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Konshenko, E. V.; Balaev, A. V.; Ismagilov, F. R.; Спивак, С. И.; Сафин, Р. Р.

doi:10.1023/a:1017941209151

Cited by 10 publications

(1 citation statement)

References 2 publications

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“…5 H 2 S-selective catalytic oxidation is a promising way for treating lean acid gas since it can transform H 2 S into elemental sulfur directly and completely without thermodynamic limits. 6 It is far more economical than the Claus process. The irreversible reaction (followed by eq 3) is an intense exothermic reaction (ΔH = −222 kJ/mol).…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Selective Oxidation of H₂S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst

Wei

et al. 2021

Ind. Eng. Chem. Res.

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H2S-selective catalytic oxidation at high temperatures is a cost-effective way to directly treat lean acid gas. Herein, cerium supported on a β-SiC catalyst was synthesized by a simple impregnation method, and the catalytic behavior for the H2S-selective oxidation reaction was evaluated at a relatively high-temperature range (300–550 °C). The 10%CeO2/β-SiC catalyst exhibited excellent H2S conversion (93%) and outstanding sulfur selectivity (94%) at 300 °C and could maintain it at 82 and 87%, respectively, even at temperatures up to 550 °C. Remarkably, the catalyst revealed prominent reaction stability, which could proceed consecutively at 550 °C for 30 h and could also run circularly from 300 to 550 °C three times without notable deactivation. This demonstrated that the β-SiC support allowed good dispersion of CeO2 particles, which further improved the reducibility of the 10%CeO2/β-SiC catalyst. Furthermore, the abundant oxygen vacancies on the catalyst surface facilitated O2 activation by providing a large amount of surface adsorbed oxygen and by improving the lattice oxygen mobility. Particularly, the high thermal stability of the β-SiC support displayed a significant role in high-temperature reactions, and the strong Ce–O–Si interaction between the β-SiC support and the CeO2 phase allowed the catalyst a good resistance to SO2 poisoning. This work provides a prospective way for the treatment of lean acid gas.

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Section: Introductionmentioning

confidence: 99%

High-Temperature Selective Oxidation of H₂S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst

Wei

et al. 2021

Ind. Eng. Chem. Res.

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Hydrogen sulfide oxidation on RE(RE=Sm, Y, La)–V–Sb catalysts: Effects of RE size and electronegativity

Huang

2011

Catalysis Today

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H2S selective catalytic oxidation over Ce substituted La1−xCexFeO3 perovskite oxides catalyst

Zhang

Jiang

et al. 2018

Chemical Engineering Journal

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Untitled

Cited by 10 publications

References 2 publications

High-Temperature Selective Oxidation of H₂S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst

High-Temperature Selective Oxidation of H₂S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst

Hydrogen sulfide oxidation on RE(RE=Sm, Y, La)–V–Sb catalysts: Effects of RE size and electronegativity

H2S selective catalytic oxidation over Ce substituted La1−xCexFeO3 perovskite oxides catalyst

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Untitled

Cited by 10 publications

References 2 publications

High-Temperature Selective Oxidation of H2S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst

High-Temperature Selective Oxidation of H2S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst

Hydrogen sulfide oxidation on RE(RE=Sm, Y, La)–V–Sb catalysts: Effects of RE size and electronegativity

H2S selective catalytic oxidation over Ce substituted La1−xCexFeO3 perovskite oxides catalyst

Contact Info

Product

Resources

About

High-Temperature Selective Oxidation of H₂S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst

High-Temperature Selective Oxidation of H₂S to Elemental Sulfur on a β-SiC-Supported Cerium Catalyst