Mössbauer study of the sulfidation of hydrodesulfurization catalysts: so Called 'Co-Mo-S' phase observed in carbon-supported Co and Co-Mo Sulfide catalysts

M.W.J. Crajé, E. Gerkema, V.H.J. Beer, de, A.M. Kraan, van der

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

6 Citations (Scopus)

Abstract

In-situ Mössbauer Emission Spectroscopy (MES) has been used to study the type of phases present in sulfided activated carbon-supported Co and Co-Mo hydrodesulfurization (HDS) catalysts. Most of the reported MES studies are performed on Co-Mo/Al2O3 catalysts. Co species in the so-called "Co-Mo-S" phase, so far only observed in sulfided catalysts containing Co and Mo, should govern the HDS activity. The present observations show that the same Co species in sulfided Co/C and Co-Mo/C catalysts, with the same quadrupole splitting (QS) as "Co-Mo-S" can be formed. Similar results are obtained for sulfided Fe/C and Fe-Mo/C catalysts. Furthermore, it turns out that the QS-value of the "active phase" in the sulfided Co/C and Co-Mo/C catalysts depends on the sulfiding temperature and Co content. Hence, it seems unlikely that there will be only one well defined active sulfide phase which governs the HDS activity.
Original languageEnglish
Title of host publicationHydrotreating Catalysts - Preparation, Characterization and Performance, Proceedings of the Annual International AlChE Meeting, Washington, DC
EditorsL. Occelli, R.G. Anthony
Place of PublicationAmsterdam
PublisherElsevier
Pages165-179
ISBN (Print)0-444-88032-1
DOIs
Publication statusPublished - 1989
Event1988 AIChE Annual Meeting - Washington, United States
Duration: 27 Nov 19882 Dec 1988

Publication series

NameStudies in Surface Science and Catalysis
Volume50
ISSN (Print)0167-2991

Conference

Conference1988 AIChE Annual Meeting
CountryUnited States
CityWashington
Period27/11/882/12/88

Fingerprint

Hydrodesulfurization
Sulfides
Carbon
Catalysts
Emission spectroscopy
Activated carbon

Cite this

Crajé, M. W. J., Gerkema, E., Beer, de, V. H. J., & Kraan, van der, A. M. (1989). Mössbauer study of the sulfidation of hydrodesulfurization catalysts: so Called 'Co-Mo-S' phase observed in carbon-supported Co and Co-Mo Sulfide catalysts. In L. Occelli, & R. G. Anthony (Eds.), Hydrotreating Catalysts - Preparation, Characterization and Performance, Proceedings of the Annual International AlChE Meeting, Washington, DC (pp. 165-179). (Studies in Surface Science and Catalysis; Vol. 50). Amsterdam: Elsevier. https://doi.org/10.1016/S0167-2991(08)60497-8, https://doi.org/10.1016/0169-4332(91)90157-F
Crajé, M.W.J. ; Gerkema, E. ; Beer, de, V.H.J. ; Kraan, van der, A.M. / Mössbauer study of the sulfidation of hydrodesulfurization catalysts: so Called 'Co-Mo-S' phase observed in carbon-supported Co and Co-Mo Sulfide catalysts. Hydrotreating Catalysts - Preparation, Characterization and Performance, Proceedings of the Annual International AlChE Meeting, Washington, DC. editor / L. Occelli ; R.G. Anthony. Amsterdam : Elsevier, 1989. pp. 165-179 (Studies in Surface Science and Catalysis).
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abstract = "In-situ M{\"o}ssbauer Emission Spectroscopy (MES) has been used to study the type of phases present in sulfided activated carbon-supported Co and Co-Mo hydrodesulfurization (HDS) catalysts. Most of the reported MES studies are performed on Co-Mo/Al2O3 catalysts. Co species in the so-called {"}Co-Mo-S{"} phase, so far only observed in sulfided catalysts containing Co and Mo, should govern the HDS activity. The present observations show that the same Co species in sulfided Co/C and Co-Mo/C catalysts, with the same quadrupole splitting (QS) as {"}Co-Mo-S{"} can be formed. Similar results are obtained for sulfided Fe/C and Fe-Mo/C catalysts. Furthermore, it turns out that the QS-value of the {"}active phase{"} in the sulfided Co/C and Co-Mo/C catalysts depends on the sulfiding temperature and Co content. Hence, it seems unlikely that there will be only one well defined active sulfide phase which governs the HDS activity.",
author = "M.W.J. Craj{\'e} and E. Gerkema and {Beer, de}, V.H.J. and {Kraan, van der}, A.M.",
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Crajé, MWJ, Gerkema, E, Beer, de, VHJ & Kraan, van der, AM 1989, Mössbauer study of the sulfidation of hydrodesulfurization catalysts: so Called 'Co-Mo-S' phase observed in carbon-supported Co and Co-Mo Sulfide catalysts. in L Occelli & RG Anthony (eds), Hydrotreating Catalysts - Preparation, Characterization and Performance, Proceedings of the Annual International AlChE Meeting, Washington, DC. Studies in Surface Science and Catalysis, vol. 50, Elsevier, Amsterdam, pp. 165-179, 1988 AIChE Annual Meeting, Washington, United States, 27/11/88. https://doi.org/10.1016/S0167-2991(08)60497-8, https://doi.org/10.1016/0169-4332(91)90157-F

