Bistability in membrane reactors due to membrane inhibition by competitive adsorption of reactants

Maria Anna Murmura; Maria Cristina Annesini; Moshe Sheintuch

doi:10.1016/j.cej.2017.11.094

Bistability in membrane reactors due to membrane inhibition by competitive adsorption of reactants

Maria Anna Murmura^*, Maria Cristina Annesini, Moshe Sheintuch

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Several studies on membrane reactors for hydrogen production have shown that the permeation of hydrogen may be inhibited by the competitive adsorption of one or more of the reactants. This adsorption-inhibition effect, often accounted for in rate expressions of catalytic reactions, may induce the existence of multiple steady state solutions. In this work we investigate the possible presence of bistability in membrane reactors. We start with the study of a mixed membrane reactor, which allows for the analytical derivation of a bistability criterion, and then extend the analysis, numerically, to a fixed bed membrane reactor. Under conditions of an infinitely fast reaction, the bifurcation parameters are dimensionless versions of the equilibrium constant of the reaction, the membrane permeability, and the adsorption constant of the inhibiting reactant. In the Conclusions we discuss the design implications, and assess whether this phenomenon can be realized in practice.

Original language	English
Pages (from-to)	1594-1604
Number of pages	11
Journal	Chemical Engineering Journal
Volume	334
DOIs	https://doi.org/10.1016/j.cej.2017.11.094
State	Published - 15 Feb 2018
Externally published	Yes

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title = "Bistability in membrane reactors due to membrane inhibition by competitive adsorption of reactants",

abstract = "Several studies on membrane reactors for hydrogen production have shown that the permeation of hydrogen may be inhibited by the competitive adsorption of one or more of the reactants. This adsorption-inhibition effect, often accounted for in rate expressions of catalytic reactions, may induce the existence of multiple steady state solutions. In this work we investigate the possible presence of bistability in membrane reactors. We start with the study of a mixed membrane reactor, which allows for the analytical derivation of a bistability criterion, and then extend the analysis, numerically, to a fixed bed membrane reactor. Under conditions of an infinitely fast reaction, the bifurcation parameters are dimensionless versions of the equilibrium constant of the reaction, the membrane permeability, and the adsorption constant of the inhibiting reactant. In the Conclusions we discuss the design implications, and assess whether this phenomenon can be realized in practice.",

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doi = "10.1016/j.cej.2017.11.094",

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T1 - Bistability in membrane reactors due to membrane inhibition by competitive adsorption of reactants

AU - Murmura, Maria Anna

AU - Annesini, Maria Cristina

AU - Sheintuch, Moshe

PY - 2018/2/15

Y1 - 2018/2/15

N2 - Several studies on membrane reactors for hydrogen production have shown that the permeation of hydrogen may be inhibited by the competitive adsorption of one or more of the reactants. This adsorption-inhibition effect, often accounted for in rate expressions of catalytic reactions, may induce the existence of multiple steady state solutions. In this work we investigate the possible presence of bistability in membrane reactors. We start with the study of a mixed membrane reactor, which allows for the analytical derivation of a bistability criterion, and then extend the analysis, numerically, to a fixed bed membrane reactor. Under conditions of an infinitely fast reaction, the bifurcation parameters are dimensionless versions of the equilibrium constant of the reaction, the membrane permeability, and the adsorption constant of the inhibiting reactant. In the Conclusions we discuss the design implications, and assess whether this phenomenon can be realized in practice.

AB - Several studies on membrane reactors for hydrogen production have shown that the permeation of hydrogen may be inhibited by the competitive adsorption of one or more of the reactants. This adsorption-inhibition effect, often accounted for in rate expressions of catalytic reactions, may induce the existence of multiple steady state solutions. In this work we investigate the possible presence of bistability in membrane reactors. We start with the study of a mixed membrane reactor, which allows for the analytical derivation of a bistability criterion, and then extend the analysis, numerically, to a fixed bed membrane reactor. Under conditions of an infinitely fast reaction, the bifurcation parameters are dimensionless versions of the equilibrium constant of the reaction, the membrane permeability, and the adsorption constant of the inhibiting reactant. In the Conclusions we discuss the design implications, and assess whether this phenomenon can be realized in practice.

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U2 - 10.1016/j.cej.2017.11.094

DO - 10.1016/j.cej.2017.11.094

M3 - 文章

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SN - 1385-8947

VL - 334

SP - 1594

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JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

Bistability in membrane reactors due to membrane inhibition by competitive adsorption of reactants

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