A recirculation system for concentrating CO<sub>2</sub> electrolyzer products

Kistler, Tobias A.; Prabhakar, Rajiv Ramanujam; Agbo, Peter

doi:10.1039/d3se01506h

Sustainable Energy Fuels

2024

DOI: 10.1039/d3se01506h

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A recirculation system for concentrating CO₂ electrolyzer products

Tobias A. Kistler,

Rajiv Ramanujam Prabhakar,

Peter Agbo

Abstract: Electrochemical carbon dioxide reduction represents a promising path to utilize CO2 as a feedstock for generating valuable products such as fuels and chemicals. Faradaic efficiencies near 100% have been achieved...

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CO₂ Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments

Yap,

Aitbekova,

Salazar

et al. 2024

ACS Energy Lett.

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We developed a tandem, unassisted, solar-driven electrochemical and photothermocatalytic process for the single-pass conversion of CO2 to butene using only simulated solar irradiation as the energetic input. The two-step process involves electrochemical CO2 reduction (CO2R) to ethylene followed by ethylene dimerization to butene. We assessed two unassisted electrochemical setups to concentrate ethylene in the CO2R reactor, achieving concentrations up to 5.4 vol% with 1.8% average solar-to-ethylene conversion and 5.6% average CO2-to-ethylene single-pass conversion under 1-sun illumination. When the effluent electrochemical gas stream was passed through the photothermocatalytic ethylene oligomerization reactor, we generated 600 ppm of butene under 3-sun illumination. Through analysis of this process, we identified that the presence of H2, CO, and H2O leads to rapid deactivation of the Ni-based ethylene oligomerization catalyst.

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CO₂ Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments

Yap,

Aitbekova,

Salazar

et al. 2024

ACS Energy Lett.

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A recirculation system for concentrating CO₂ electrolyzer products

Abstract: Electrochemical carbon dioxide reduction represents a promising path to utilize CO2 as a feedstock for generating valuable products such as fuels and chemicals. Faradaic efficiencies near 100% have been achieved...

Cited by 1 publication

References 30 publications

CO₂ Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments

CO₂ Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments

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A recirculation system for concentrating CO2 electrolyzer products

Abstract: Electrochemical carbon dioxide reduction represents a promising path to utilize CO2 as a feedstock for generating valuable products such as fuels and chemicals. Faradaic efficiencies near 100% have been achieved...

Cited by 1 publication

References 30 publications

CO2 Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments

CO2 Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments

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Product

Resources

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A recirculation system for concentrating CO₂ electrolyzer products

CO₂ Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments

CO₂ Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments