sr0.3MxFe1−xO3 (M = Cu, Cr, Ni) perovskite catalysts for ortho-para hydrogen spin conversion

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KEYWORDS

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