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Experimental Study of An A+B→C Reaction-Diffusion System in a Capillary: Crossovers from Reaction to Diffusion-Limited Regimes

Published online by Cambridge University Press:  15 February 2011

Yong-Eun Koo ,
Raoul Kopelman ,
Andrew Yen  and
Anna Lin
Yong-Eun Koo
Affiliation:
University of Michigan, Department of Chemistry, Ann Arbor, MI 48109-1055, U.S.A.
Raoul Kopelman
Affiliation:
University of Michigan, Department of Chemistry, Ann Arbor, MI 48109-1055, U.S.A.
Andrew Yen
Affiliation:
University of Michigan, Department of Chemistry, Ann Arbor, MI 48109-1055, U.S.A.
Anna Lin
Affiliation:
University of Michigan, Department of Chemistry, Ann Arbor, MI 48109-1055, U.S.A.
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Abstract

Continuing work on elementary A+B→C reactions in capillaries, we study the reaction front dynamics of xylanol orange with Cr3+ in an effectively one-dimentional system with initially separated reactants. This reaction, in contrast to previously studied systems, is not strictly in the diffusion limited regime. i.e. the probability of reaction between species is not unity. Anamalous behavior not seen in the diffusion-limited case has been observed experimentally for the reaction rate, boundary motion, reaction zone width, and local reaction rate. The observed behavior is consistent with recent theoretical studies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 290: Symposium N – Dynamics in Small Confining Systems , 1992 , 273
Copyright
Copyright © Materials Research Society 1993

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References

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