Iron oxide catalyst at the modified glass fiber support for selective oxidation of H2S

Микенин, П. Е.; Zazhigalov, S.V.; Elyshev, Andrey; Лопатин, С. А.; Larina, T. V.; Cherepanova, Svetlana V.; Pisarev, D. A.; Baranov, D. V.; Zagoruiko, Andrey N.

doi:10.1016/j.catcom.2016.08.038

Cited by 34 publications

(10 citation statements)

References 19 publications

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“…Fe 2 O 3 -based materials are another kind of catalyst that has induced lots of research effort in desulfurization because of the advantages of favorable redox, high H 2 S conversion, and natural abundance. ,, The work of Mikenin et al suggested that the high sulfur capacity of Fe is responsible for the high activity of H 2 S oxidation over FeO x -SiO 2 /GFC catalysts . Zhang and co-workers prepared Fe 2 O 3 -modified semicoke catalysts (FeSC) for the selective oxidation of H 2 S. Among the synthesized catalysts, Fe7SC showed 100% H 2 S conversion at 180 °C, but its stability was unsatisfactory .…”

Section: Selective Oxidation Of H2smentioning

confidence: 99%

“…51,79,80 The work of Mikenin et al suggested that the high sulfur capacity of Fe is responsible for the high activity of H 2 S oxidation over FeO x -SiO 2 /GFC catalysts. 51 Zhang and co-workers prepared Fe 2 O 3 -modified semicoke catalysts (FeSC) for the selective oxidation of H 2 S. Among the synthesized catalysts, Fe7SC showed 100% H 2 S conversion at 180 °C, but its stability was unsatisfactory. 55 This is mainly due to the fact that the strong interaction between Fe and sulfur would cause the rapid deactivation of Fe 2 O 3 -based materials.…”

Section: Selective Oxidation Of H 2 Smentioning

confidence: 99%

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Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Zheng,

Lei,

Wang

et al. 2023

ACS Catal.

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Hydrogen sulfide (H 2 S) is a notorious and lethal gas widely generated in human economic activities and natural occurrences. The growing demand for pollution control makes it vital for the development of efficient processes to remove and convert H 2 S into high-valued products. As such, diversified technologies have been extensively explored, including H 2 S splitting, selective oxidation of H 2 S, and simultaneous conversion of H 2 S and CO 2 . In this review, the state-of-the-art processes for H 2 S conversion and utilization are reviewed. The potentials of various value-added products from H 2 S utilization, such as H 2 , syngas, COS, CH 3 SH, and other sulfur-containing fine chemicals are elucidated in detail. Notably, the traditional and emerging materials for H 2 S removal, mainly including metal oxide catalysts and carbon-based materials are also overviewed in this review. In addition, the catalytic mechanisms for these desulfurization reactions are also briefly discussed. Lastly, perspectives are given on the viability and technological gaps for each technology and corresponding catalysts.

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Section: Selective Oxidation Of H2smentioning

confidence: 99%

Section: Selective Oxidation Of H 2 Smentioning

confidence: 99%

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Zheng,

Lei,

Wang

et al. 2023

ACS Catal.

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“…Al comparar el tiempo de uso de los extrudados cuando alcanza una concentración de H2S en el biogás del 50 % de la concentración inicial, se mantiene la tendencia ascendente indicada: 30 min duró la muestra con un 5 % de cobre; mientras que las muestras con un 10 % y un 15 % la alcanzaron a los 420 minutos. Uno de los primeros procesos para la remoción de compuestos de azufre de gases industriales utilizaba Fe2O3 [25] de acuerdo con la reacción:…”

Section: Sorbentes Preparados Con Cobreunclassified

Evaluación de la remoción de sulfuro de hidrógeno de biogás empleando arcilla ecuatoriana modificada con sodio, zinc y cobre y adaptada morfológicamente

