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Self-Replicating Fuels via Autocatalytic Molecular Bond Fission
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DOI：10.1002/syst.202500060.png)
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Abstract
En 中文
This computational study introduces a conceptual framework for practical, electrochemical fuel generation schemes that display exponential product yields as functions of time. Exponential reaction scaling for formate replication is simulated through an autocatalytic cycle that emulates the process of DNA replication facilitated by the polymerase chain reaction (PCR). Here, an initial buildup of formate into a two-carbon chain through CO2 carboxylation forms oxalate. A subsequent two-electron reduction yields glyoxylate, with base-mediated hydrolysis driving C─C bond breakage of glyoxylate into two formate equivalents. These products are then recycled to serve as reactants. This recursive process chemistry drives formate evolution that scales as 2n, where n is the cycle number. Each step of the proposed fuel cycle is analogized to the steps of DNA annealing, nucleotide polymerization and hybridized strand fission that are responsible for the exponential product yields observed in PCR-mediated DNA synthesis. As a consequence of this replication behavior, rapid rates of fuel production become accessible even when the individual rate constants for the cycle's constituent reactions are slow. Practical barriers to realizing this system are discussed, particularly the difficulty of formate carboxylation and the energy demands of chemical amplification.
Keywords:
amplification
autocatalysis
CO2 conversion
electrochemical storage
gain
nonlinear dynamics
PCR
renewable energy
replication
self-replication
Journal
C
IF:
3.1
Papers:
258
Citations:
457
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Cited Papers