Spatial variation of a short-lived intermediate chemical species in a Couette reactor

Journal Article · Wed Apr 15 00:00:00 EDT 1992 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.462655· OSTI ID:7281593

Vigil, R D; Ouyang, Q; Swinney, H L ^[1]

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1. Center for Nonlinear Dynamics, Department of Physics, The University of Texas, Austin, Texas 78712 (United States)

We have conducted experiments and simulations of the spatial variation of a short-lived intermediate species (triiodide) in the autocatalytic oxidation of arsenite by iodate in a reactor that is essentially one dimensional---the Couette reactor. (This reactor consists of two concentric cylinders with the inner one rotating and the outer one at rest; reagents are continuously fed and removed at each end in such a way that there is no net axial flux and there are opposing arsenite and iodate gradients.) The predictions of a one-dimensional reaction--diffusion model, which has {ital no} adjustable parameters, are in good qualitative (and, in some cases, quantitative) agreement with experiments. Thus, the Couette reactor, which is used to deliberately create spatial inhomogeneities, can be exploited to enhance the recovery of short-lived intermediate species relative to that which can be obtained with either a batch or continuous-flow stirred-tank reactor.

• OSTI ID: 7281593
• Journal Information: Journal of Chemical Physics; (United States), Vol. 96:8; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ARSENATES
OXIDATION
IODIDES
LIFETIME
VARIATIONS
ANNULAR SPACE
CATALYSIS
CHEMICAL REACTORS
COUETTE FLOW
CYLINDERS
DIFFUSION
IODATES
ONE-DIMENSIONAL CALCULATIONS
ROTATION
SIMULATION
SPACE DEPENDENCE
STIRRING
TANKS
ARSENIC COMPOUNDS
CHEMICAL REACTIONS
CONFIGURATION
CONTAINERS
FLUID FLOW
HALIDES
HALOGEN COMPOUNDS
IODINE COMPOUNDS
MOTION
OXYGEN COMPOUNDS
SPACE
VISCOUS FLOW
400201* - Chemical & Physicochemical Properties