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Autocatalytic flow chemistry.

Csenge Galanics1, Virág Sintár1, István Szalai2

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Autocatalytic reactions in laminar flow exhibit bistability and dynamic patterns. Tubular reactors reveal complex behaviors, offering insights into the origin of life and nonlinear flow chemistry.

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Area of Science:

  • Chemical kinetics
  • Nonlinear dynamics
  • Origin of life studies

Background:

  • Autocatalysis is key to nonequilibrium self-organization and the origin of life.
  • Bistability and propagating fronts are essential dynamics in autocatalytic networks.
  • Fluid motion can expand emergent behaviors in these systems.

Purpose of the Study:

  • To provide experimental evidence for bistability and related phenomena in autocatalytic reactions.
  • To investigate these dynamics within a laminar tubular flow reactor.
  • To explore the role of advection as the dominant transport process.

Main Methods:

  • Utilizing a tubular flow reactor with laminar flow.
  • Implementing a linear residence time ramp.
  • Observing autocatalytic reactions where advection dominates transport.

Main Results:

  • Experimental evidence of bistability, excitability, and oscillations in autocatalytic reactions.
  • Demonstration that a linear residence time ramp leads to simultaneous, varied dynamic states.
  • Observation of these phenomena in a flow reactor dominated by advection.

Conclusions:

  • Long tubular reactors facilitate rapid exploration of reaction network dynamics.
  • Findings enhance understanding of nonlinear flow chemistry.
  • Provides insights into natural pattern formation and the origin of life.