Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation

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Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation. / Honkanen, Mari; Wang, Jianguang; Kärkkäinen, Marja; Huuhtanen, Mika; Jiang, Hua; Kallinen, Kauko; Keiski, Riitta L.; Akola, Jaakko; Vippola, Minnamari.

In: Journal of Catalysis, Vol. 358, 01.02.2018, p. 253-265.

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Harvard

Honkanen, M, Wang, J, Kärkkäinen, M, Huuhtanen, M, Jiang, H, Kallinen, K, Keiski, RL, Akola, J & Vippola, M 2018, 'Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation', Journal of Catalysis, vol. 358, pp. 253-265. https://doi.org/10.1016/j.jcat.2017.12.021

APA

Honkanen, M., Wang, J., Kärkkäinen, M., Huuhtanen, M., Jiang, H., Kallinen, K., ... Vippola, M. (2018). Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation. Journal of Catalysis, 358, 253-265. https://doi.org/10.1016/j.jcat.2017.12.021

Vancouver

Author

Honkanen, Mari ; Wang, Jianguang ; Kärkkäinen, Marja ; Huuhtanen, Mika ; Jiang, Hua ; Kallinen, Kauko ; Keiski, Riitta L. ; Akola, Jaakko ; Vippola, Minnamari. / Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation. In: Journal of Catalysis. 2018 ; Vol. 358. pp. 253-265.

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@article{f98ae317b2f146d5a0681451994e1c57,
title = "Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation",
abstract = "Sulfur deactivation and regeneration behavior of the Pd/Al2O3 catalyst has been investigated via experimental characterization and density functional theory (DFT) simulations. During the sulfur exposure, PdO crystallites grow slightly while bulk Al2(SO4)3 forms on the support. DFT calculations indicate that SOx species interact strongly with the catalyst surface making it chemically inactive in agreement with the experimental results. During the regeneration treatment (CH4 conditions), PdO particles reduce, Al2(SO4)3 is partially removed, and the activity for CH4 conversion is increased. No full recovery can be observed due to remaining Al2(SO4)3, the formation of encapsulating sulfur species, and the partial reduction of PdO particles. To reoxidize Pd, the catalyst is further regenerated (O2 conditions). The resulting CH4 conversion is at the same level than with the regenerated catalyst. Thus, a small amount of Al2(SO4)3 appears to have a stronger effect on the performance than the state of Pd.",
keywords = "Catalytic testing, Density functional theory simulations, Fourier transform infrared spectrometry, Pd-based catalyst, Regeneration, Sulfur poisoning, Transmission electron microscopy",
author = "Mari Honkanen and Jianguang Wang and Marja K{\"a}rkk{\"a}inen and Mika Huuhtanen and Hua Jiang and Kauko Kallinen and Keiski, {Riitta L.} and Jaakko Akola and Minnamari Vippola",
year = "2018",
month = "2",
day = "1",
doi = "10.1016/j.jcat.2017.12.021",
language = "English",
volume = "358",
pages = "253--265",
journal = "Journal of Catalysis",
issn = "0021-9517",
publisher = "Academic Press Inc.",

}

RIS - Download

TY - JOUR

T1 - Regeneration of sulfur-poisoned Pd-based catalyst for natural gas oxidation

AU - Honkanen, Mari

AU - Wang, Jianguang

AU - Kärkkäinen, Marja

AU - Huuhtanen, Mika

AU - Jiang, Hua

AU - Kallinen, Kauko

AU - Keiski, Riitta L.

AU - Akola, Jaakko

AU - Vippola, Minnamari

PY - 2018/2/1

Y1 - 2018/2/1

N2 - Sulfur deactivation and regeneration behavior of the Pd/Al2O3 catalyst has been investigated via experimental characterization and density functional theory (DFT) simulations. During the sulfur exposure, PdO crystallites grow slightly while bulk Al2(SO4)3 forms on the support. DFT calculations indicate that SOx species interact strongly with the catalyst surface making it chemically inactive in agreement with the experimental results. During the regeneration treatment (CH4 conditions), PdO particles reduce, Al2(SO4)3 is partially removed, and the activity for CH4 conversion is increased. No full recovery can be observed due to remaining Al2(SO4)3, the formation of encapsulating sulfur species, and the partial reduction of PdO particles. To reoxidize Pd, the catalyst is further regenerated (O2 conditions). The resulting CH4 conversion is at the same level than with the regenerated catalyst. Thus, a small amount of Al2(SO4)3 appears to have a stronger effect on the performance than the state of Pd.

AB - Sulfur deactivation and regeneration behavior of the Pd/Al2O3 catalyst has been investigated via experimental characterization and density functional theory (DFT) simulations. During the sulfur exposure, PdO crystallites grow slightly while bulk Al2(SO4)3 forms on the support. DFT calculations indicate that SOx species interact strongly with the catalyst surface making it chemically inactive in agreement with the experimental results. During the regeneration treatment (CH4 conditions), PdO particles reduce, Al2(SO4)3 is partially removed, and the activity for CH4 conversion is increased. No full recovery can be observed due to remaining Al2(SO4)3, the formation of encapsulating sulfur species, and the partial reduction of PdO particles. To reoxidize Pd, the catalyst is further regenerated (O2 conditions). The resulting CH4 conversion is at the same level than with the regenerated catalyst. Thus, a small amount of Al2(SO4)3 appears to have a stronger effect on the performance than the state of Pd.

KW - Catalytic testing

KW - Density functional theory simulations

KW - Fourier transform infrared spectrometry

KW - Pd-based catalyst

KW - Regeneration

KW - Sulfur poisoning

KW - Transmission electron microscopy

UR - http://www.scopus.com/inward/record.url?scp=85039986144&partnerID=8YFLogxK

U2 - 10.1016/j.jcat.2017.12.021

DO - 10.1016/j.jcat.2017.12.021

M3 - Article

VL - 358

SP - 253

EP - 265

JO - Journal of Catalysis

JF - Journal of Catalysis

SN - 0021-9517

ER -

ID: 17344400