TEXTURE AND STRUCTURE VARIATION OF PEROVSKITE LaFeO3/ZSM-5 DURING HIGH-TEMPERATURE DESULFURIZATION

Dongjing Liu, Weiguo Zhou and Jiang Wu
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Dongjing Liu: School of Energy and Power Engineering, Jiangsu University, 212013 Zhenjiang, P. R. China†College of Mechanical Engineering, Tongji University, 200092 Shanghai, P. R. China
Weiguo Zhou: #x2020;College of Mechanical Engineering, Tongji University, 200092 Shanghai, P. R. China
Jiang Wu: #x2021;College of Energy and Mechanical Engineering, Shanghai University of Electric Power, 200090 Shanghai, P. R. China

Surface Review and Letters (SRL), 2020, vol. 27, issue 05, 1-10

Abstract: Perovskite LaFeO3/ZSM-5 is synthesized via citrate route for H2S removal at high temperatures. It shows good thermal stability after heat treatment at 500–700∘C with respect to slight changes in crystallographic phase and textural property. It presents the optimal desulfurization performance at 600∘C with sulfur capacity of 1017μmolS/g and products of S, LaS2, and Fe7S8. Sulfidation at 500∘C yields the same products as sulfidation at 600∘C but displays the lowest sulfur capacity of 408μmolS/g. Sulfidation at 700∘C produces La2O2S, Fe3S4, and unreacted LaFeO3. The activation energy of the sulfidation reaction over LaFeO3/ZSM-5 is 109.6kJ/mol.

Keywords: Perovskite; zeolite; texture variation; structure property; desulfurization (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501518

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