In situ and operando structural characterisation of a Fischer–Tropsch supported cobalt catalyst

Rochet, Amélie; Moizan, Virginie; Pichon, Christophe; Diehl, Fabrice; Berliet, Adrien; Briois, Valérie

doi:10.1016/j.cattod.2011.03.079

Cited by 51 publications

(57 citation statements)

References 24 publications

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“…By removing catalysts from the reactor with increasing time on stream or simulating a CO hydrogenation environment using CO, H 2 , and H 2 O, ex situ and in situ studies have provided information on changes in oxidation state and coordination environment occurring during aging [63,[82][83][84][85][86][87][88][89][90][91][92][93][94], during water co-feeding [95][96][97], during mildly oxidizing conditions using H 2 O/He addition [98], as a function of conversion (i.e., water partial pressure, since water is a product of FT) [63,70], and as a function of H 2 /CO ratio [72]. The recent coupling of synchrotron Raman spectroscopy with XRD and XAS to investigate both the activation and reaction testing of Fe catalysts is also discussed [94].…”

Section: Introductionmentioning

confidence: 99%

The application of synchrotron methods in characterizing iron and cobalt Fischer–Tropsch synthesis catalysts

Jacobs

Gao

et al. 2013

Catalysis Today

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Section: Introductionmentioning

confidence: 99%

The application of synchrotron methods in characterizing iron and cobalt Fischer–Tropsch synthesis catalysts

Jacobs

Gao

et al. 2013

Catalysis Today

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“…temperature programmed reduction). [75] In FTS catalysts, typically cobalt oxide in the form of the spinel Co 3 O 4 is found in calcined catalysts immediately before activation in a reducing gas stream in preparation for FTS [76]. In this step ]  Co 2+  Co 0 .…”

Section: X-ray Absorption Spectroscopy or X-ray Absorption Fine Strucmentioning

confidence: 99%

X-ray spectroscopic and scattering methods applied to the characterisation of cobalt-based Fischer–Tropsch synthesis catalysts

Herbert

Sénécal

Martin

et al. 2016

Catal. Sci. Technol.

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(2016) 'X-ray spectroscopic and scattering methods applied to the characterisation of cobalt-based FischerTropsch synthesis catalysts.', Catalysis science and technology., 6 (15). pp. 5773-5791. Further information on publisher's website:http://dx.doi.org/10.1039/C6CY00581KPublisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Abstract: This review aims to critically assess the use of X-ray techniques, both of a scattering (e.g. X-ray diffraction (XRD), Pair Distribution Function (PDF)) and spectroscopic nature (X-ray Absorption spectroscopy (XAFS)), in the study of cobalt-based Fisher-Tropsch Synthesis (FTS) catalysts. In particular, the review will focus on how these techniques have been successfully used to describe the salient characteristics of these catalysts that govern subsequent activity and selectivity, as well as to afford insight into deactivation phenomena that have seemingly stifled their application. We discuss how these X-ray-based techniques have been used to yield insight into the bulk structure, the catalyst surface, oxidation states, local (cobalt) geometry, and elemental composition of particles, primarily from a 1D perspective but we also highlight how, with recent developments in advanced X-ray characterisation methods, crucial information can now be obtained in 2D and 3D. The examples chosen focus on data acquired in situ/operando, under realistic operating conditions and during activation which often allow for obtaining a more relevant perspective on the changes in catalyst structure that accompany a change in catalyst performance. We conclude with a perspective on some of the challenges that beset the Co-based FTS technology and discuss how X-ray based techniques could be used to solve them.2

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“…Comparatively little has been done at high pressures (>5 bar), despite the number of catalytic processes that operate under such conditions, for example, Fischer-Tropsch and methanol syntheses. However, this is beginning to change as a result of both the increasing importance of such reactions in industry and investment in the required infrastructure for such experiments [151,152]. Likewise little experiments have been performed at the solid-liquid interface, which will present an important challenge for the near future, especially considering the increasing significance of liquid-phase biomass conversion and possible role of new catalytic materials, for example, metal organic frameworks.…”

Section: Discussionmentioning

confidence: 99%

Recent Trends in Operando and In Situ Characterization: Techniques for Rational Design of Catalysts

Beale

Hofmann

Sankar

et al. 2013

Heterogeneous Catalysts for Clean Technology

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In situ and operando structural characterisation of a Fischer–Tropsch supported cobalt catalyst

Cited by 51 publications

References 24 publications

The application of synchrotron methods in characterizing iron and cobalt Fischer–Tropsch synthesis catalysts

The application of synchrotron methods in characterizing iron and cobalt Fischer–Tropsch synthesis catalysts

X-ray spectroscopic and scattering methods applied to the characterisation of cobalt-based Fischer–Tropsch synthesis catalysts

Recent Trends in Operando and In Situ Characterization: Techniques for Rational Design of Catalysts

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