Effect of Alkali‐ and Alkaline‐Earth‐Metal Promoters on Silica‐Supported Co−Fe Alloy for Autocatalytic CO 2 Fixation
Open accessAbstract
Hydrothermal vents harbor numerous microbial communities rich in reduced carbon species such as formate, acetate, and hydrocarbons. Such essential chemicals for life are produced by H 2 ‐dependent CO 2 reduction, where serpentinization provides continuous H 2 and thermal energy. Here, we show that silica‐supported bimetallic Co−Fe alloys, naturally occurring minerals around serpentinite, can convert CO 2 and H 2 O to key metabolic intermediates of the acetyl coenzyme A pathway such as formate (up to 72 mM), acetate, and pyruvate under mild hydrothermal vent conditions. Long‐chain hydrocarbons up to C 6 including propene are also detected, just as in the Lost City hydrothermal field. The effects of promoters on structural properties and catalytic functionalities of the Co−Fe alloy are systematically investigated by incorporating a series of alkali and alkaline earth metals including Na, Mg, K, and Ca. Alkali and alkaline earth metals resulted in higher formate concentrations when dissolved in water and increased reaction pH, while alkaline earth metals also favored the formation of insoluble hydroxides and carbonates similar to the constituent minerals of the chimneys at the Lost City hydrothermal fields.
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Fe0, Ni0, Ni3Fe and silica-supported Co-Fe alloys can replace the proteins that synthesize formate, acetate, pyruvate from H2 and CO2 via the acetyl-CoA pathway.
“Second, Fe0, Ni0, Ni3Fe and silica‐supported Co‐Fe alloys can replace the proteins that synthesize formate, acetate, pyruvate from H2 and CO2 via the acetyl‐CoA pathway [60, 61, 62, 63, 64] (Fig. 1C).”
From Evidence for corrin biosynthesis in the last universal common ancestor (2025) · cites this paper as [63]
Only the acetyl-CoA pathway operates in vitro to form formate, acetate and pyruvate from H2 and CO2 without enzymes or cofactors, using only metals or minerals that occur in hydrothermal vents as catalysts.
“Moreover, only one of those seven, again only the acetyl CoA pathway, operates in vitro to form its main products – formate, acetate and pyruvate [49, 90] – from H2 and CO2 without enzymes or cofactors, using only metals or minerals that occur in hydrothermal vents as catalysts [60, 61, 62, 63, 64, 125].”
From Evidence for corrin biosynthesis in the last universal common ancestor (2025) · cites this paper as [63]
Under the conditions of serpentinizing hydrothermal vents, transition metals alone convert H2 and CO2 into formate, acetate and pyruvate in water.
“Under the conditions of serpentinizing hydrothermal vents, transition metals alone convert H2 and CO2 into formate, acetate and pyruvate in water [60, 62, 63, 158].”
From Evidence for corrin biosynthesis in the last universal common ancestor (2025) · cites this paper as [63]
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References 75 · Cited by 15
- Authors
- Song, Y., Beyazay, T., & Tüysüz, H.
- Affiliations
- Max-Planck-Institut für Kohlenforschung (DE)
- Corresponding author
- Tüysüz, Harun
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2024-01-11
- Volume
- 63
- Issue
- 8
- Pages
- e202316110-e202316110
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W4390047928
- Cited by
- 15
- References
- 75
- Citations by year
- 2026: 4 · 2025: 7 · 2024: 4
- FWCI
- 1.15
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Angewandte Chemie International Edition (publishedVersion, other-oa)
- PubMed (publishedVersion)
- Funders
- Volkswagen Foundation (96_742)
- Deutsche Forschungsgemeinschaft (TU 315/8-1)
- Max-Planck-Gesellschaft (FUNCAT)
- Topics
- Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
- Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Keywords
- CO2 fixation, silica-supported catalysts, alkali promoters, alkaline earth metal promoters, hydrothermal vents, serpentinization, formate production, acetate, pyruvate, long-chain hydrocarbons, Lost City hydrothermal field
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