Measuring Spatiotemporal Concentration and Temperature Profiles in a Tubular Fixed‐Bed Reactor for CO2 Methanation.
Saved in:
| Title: | Measuring Spatiotemporal Concentration and Temperature Profiles in a Tubular Fixed‐Bed Reactor for CO |
|---|---|
| Authors: | Küchen, Gerrit1 (AUTHOR), Turek, Thomas1 (AUTHOR) turek@icvt.tu-clausthal.de |
| Source: | ChemCatChem. 1/15/2026, Vol. 18 Issue 1, p1-11. 11p. |
| Subjects: | Carbon dioxide, Tubular reactors, Transient analysis, Concentration functions, Temperature measurements, Nickel catalysts, Spatiotemporal processes, Chemical reactors |
| Abstract: | In this work, spatiotemporally resolved concentration and temperature profiles were measured in a tubular reactor with a Ni/Al2${\rm Al}_2$O3${\rm O}_3$ catalyst for the CO2${\rm CO}_2$ methanation process, also considering the intermediate product carbon monoxide. In addition to stationary investigations, the reactor was dynamically operated through transient step changes of the feed from inert to reactive conditions at temperatures between 593$\hskip.001pt 593$ and 673K$673 \,\mathrm{K}$ and a flow rate of 5.1$5.1$ and 10.1LNh−1$10.1\, {\mathrm{L}}_{\mathrm{N}}\, {\mathrm{h}}^{-1}$. Spatiotemporal profiles were recorded using a mass spectrometer with a cycle time of 1.2s$1.2 \,\mathrm{s}$ and a narrow axial resolution of up to 1mm$1 \,\mathrm{m}\mathrm{m}$. Consistently, the obtained profiles relaxed to the steady‐state and revealed distinct internal transient kinetic effects. The temporal evolution of the concentration profiles demonstrated the progression of reactant conversion and product formation, accompanied by a temporally changing selectivity through the transient phase and an initial temperature overshoot, attributed to changes in surface coverage during the transient phase. These spatiotemporal measurements provide valuable insights into the internal reactor behavior under transient conditions that cannot be derived from end‐of‐pipe measurements alone, and therefore serve as a robust database for the validation of detailed reactor models and ultimately enhance the understanding of the dynamically operated CO2${\rm CO}_2$ methanation process. [ABSTRACT FROM AUTHOR] |
| Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 190936635 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Measuring Spatiotemporal Concentration and Temperature Profiles in a Tubular Fixed‐Bed Reactor for CO<subscript>2</subscript> Methanation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Küchen%2C+Gerrit%22">Küchen, Gerrit</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Turek%2C+Thomas%22">Turek, Thomas</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> turek@icvt.tu-clausthal.de</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22ChemCatChem%22">ChemCatChem</searchLink>. 1/15/2026, Vol. 18 Issue 1, p1-11. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Tubular+reactors%22">Tubular reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Transient+analysis%22">Transient analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Concentration+functions%22">Concentration functions</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+measurements%22">Temperature measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Nickel+catalysts%22">Nickel catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Spatiotemporal+processes%22">Spatiotemporal processes</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactors%22">Chemical reactors</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this work, spatiotemporally resolved concentration and temperature profiles were measured in a tubular reactor with a Ni/Al2${\rm Al}_2$O3${\rm O}_3$ catalyst for the CO2${\rm CO}_2$ methanation process, also considering the intermediate product carbon monoxide. In addition to stationary investigations, the reactor was dynamically operated through transient step changes of the feed from inert to reactive conditions at temperatures between 593$\hskip.001pt 593$ and 673K$673 \,\mathrm{K}$ and a flow rate of 5.1$5.1$ and 10.1LNh−1$10.1\, {\mathrm{L}}_{\mathrm{N}}\, {\mathrm{h}}^{-1}$. Spatiotemporal profiles were recorded using a mass spectrometer with a cycle time of 1.2s$1.2 \,\mathrm{s}$ and a narrow axial resolution of up to 1mm$1 \,\mathrm{m}\mathrm{m}$. Consistently, the obtained profiles relaxed to the steady‐state and revealed distinct internal transient kinetic effects. The temporal evolution of the concentration profiles demonstrated the progression of reactant conversion and product formation, accompanied by a temporally changing selectivity through the transient phase and an initial temperature overshoot, attributed to changes in surface coverage during the transient phase. These spatiotemporal measurements provide valuable insights into the internal reactor behavior under transient conditions that cannot be derived from end‐of‐pipe measurements alone, and therefore serve as a robust database for the validation of detailed reactor models and ultimately enhance the understanding of the dynamically operated CO2${\rm CO}_2$ methanation process. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=190936635 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/cctc.202501636 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 1 Subjects: – SubjectFull: Carbon dioxide Type: general – SubjectFull: Tubular reactors Type: general – SubjectFull: Transient analysis Type: general – SubjectFull: Concentration functions Type: general – SubjectFull: Temperature measurements Type: general – SubjectFull: Nickel catalysts Type: general – SubjectFull: Spatiotemporal processes Type: general – SubjectFull: Chemical reactors Type: general Titles: – TitleFull: Measuring Spatiotemporal Concentration and Temperature Profiles in a Tubular Fixed‐Bed Reactor for CO2 Methanation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Küchen, Gerrit – PersonEntity: Name: NameFull: Turek, Thomas IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 01 Text: 1/15/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 18673880 Numbering: – Type: volume Value: 18 – Type: issue Value: 1 Titles: – TitleFull: ChemCatChem Type: main |
| ResultId | 1 |
