Chemical Speciation by Quick‐XAS and Raman Spectroscopy: Validation of Two Cells for in situ Time‐Resolved Monitoring of the Impregnation and Drying of CoMoP/Al2O3 Catalysts Article Swipe
Beatriz Barata
,
Christèle Legens
,
Élodie Devers
,
O. Delpoux
,
Laurent Barthe
,
Olga Roudenko
,
Valérie Briois
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/cctc.202201440
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1002/cctc.202201440
This paper aims to describe and validate two cells designed to monitor, by in situ quick‐EXAFS, the transformation of Mo based oxidic species occurring during maturation and drying preparation steps of a single hydrodesulfurization catalyst. These transformations occur firstly upon impregnation/maturation, due to the contact of the acidic impregnation solution with the basic alumina support, and furthermore upon drying. The Mo K edge in situ quick‐EXAFS monitoring of these two elementary preparation steps is hereby reported for the first time, providing quantitative results of the Mo‐speciation. Ex situ Raman spectroscopy is used effectively as a complement. It considers an impregnation solution with a Mo concentration of 0.75 M and molar ratios of P/Mo 0.56 and Co/Mo 0.4. A two‐step drying mechanism is proposed to explain the evolution of the Mo‐speciation during in situ drying where Strandberg's, Anderson's and Dawson's HPAs are transformed into lacunary Keggin's HPA, octa‐ and monomolybdates.
Related Topics
Concepts
X-ray absorption spectroscopy
In situ
Raman spectroscopy
Hydrodesulfurization
Extended X-ray absorption fine structure
Catalysis
Genetic algorithm
Spectroscopy
Chemistry
Analytical Chemistry (journal)
Materials science
Absorption spectroscopy
Chemical engineering
Chromatography
Organic chemistry
Engineering
Physics
Biology
Optics
Evolutionary biology
Quantum mechanics
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/cctc.202201440
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cctc.202201440
- OA Status
- hybrid
- Cited By
- 4
- References
- 22
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4319082534
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4319082534Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1002/cctc.202201440Digital Object Identifier
- Title
-
Chemical Speciation by Quick‐XAS and Raman Spectroscopy: Validation of Two Cells for in situ Time‐Resolved Monitoring of the Impregnation and Drying of CoMoP/Al2O3 CatalystsWork title
- Type
-
articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-02-03Full publication date if available
- Authors
-
Beatriz Barata, Christèle Legens, Élodie Devers, O. Delpoux, Laurent Barthe, Olga Roudenko, Valérie BrioisList of authors in order
- Landing page
-
https://doi.org/10.1002/cctc.202201440Publisher landing page
- PDF URL
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cctc.202201440Direct link to full text PDF
- Open access
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YesWhether a free full text is available
- OA status
-
hybridOpen access status per OpenAlex
- OA URL
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cctc.202201440Direct OA link when available
- Concepts
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X-ray absorption spectroscopy, In situ, Raman spectroscopy, Hydrodesulfurization, Extended X-ray absorption fine structure, Catalysis, Genetic algorithm, Spectroscopy, Chemistry, Analytical Chemistry (journal), Materials science, Absorption spectroscopy, Chemical engineering, Chromatography, Organic chemistry, Engineering, Physics, Biology, Optics, Evolutionary biology, Quantum mechanicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
4Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 2, 2024: 2Per-year citation counts (last 5 years)
- References (count)
-
22Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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