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Jacobs T, van Swieten TP, Vonk SJW, Bosman IP, Melcherts AEM, Janssen BC, Janssens JCL, Monai M, Meijerink A, Rabouw FT, van der Stam W, Weckhuysen BM. Mapping Temperature Heterogeneities during Catalytic CO 2 Methanation with Operando Luminescence Thermometry. ACS Nano 2023; 17:20053-20061. [PMID: 37797269 PMCID: PMC10604088 DOI: 10.1021/acsnano.3c05622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023]
Abstract
Controlling and understanding reaction temperature variations in catalytic processes are crucial for assessing the performance of a catalyst material. Local temperature measurements are challenging, however. Luminescence thermometry is a promising remote-sensing tool, but it is cross-sensitive to the optical properties of a sample and other external parameters. In this work, we measure spatial variations in the local temperature on the micrometer length scale during carbon dioxide (CO2) methanation over a TiO2-supported Ni catalyst and link them to variations in catalytic performance. We extract local temperatures from the temperature-dependent emission of Y2O3:Nd3+ particles, which are mixed with the CO2 methanation catalyst. Scanning, where a near-infrared laser locally excites the emitting Nd3+ ions, produces a temperature map with a micrometer pixel size. We first designed the Y2O3:Nd3+ particles for optimal temperature precision and characterized cross-sensitivity of the measured signal to parameters other than temperature, such as light absorption by the blackened sample due to coke deposition at elevated temperatures. Introducing reaction gases causes a local temperature increase of the catalyst of on average 6-25 K, increasing with the reactor set temperature in the range of 550-640 K. Pixel-to-pixel variations in the temperature increase show a standard deviation of up to 1.5 K, which are attributed to local variations in the catalytic reaction rate. Mapping and understanding such temperature variations are crucial for the optimization of overall catalyst performance on the nano- and macroscopic scale.
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Affiliation(s)
- Thimo
S. Jacobs
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Thomas P. van Swieten
- Condensed
Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Sander J. W. Vonk
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
- Soft
Condensed Matter and Biophysics, Debye Institute for Nanomaterials
Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Isa P. Bosman
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Angela E. M. Melcherts
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Bas C. Janssen
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Joris C. L. Janssens
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Matteo Monai
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Andries Meijerink
- Condensed
Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Freddy T. Rabouw
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
- Soft
Condensed Matter and Biophysics, Debye Institute for Nanomaterials
Science, Utrecht University, Princetonplein 1, 3584 CC Utrecht, The Netherlands
| | - Ward van der Stam
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Bert M. Weckhuysen
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science
& Institute for Sustainable and Circular Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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