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Autocatalytic flow chemistry

Autocatalysis is a crucial process of nonequilibrium self-organization in nature and is assumed to play a role in the origin of life. The essential dynamical phenomena of an autocatalytic reaction network are bistability and the development of propagating front when combined with diffusion. The pres...

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Autores principales: Galanics, Csenge, Sintár, Virág, Szalai, István
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10244366/
https://www.ncbi.nlm.nih.gov/pubmed/37280425
http://dx.doi.org/10.1038/s41598-023-36360-5
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author Galanics, Csenge
Sintár, Virág
Szalai, István
author_facet Galanics, Csenge
Sintár, Virág
Szalai, István
author_sort Galanics, Csenge
collection PubMed
description Autocatalysis is a crucial process of nonequilibrium self-organization in nature and is assumed to play a role in the origin of life. The essential dynamical phenomena of an autocatalytic reaction network are bistability and the development of propagating front when combined with diffusion. The presence of bulk fluid motion may widen the range of emerging behavior in those systems. Many aspects of the dynamics of autocatalytic reactions in a continuous flow have already been studied, especially the shape and dynamics of the chemical front and the influence of the chemical reactions on hydrodynamic instabilities. This paper aims to provide experimental evidence of bistability and related dynamical phenomena, such as excitability and oscillations in autocatalytic reactions performed in a tubular flow reactor, where the flow is laminar and advection is the dominating transport process. We show that the linear residence time ramp may result in the simultaneous appearance of different dynamic states along the length of the pipe. Therefore, long tubular reactors offer a unique opportunity to quickly explore the dynamics of reaction networks. These findings enhance our understanding of nonlinear flow chemistry and its role in natural pattern formation.
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spelling pubmed-102443662023-06-08 Autocatalytic flow chemistry Galanics, Csenge Sintár, Virág Szalai, István Sci Rep Article Autocatalysis is a crucial process of nonequilibrium self-organization in nature and is assumed to play a role in the origin of life. The essential dynamical phenomena of an autocatalytic reaction network are bistability and the development of propagating front when combined with diffusion. The presence of bulk fluid motion may widen the range of emerging behavior in those systems. Many aspects of the dynamics of autocatalytic reactions in a continuous flow have already been studied, especially the shape and dynamics of the chemical front and the influence of the chemical reactions on hydrodynamic instabilities. This paper aims to provide experimental evidence of bistability and related dynamical phenomena, such as excitability and oscillations in autocatalytic reactions performed in a tubular flow reactor, where the flow is laminar and advection is the dominating transport process. We show that the linear residence time ramp may result in the simultaneous appearance of different dynamic states along the length of the pipe. Therefore, long tubular reactors offer a unique opportunity to quickly explore the dynamics of reaction networks. These findings enhance our understanding of nonlinear flow chemistry and its role in natural pattern formation. Nature Publishing Group UK 2023-06-06 /pmc/articles/PMC10244366/ /pubmed/37280425 http://dx.doi.org/10.1038/s41598-023-36360-5 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Galanics, Csenge
Sintár, Virág
Szalai, István
Autocatalytic flow chemistry
title Autocatalytic flow chemistry
title_full Autocatalytic flow chemistry
title_fullStr Autocatalytic flow chemistry
title_full_unstemmed Autocatalytic flow chemistry
title_short Autocatalytic flow chemistry
title_sort autocatalytic flow chemistry
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10244366/
https://www.ncbi.nlm.nih.gov/pubmed/37280425
http://dx.doi.org/10.1038/s41598-023-36360-5
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