430
VORONOV et al.
where k1Σ is the overall rate constant of the forward
reaction under kinetic control; k2Σ, overall rate constant
ofthereversereactionunderkineticcontrol;k1d, effective
rate constant of diffusion of the reactants to the catalyst
surface; k2d, effective rate constant of the diffusion of
the reaction products from the catalyst surface; and Q,
volumetric rate of feeding the reaction mixture into the
reactor (mL min–1).
synthesis of peracetic acid on a fixed catalyst bed, the
process is hindered by slow diffusion of the reactants
to the catalyst surface. The diffusion hindrance can
be eliminated by increasing the flow rate to the level
corresponding to turbulent hydrodynamics (Reynolds
number Re > 100).
ACKNOWLEDGMENTS
Indeed, at k1d
=
0.02 and k2d
=
The authors are grateful to the Russian Founda-
tion for Basic Research and to the Ministry of Educa-
tion and Science of the Russian Federation (task no.
4.2512.2014/K) for the financial support.
0.013 [M τ*–1 (min mL–1)], we were able to reach
high approximation reliability (R2 = 0.98 and R2 = 0.95)
for the linear regression of all the experimental and cal-
culated [Eqs. (17) and (18)] reaction rate constants. It
should be noted that, at the volumetric rate of feeding
the reaction mixture higher than 30 mL min–1, the reac-
tion should be kinetically controlled.
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RUSSIAN JOURNAL OF APPLIED CHEMISTRY Vol. 89 No. 3 2016