Castro

García

2020

Avances

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En este artículo se estudió la capacidad de una arcilla ecuatoriana, modificada con sodio, cobre y zinc y adaptada morfológicamente ala forma de extrudados para remover sulfuro de hidrógeno de biogás (H2S). Esta capacidad se evaluó empleando un filtro de lecho fijo que contenía los extrudados acoplado a una corriente biogás, con 2,2% de H2S, y un flujo de 1mL/s, a una presión manométrica de 2 psig, temperatura ambiente de 30oC. La corriente de biogás provenía de un biorreactor anaeróbico de tratamiento de vinaza. La concentración de H2S a la entrada y la salida del filtro fue determinada, mediante ampollas GASTEC 4H y 4HH, emplenado una bomba de aspiración TGASTEC GV-100-S-TR. Los mejores resultados se obtuvieron con el sólido ST15% Na 15%Cu15%Zn, el cual mantuvo sus carecteríticas de sorción por 920 min antes de saturarse, removiendo 2,84 mmol de H2S/g de sorbente. Entre tanto , el carbón activado industrial, empleado para la reducción de la concentración H2S, presentó una capacidad de remoción de 2,58 mmol de H2S/g de carbón y se saturó a los 540 min.

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“…Zheng et al 17 studied the selective oxidation of H 2 S over MIL-100(Fe) catalysts, and the results exhibited almost 100% H 2 S conversion and 100% S selectivity at 100−190 °C. Pavel et al 18 reported that FeO x -based glass fiber had much higher selectivity and activity than the conversional Fe 2 O 3 /Al 2 O 3 granular catalyst, resulting from much higher dispersion of the FeO x particles in the supporter. Fang et al 19 investigated the ability of activated carbon-supported iron oxide for the direct selective oxidation of H 2 S to elemental sulfur.…”

Section: Introductionmentioning

confidence: 99%

H₂S-Selective Catalytic Oxidation to Sulfur over Iron Oxide Sorbent Supported on Semi-Coke

Zhang

Cui

et al. 2019

Energy Fuels

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Iron oxides modified by semi-coke sorbents (referred to as FeSC) were prepared by the hydrothermal impregnation method and were used for the selective catalytic oxidation of H2S to sulfur. The physicochemical properties of samples were characterized by Brunauer–Emmett–Teller analysis, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetry (TG), and X-ray photoelectron spectroscopy. The results showed that iron oxide could be highly loaded on semi-coke with a microporous structure and high specific surface area. Fe2O3 was considered the only major active component on the surface of the sorbent. Fe7SC stably maintained the catalytic performance at 180 °C with the longest breakthrough time and highest release sulfur capacity. There was no benefit to desulfurization with excess oxygen in the feed gas. Through further analysis by TG, elemental sulfur was confirmed to be the main product of the catalytic oxidation of H2S. Besides, a possible mechanism of H2S selective catalytic oxidation over sorbent was proposed, in which the key step was the oxidation of FeS into S0 and Fe3+ by O2. Moreover, sorbent deactivation was mainly caused by pore structure blockage by the sulfur product.

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Iron oxide catalyst at the modified glass fiber support for selective oxidation of H2S

Cited by 34 publications

References 19 publications

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Evaluación de la remoción de sulfuro de hidrógeno de biogás empleando arcilla ecuatoriana modificada con sodio, zinc y cobre y adaptada morfológicamente

H₂S-Selective Catalytic Oxidation to Sulfur over Iron Oxide Sorbent Supported on Semi-Coke

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Iron oxide catalyst at the modified glass fiber support for selective oxidation of H2S

Cited by 34 publications

References 19 publications

Advances in Resources Recovery of H2S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H2S: A Review of Desulfurization Processes and Catalysts

Evaluación de la remoción de sulfuro de hidrógeno de biogás empleando arcilla ecuatoriana modificada con sodio, zinc y cobre y adaptada morfológicamente

H2S-Selective Catalytic Oxidation to Sulfur over Iron Oxide Sorbent Supported on Semi-Coke

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Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

H₂S-Selective Catalytic Oxidation to Sulfur over Iron Oxide Sorbent Supported on Semi-Coke