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Fig. 5.30 Scheme of a flow
system of reactors for the
interacting reaction-
diffusion systems
5ClO
2
þ
2I
2
þ
2H
2
O
!
5Cl
þ
4IO
3
þ
4H
þ
:
This is a bi-stable system, whose states depend on the rate of flow of the reagent
in a flow reactor. High and low concentrations of iodine correspond to two states of
the system. The state of each reactor was determined by the color of the reagent.
The state was visualized by introducing into the flow inside the reactor starch,
which has a deep blue color when in complex with iodine. Two 16-channel
peristaltic pumps (for chlorine and iodate mixtures separately) were used to fill
all reactors with an identical mixture of components.
Two more 16-channel peristaltic pumps performed mass transfer. The reactors
were divided into two groups, odd and even, to overcome experimental noise. A
schematic diagram of the interconnection of reactors is shown in Fig.
5.30
.
