Effect of H2S and thiophene on the steam reforming activity of nickel and rhodium catalysts in a simulated coke oven gas stream

Asbel David Hernandez; Noora Kaisalo; Pekka Simell; Marco Scarsella

doi:10.1016/j.apcatb.2019.117977

Effect of H₂S and thiophene on the steam reforming activity of nickel and rhodium catalysts in a simulated coke oven gas stream

Asbel David Hernandez^*, Noora Kaisalo, Pekka Simell, Marco Scarsella

^*Corresponding author for this work

Sapienza University of Rome

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

28 Citations (Scopus)

Abstract

In the present work the impact of H₂S and thiophene on the steam reforming and water-gas shift (WGS) reactions were studied. The activity of three catalysts i.e. Ni/Al₂O₃, Ni/mayenite and Rh/Al₂O₃ was evaluated using an atmospheric fixed-bed lab-scale quartz reactor. A simulated coke oven gas (COG) stream was fed to the reactor. The temperature range studied was 675–900 °C. It was found that the temperature had a significant influence on the degree of poisoning of the catalysts and thus their performance. Regeneration of benzene reforming activity of the poisoned Ni/Al₂O₃ was achieved after exposing the catalyst to up to 200 ppm of H₂S. Rh/Al₂O₃ outperformed the nickel catalysts in the steam reforming of benzene in the presence of thiophene. Ni/mayenite was the only catalyst able to maintain a noticeable WGS activity in the presence of H₂S this result was attributed to the presence of CaO on the surface of this catalyst.

Original language	English
Article number	117977
Journal	Applied Catalysis B: Environmental
Volume	258
DOIs	https://doi.org/10.1016/j.apcatb.2019.117977
Publication status	Published - Dec 2019
MoE publication type	A1 Journal article-refereed

Keywords

Catalytic steam reforming
Coke oven gas
Sulfur poisoning
Water-gas shift

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10.1016/j.apcatb.2019.117977

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title = "Effect of H2S and thiophene on the steam reforming activity of nickel and rhodium catalysts in a simulated coke oven gas stream",

abstract = "In the present work the impact of H2S and thiophene on the steam reforming and water-gas shift (WGS) reactions were studied. The activity of three catalysts i.e. Ni/Al2O3, Ni/mayenite and Rh/Al2O3 was evaluated using an atmospheric fixed-bed lab-scale quartz reactor. A simulated coke oven gas (COG) stream was fed to the reactor. The temperature range studied was 675–900 °C. It was found that the temperature had a significant influence on the degree of poisoning of the catalysts and thus their performance. Regeneration of benzene reforming activity of the poisoned Ni/Al2O3 was achieved after exposing the catalyst to up to 200 ppm of H2S. Rh/Al2O3 outperformed the nickel catalysts in the steam reforming of benzene in the presence of thiophene. Ni/mayenite was the only catalyst able to maintain a noticeable WGS activity in the presence of H2S this result was attributed to the presence of CaO on the surface of this catalyst.",

keywords = "Catalytic steam reforming, Coke oven gas, Sulfur poisoning, Water-gas shift",

author = "Hernandez, {Asbel David} and Noora Kaisalo and Pekka Simell and Marco Scarsella",

note = "Funding Information: This project has received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement No 700300. This Joint Undertaking receives support from the European Union's Horizon 2020 research and innovation programme and Hydrogen Europe and N.ERGHY. Funding Information: This project has received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement No 700300 . This Joint Undertaking receives support from the European Union{\textquoteright}s Horizon 2020 research and innovation programme and Hydrogen Europe and N.ERGHY. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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AU - Hernandez, Asbel David

AU - Kaisalo, Noora

AU - Simell, Pekka

AU - Scarsella, Marco

N1 - Funding Information: This project has received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement No 700300. This Joint Undertaking receives support from the European Union's Horizon 2020 research and innovation programme and Hydrogen Europe and N.ERGHY. Funding Information: This project has received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement No 700300 . This Joint Undertaking receives support from the European Union’s Horizon 2020 research and innovation programme and Hydrogen Europe and N.ERGHY. Publisher Copyright: © 2019 Elsevier B.V. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2019/12

Y1 - 2019/12

N2 - In the present work the impact of H2S and thiophene on the steam reforming and water-gas shift (WGS) reactions were studied. The activity of three catalysts i.e. Ni/Al2O3, Ni/mayenite and Rh/Al2O3 was evaluated using an atmospheric fixed-bed lab-scale quartz reactor. A simulated coke oven gas (COG) stream was fed to the reactor. The temperature range studied was 675–900 °C. It was found that the temperature had a significant influence on the degree of poisoning of the catalysts and thus their performance. Regeneration of benzene reforming activity of the poisoned Ni/Al2O3 was achieved after exposing the catalyst to up to 200 ppm of H2S. Rh/Al2O3 outperformed the nickel catalysts in the steam reforming of benzene in the presence of thiophene. Ni/mayenite was the only catalyst able to maintain a noticeable WGS activity in the presence of H2S this result was attributed to the presence of CaO on the surface of this catalyst.

AB - In the present work the impact of H2S and thiophene on the steam reforming and water-gas shift (WGS) reactions were studied. The activity of three catalysts i.e. Ni/Al2O3, Ni/mayenite and Rh/Al2O3 was evaluated using an atmospheric fixed-bed lab-scale quartz reactor. A simulated coke oven gas (COG) stream was fed to the reactor. The temperature range studied was 675–900 °C. It was found that the temperature had a significant influence on the degree of poisoning of the catalysts and thus their performance. Regeneration of benzene reforming activity of the poisoned Ni/Al2O3 was achieved after exposing the catalyst to up to 200 ppm of H2S. Rh/Al2O3 outperformed the nickel catalysts in the steam reforming of benzene in the presence of thiophene. Ni/mayenite was the only catalyst able to maintain a noticeable WGS activity in the presence of H2S this result was attributed to the presence of CaO on the surface of this catalyst.

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KW - Coke oven gas

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Effect of H₂S and thiophene on the steam reforming activity of nickel and rhodium catalysts in a simulated coke oven gas stream

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Keywords

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