Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use It?

Version 1 : Received: 31 January 2021 / Approved: 1 February 2021 / Online: 1 February 2021 (13:51:59 CET)

A peer-reviewed article of this Preprint also exists.

Mutschler, R.; Moioli, E. Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use It? Catalysts 2021, 11, 311. Mutschler, R.; Moioli, E. Infrared Thermography as an Operando Tool for the Analysis of Catalytic Processes: How to Use It? Catalysts 2021, 11, 311.

Journal reference: Catalysts 2021, 11, 311
DOI: 10.3390/catal11030311

Abstract

Infrared (IR) thermography is a powerful tool to measure temperature with a high space and time resolution. A particular interesting application of this technology is in the field of catalysis, where new insights to highly dynamic surface reactions are possible. This paper presents guidelines for the development of a reactor cell that can aid in the efficient exploitation of infrared thermography for the investigation of catalytic and other surface reactions. Firstly, the necessary properties of the catalytic reactor are described. In fact, special equipment must be developed to ensure the realization of true operando conditions in the IR thermography experiments. Here, we provide the guidelines to assemble a chemical reactor with an IR transmitting window through which the reaction can be studied with the infrared camera. Secondly, we analyze the requirements towards the catalytic system to be directly observable by IR thermography. This includes the need for a catalyst that provides a sufficiently high heat production (or absorption) rate. We present selected examples of catalytic reactions that can be monitored by IR thermography and showing the potential of the technology in revealing transient and steady state chemical phenomena.

Keywords

IR thermography; operando methods; heterogeneous catalysis; exothermic reactions; transient phenomena

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