CO 2 Conversion to Butene via a Tandem Photovoltaic–Electrochemical/Photothermocatalytic Process: A Co-design Approach to Coupled Microenvironments
Source abstract
Abstract
We developed a tandem, unassisted, solar-driven electrochemical and photothermocatalytic process for the single-pass conversion of CO 2 to butene using only simulated solar irradiation as the energetic input. The two-step process involves electrochemical CO 2 reduction (CO 2 R) to ethylene followed by ethylene dimerization to butene. We assessed two unassisted electrochemical setups to concentrate ethylene in the CO 2 R reactor, achieving concentrations up to 5.4 vol% with 1.8% average solar-to-ethylene conversion and 5.6% average CO 2 -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 H 2, CO, and H 2 O leads to rapid deactivation of the Ni-based ethylene oligomerization catalyst.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: CO2 Reduction Techniques and Catalysts · Advanced Photocatalysis Techniques · Electrocatalysts for Energy Conversion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
Liquid Sunlight Alliance, California Institute of Technology, Pasadena, California 91125, United States
Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, California 91125, United States
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
Funding
Basic Energy Sciences · Stanford University · Kavli Nanoscience Institute, California Institute of Technology · Division of Electrical, Communications and Cyber Systems · Chevron
References (59)
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