Applying spatially resolved concentration and temperature measurements in a catalytic plate reactor for the kinetic study of CO methanation

Kopyscinski, Jan; Schildhauer, Tilman J.; Vogel, Frédéric; Biollaz, Serge M.A.; Wokaun, Alexander

doi:10.1016/j.jcat.2010.02.008

Cited by 127 publications

(111 citation statements)

References 47 publications

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“…At higher surface temperatures (470 °C) the temperature difference increased to 25 °C. A previous version of the catalytic plate reactor exhibited even larger temperature differences (up to 120 °C) within in a channel height of 5 mm [10]. A high temperature gradient affects the gas diffusion coefficient, the laminar velocity profile and thus the concentration profile along the channel height.…”

Section: Intra Channel Temperature Gradientmentioning

confidence: 96%

“…In addition, polyatomic molecules should not influence the temperature measurements as they do not absorb radiation in the short wavelength range. However, this has not been proven for this kind of system [10,14].…”

Section: Introductionmentioning

confidence: 93%

“…Consequently, a catalytic plate reactor with the possibility to determine the spatial catalyst mass distribution has been developed and used to study the kinetics of syngas methanation and steam reforming [10,11]. This reactor combines spatially-resolved measurement of the gas composition profiles in the gas channel above the catalyst and its surface temperature by means of an open-ended movable sampling capillary and infrared (IR) thermography, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Short-and Midwave-infrared cameras have been used to determine the catalyst surface temperature in various optically accessible reactors [10,12,13]. Shortwave infrared (SWIR) cameras are usually equipped with an indium gallium arsenide (InGaAs) sensor that can detect the radiation emitted from a hot surface in the 0.9 to 1.7 µm wavelength.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improved Kinetic Data Acquisition Using An Optically Accessible Catalytic Plate Reactor with Spatially-Resolved Measurement Techniques. Case of Study: CO2 Methanation

et al. 2018

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Modelling and optimization of chemical reactors require a good understanding of the reactions mechanism with the corresponding kinetic description. Therefore, high quality kinetic data are needed, which can be challenging to obtain, especially for fast and highly exothermic reactions such as the CO 2 methanation. Traditionally, kinetic studies rely on measuring the exit gas composition (1 data point per species and experiment) using differential reactors with diluted catalyst beds and reactants to avoid temperature change. Therefore, an optically accessible catalytic channel reactor was designed, which allowed for the chance to gather spatially-resolved information on axial gas composition and catalyst surface temperature, specifically by means of a movable sampling capillary and shortwave infrared-thermography (SWIR), respectively. A catalyst coated plate was placed at the bottom of the channel, while a set of two quartz glass plates covers the top. In the current study 35 data points per gas species were collect for 1 experiment conducted under laminar flow conditions at 425˝C. Catalyst surface temperature determined via a SWIR camera was not influenced by polyatomic molecules partaking in the reaction and thus did not falsify the kinetic data. The catalyst mass distribution along the reactor axis was determined, enabling the development of a correct reactor model for kinetic parameter estimation and model discrimination.

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Section: Intra Channel Temperature Gradientmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved Kinetic Data Acquisition Using An Optically Accessible Catalytic Plate Reactor with Spatially-Resolved Measurement Techniques. Case of Study: CO2 Methanation

et al. 2018

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“…A comprehensive review of the development of the SpaciMS system and its various applications has been recently published [6]. Also the optically accessible channel reactor developed at the Paul Scherrer Institute has found further application for example for a spatially resolved kinetic study of CO methanation [9]. In a recent study by Schuurman et al [10] a design quite similar to that developed at the Paul Scherrer Institute was used for spatially resolved DRIFTS in CO oxidation over Pt catalysts, even though the capillary sampling technique…”

Section: Introductionmentioning

confidence: 99%

Measurement and analysis of spatial reactor profiles in high temperature catalysis research

Korup

Mavlyankariev

Geske

et al. 2011

Chemical Engineering and Processing: Process Intensification

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Spatial reactor profile measurements are a novel tool in chemical reaction engineering research. In this technique species concentrations or molar flow rates, phase temperatures and spectroscopic information are measured as function of the axial coordinate in a continuous flow tubular reactor. The obtained spatial gradients can be analyzed in terms of kinetic and mechanistic information about the reaction under study. The advantage of the spatial profile technique is that transient data are obtained at steady state and that it can be applied at temperature and pressure conditions relevant for industrial application. After a detailed description of the method various application examples are discussed such as methane catalytic partial oxidation on rhodium and platinum coated foam catalysts, methane oxidative coupling in the gas phase and oxidative dehydrogenation of ethane to ethylene on a supported molybdenum oxide catalyst. It is demonstrated how information about film transport limitation and reaction pathways can be extracted. The importance of spatial reactor profiles for validation of microkinetic models is highlighted for gas phase methane oxidative coupling at elevated pressure. Finally the idea of spatially resolved Raman spectroscopy using an optical fiber sensor is demonstrated and key parameters such as spatial resolution and position accuracy are determined.

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Methanation for Synthetic Natural Gas Production – Chemical Reaction Engineering Aspects

Schildhauer¹

2016

Synthetic Natural Gas From Coal, Dry Biomass, and Power‐to‐Gas Applications

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Applying spatially resolved concentration and temperature measurements in a catalytic plate reactor for the kinetic study of CO methanation

Cited by 127 publications

References 47 publications

Improved Kinetic Data Acquisition Using An Optically Accessible Catalytic Plate Reactor with Spatially-Resolved Measurement Techniques. Case of Study: CO2 Methanation

Improved Kinetic Data Acquisition Using An Optically Accessible Catalytic Plate Reactor with Spatially-Resolved Measurement Techniques. Case of Study: CO2 Methanation

Measurement and analysis of spatial reactor profiles in high temperature catalysis research

Methanation for Synthetic Natural Gas Production – Chemical Reaction Engineering Aspects

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