Mössbauer study of the sulfidation of hydrodesulfurization catalysts: so Called 'Co-Mo-S' phase observed in carbon-supported Co and Co-Mo Sulfide catalysts. / Crajé, M.W.J.; Gerkema, E.; Beer, de, V.H.J.; Kraan, van der, A.M.

Hydrotreating Catalysts - Preparation, Characterization and Performance, Proceedings of the Annual International AlChE Meeting, Washington, DC. ed. / L. Occelli; R.G. Anthony. Amsterdam : Elsevier, 1989. p. 165-179 (Studies in Surface Science and Catalysis; Vol. 50).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

TY - GEN

T1 - Mössbauer study of the sulfidation of hydrodesulfurization catalysts: so Called 'Co-Mo-S' phase observed in carbon-supported Co and Co-Mo Sulfide catalysts

AU - Crajé, M.W.J.

AU - Gerkema, E.

AU - Beer, de, V.H.J.

AU - Kraan, van der, A.M.

PY - 1989

Y1 - 1989

N2 - In-situ Mössbauer Emission Spectroscopy (MES) has been used to study the type of phases present in sulfided activated carbon-supported Co and Co-Mo hydrodesulfurization (HDS) catalysts. Most of the reported MES studies are performed on Co-Mo/Al2O3 catalysts. Co species in the so-called "Co-Mo-S" phase, so far only observed in sulfided catalysts containing Co and Mo, should govern the HDS activity. The present observations show that the same Co species in sulfided Co/C and Co-Mo/C catalysts, with the same quadrupole splitting (QS) as "Co-Mo-S" can be formed. Similar results are obtained for sulfided Fe/C and Fe-Mo/C catalysts. Furthermore, it turns out that the QS-value of the "active phase" in the sulfided Co/C and Co-Mo/C catalysts depends on the sulfiding temperature and Co content. Hence, it seems unlikely that there will be only one well defined active sulfide phase which governs the HDS activity.

AB - In-situ Mössbauer Emission Spectroscopy (MES) has been used to study the type of phases present in sulfided activated carbon-supported Co and Co-Mo hydrodesulfurization (HDS) catalysts. Most of the reported MES studies are performed on Co-Mo/Al2O3 catalysts. Co species in the so-called "Co-Mo-S" phase, so far only observed in sulfided catalysts containing Co and Mo, should govern the HDS activity. The present observations show that the same Co species in sulfided Co/C and Co-Mo/C catalysts, with the same quadrupole splitting (QS) as "Co-Mo-S" can be formed. Similar results are obtained for sulfided Fe/C and Fe-Mo/C catalysts. Furthermore, it turns out that the QS-value of the "active phase" in the sulfided Co/C and Co-Mo/C catalysts depends on the sulfiding temperature and Co content. Hence, it seems unlikely that there will be only one well defined active sulfide phase which governs the HDS activity.

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DO - 10.1016/S0167-2991(08)60497-8

M3 - Conference contribution

SN - 0-444-88032-1

T3 - Studies in Surface Science and Catalysis

SP - 165

EP - 179

BT - Hydrotreating Catalysts - Preparation, Characterization and Performance, Proceedings of the Annual International AlChE Meeting, Washington, DC

A2 - Occelli, L.

A2 - Anthony, R.G.

PB - Elsevier

CY - Amsterdam

ER -

Crajé MWJ, Gerkema E, Beer, de VHJ, Kraan, van der AM. Mössbauer study of the sulfidation of hydrodesulfurization catalysts: so Called 'Co-Mo-S' phase observed in carbon-supported Co and Co-Mo Sulfide catalysts. In Occelli L, Anthony RG, editors, Hydrotreating Catalysts - Preparation, Characterization and Performance, Proceedings of the Annual International AlChE Meeting, Washington, DC. Amsterdam: Elsevier. 1989. p. 165-179. (Studies in Surface Science and Catalysis). https://doi.org/10.1016/S0167-2991(08)60497-8, https://doi.org/10.1016/0169-4332(91)90157-F