Low Temperature Reverse Water-Gas Shift Enabled by Magnetically Induced Catalysis
Abstract
Equilibrium-limited endothermic reactions play a crucial role in the transition toward a more sustainable chemical industry, but are typically plagued by the need for high operation temperatures (>500°C). Here we show that the temperature gradients generated by the selective and localized heating of catalyst materials in a colder reactor environment shift the equilibrium of thermodynamically-limited endothermic reactions and improve their performance. In particular, the reverse water gas shift reaction and magnetic induction are selected as model reaction and selective catalyst heating method, respectively. Magnetically induced catalysis using standard Cu–Al spinel-derived catalyst functionalized with carbon-coated iron nanoparticles enables high CO yield (up to 62%) at mild catalyst and reactor temperatures (estimated at 300 °C and determined as 25-123 °C, respectively). We demonstrate that the catalyst temperature and not the reactor temperature governs the equilibrium product composition of the rWGS, and that the temperature gradient promotes the in-situ removal of water to shift the gas phase thermodynamic equilibrium. These two points synergistically result in a CO yield that would require a reactor temperature of 650 °C in a conventionally heated gas phase reaction.
Authors 13
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Junhui Hu Aachen
Max Planck Institute for Chemical Energy Conversion · RWTH Aachen University
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
RWTH Aachen University
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Institut Universitaire de France · Université de Toulouse
Affiliation as printed
Université de Toulouse
Institut Universitaire de France
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Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
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Affiliation as printed
Université de Toulouse
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Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
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Gwangju Institute of Science and Technology · Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
Gwangju Institute of Science and Technology
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Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
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Manisha Durai Aachen
Max Planck Institute for Chemical Energy Conversion · RWTH Aachen University
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
RWTH Aachen University
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Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
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Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
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Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
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Walter Leitner Aachen
Max Planck Institute for Chemical Energy Conversion · RWTH Aachen University
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
RWTH Aachen University
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Max Planck Institute for Chemical Energy Conversion
Affiliation as printed
Max Planck Institute for Chemical Energy Conversion
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