A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Standard

A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst. / Tsakoumis, Nikolaos E.; Dehghan, Roya; Johnsen, Rune; Voronov, Alexey; van Beek, Wouter; Walmsley, John C.; Borg, Øyvind; Rytter, Erling; Chen, De; Rønning, Magnus; Holmen, Anders.

In: Catalysis Today, Vol. 205, 2013, p. 86-93.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Harvard

Tsakoumis, NE, Dehghan, R, Johnsen, R, Voronov, A, van Beek, W, Walmsley, JC, Borg, Ø, Rytter, E, Chen, D, Rønning, M & Holmen, A 2013, 'A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst' Catalysis Today, vol 205, pp. 86-93., 10.1016/j.cattod.2012.08.041

APA

Tsakoumis, N. E., Dehghan, R., Johnsen, R., Voronov, A., van Beek, W., Walmsley, J. C., ... Holmen, A. (2013). A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst. Catalysis Today, 205, 86-93. 10.1016/j.cattod.2012.08.041

CBE

Tsakoumis NE, Dehghan R, Johnsen R, Voronov A, van Beek W, Walmsley JC, Borg Ø, Rytter E, Chen D, Rønning M, Holmen A. 2013. A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst. Catalysis Today. 205:86-93. Available from: 10.1016/j.cattod.2012.08.041

MLA

Vancouver

Author

Tsakoumis, Nikolaos E.; Dehghan, Roya; Johnsen, Rune; Voronov, Alexey; van Beek, Wouter; Walmsley, John C.; Borg, Øyvind; Rytter, Erling; Chen, De; Rønning, Magnus; Holmen, Anders / A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst.

In: Catalysis Today, Vol. 205, 2013, p. 86-93.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{8c85cdcc398f49fcb0c6c234e6d2e4d3,
title = "A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst",
keywords = "Fischer–Tropsch synthesis, Cobalt, In situ, XRPD, XAS, Raman, TEM, Operando, CNF",
publisher = "Elsevier BV",
author = "Tsakoumis, {Nikolaos E.} and Roya Dehghan and Rune Johnsen and Alexey Voronov and {van Beek}, Wouter and Walmsley, {John C.} and Øyvind Borg and Erling Rytter and De Chen and Magnus Rønning and Anders Holmen",
year = "2013",
doi = "10.1016/j.cattod.2012.08.041",
volume = "205",
pages = "86--93",
journal = "Catalysis Today",
issn = "0920-5861",

}

RIS

TY - JOUR

T1 - A combined in situ XAS-XRPD-Raman study of Fischer-Tropsch synthesis over a carbon supported Co catalyst

A1 - Tsakoumis,Nikolaos E.

A1 - Dehghan,Roya

A1 - Johnsen,Rune

A1 - Voronov,Alexey

A1 - van Beek,Wouter

A1 - Walmsley,John C.

A1 - Borg,Øyvind

A1 - Rytter,Erling

A1 - Chen,De

A1 - Rønning,Magnus

A1 - Holmen,Anders

AU - Tsakoumis,Nikolaos E.

AU - Dehghan,Roya

AU - Johnsen,Rune

AU - Voronov,Alexey

AU - van Beek,Wouter

AU - Walmsley,John C.

AU - Borg,Øyvind

AU - Rytter,Erling

AU - Chen,De

AU - Rønning,Magnus

AU - Holmen,Anders

PB - Elsevier BV

PY - 2013

Y1 - 2013

N2 - A cobalt based Fischer-Tropsch synthesis (FTS) catalyst, supported on a carbon nanofibers/carbon felt composite (Co/CNF/CF) was studied in situ at realistic conditions. The catalyst was monitored by Xray absorption spectroscopy (XAS), high-resolution X-ray powder diffraction (HR-XRPD) and Raman spectroscopy, while changes in the gas phase were observed by mass spectrometry (MS). Transmission electron microscopy (TEM) was also applied to characterise the catalyst. The catalyst has a bimodal particle size distribution and exhibits a high deactivation rate. During the in situ study the catalyst appears to reduce further at the induction period of FTS, while crystallite growth is been detected in the same period. At steady state FTS the amount of metallic Co is constant. A change in the volumetric flow towards higher conversions did not affect the degree of reduction or the crystallite size of the catalyst. Post-treatment at 400 degrees C under H-2 atmosphere leads to sintering of the cobalt particles, while a CO treatment followed by H-2 treatment creates a catalyst rich in hexagonal close packed cobalt through the formation of a Co2C intermediate. (C) 2012 Elsevier B.V. All rights reserved.

AB - A cobalt based Fischer-Tropsch synthesis (FTS) catalyst, supported on a carbon nanofibers/carbon felt composite (Co/CNF/CF) was studied in situ at realistic conditions. The catalyst was monitored by Xray absorption spectroscopy (XAS), high-resolution X-ray powder diffraction (HR-XRPD) and Raman spectroscopy, while changes in the gas phase were observed by mass spectrometry (MS). Transmission electron microscopy (TEM) was also applied to characterise the catalyst. The catalyst has a bimodal particle size distribution and exhibits a high deactivation rate. During the in situ study the catalyst appears to reduce further at the induction period of FTS, while crystallite growth is been detected in the same period. At steady state FTS the amount of metallic Co is constant. A change in the volumetric flow towards higher conversions did not affect the degree of reduction or the crystallite size of the catalyst. Post-treatment at 400 degrees C under H-2 atmosphere leads to sintering of the cobalt particles, while a CO treatment followed by H-2 treatment creates a catalyst rich in hexagonal close packed cobalt through the formation of a Co2C intermediate. (C) 2012 Elsevier B.V. All rights reserved.

KW - Fischer–Tropsch synthesis

KW - Cobalt

KW - In situ

KW - XRPD

KW - XAS

KW - Raman

KW - TEM

KW - Operando

KW - CNF

U2 - 10.1016/j.cattod.2012.08.041

DO - 10.1016/j.cattod.2012.08.041

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

VL - 205

SP - 86

EP - 93

ER -