Modeling the Kinetics of Steady-State Attainment for a Simple Pseudo-First-Order Reaction in a Plug-Flow Reactor | Sciact - CRIS-system of Boreskov Institute of Catalysis

Modeling the Kinetics of Steady-State Attainment for a Simple Pseudo-First-Order Reaction in a Plug-Flow Reactor Full article

Journal

Russian Journal of Physical Chemistry A
ISSN: 0036-0244 , E-ISSN: 1531-863X

Output data

Year: 2025, Volume: 99, Number: 12, Pages: 2955–2964 Pages count : 10 DOI: 10.1134/S0036024425702383

Tags

chemical kinetics, plug-flow reactor, pseudo-first-order reaction, simulation, unsteady-state equation, steady state, transition time, analytical solution

Authors

Lysikov A.I. ^1,2 , Malkovich E.G. ² , Shnayder A.V. ^1,2 , Vorobyeva E.E. ^1,2 , Vdovichenko V.A. ^1,2 , Barsukov A.N. ^1,2 , Parkhomchuk E.V. ^1,2 , Okunev A.G. ²

Affiliations

1	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences (BIC SB RAS), Novosibirsk, 630090 Russia
2	Novosibirsk State University (NSU), Novosibirsk, 630090 Russia

A model and a solution method for a plug-flow reactor with pseudo-first-order reactions are proposed. These methods make it possible to identify a dependence of the process duration and the reactor steady-state attainment time on chemical process parameters, such as reactor volume and volumetric feed flow rate. As shown by the calculated data, at least one residence time or inverse volumetric feed flow rate is required for the process to attain steady state. It is also demonstrated that, in a continuous-flow reactor, reactant concentrations always attain steady state sooner than product concentrations; also, the product transition time is independent of the reaction kinetics and is determined by the average mixture contact time within the reactor.

Lysikov A.I. , Malkovich E.G. , Shnayder A.V. , Vorobyeva E.E. , Vdovichenko V.A. , Barsukov A.N. , Parkhomchuk E.V. , Okunev A.G.
Modeling the Kinetics of Steady-State Attainment for a Simple Pseudo-First-Order Reaction in a Plug-Flow Reactor
Russian Journal of Physical Chemistry A. 2025. V.99. N12. P.2955–2964. DOI: 10.1134/S0036024425702383

Submitted:	Mar 20, 2025
Accepted:	Jun 25, 2025

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