Mapping Temperature Heterogeneities during Catalytic CO₂ Methanation with Operando Luminescence Thermometry.

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 catalys

SUBMITTER: Jacobs TS 

PROVIDER: S-EPMC10604088 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature