### Abstract

Mass transport, accompanied by chemical reaction through membrane reactor has been investigated in the case of varying diffusion coefficient and solubility coefficient. In reality, both parameters might depend on the concentration and/or on the inhomogeneity of the membrane layer. General mathematical models were developed to describe the mass transport, taking into account the external mass transfer resistances as well, when the solubility coefficient can vary, e.g. according to the Langmuir-Hinschelwood adsorption theory or when the value of diffusion coefficient depends on the concentration/anisotropy in the membrane. A general solution has been given that can be applied to most of the mathematical functions of the parameters mentioned. The concentration distribution and the mass transfer rate will be given in closed mathematical forms. The value of the mass transfer rates could be strongly altered by the varying diffusion- and/or solubility coefficient. The mathematical model and the effect of the varying parameters have been discussed in this paper.

Original language | English |
---|---|

Pages (from-to) | 723-730 |

Number of pages | 8 |

Journal | Chemical Engineering Research and Design |

Volume | 86 |

Issue number | 7 |

DOIs | |

Publication status | Published - Jul 2008 |

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### Keywords

- Catalytic membrane layer
- Dispersed catalyst particles
- Nonlinear mass transfer
- Variable diffusion coefficient
- Variable solubility coefficient

### ASJC Scopus subject areas

- Chemical Engineering(all)
- Chemistry(all)

### Cite this

**Mass transport with varying diffusion- and solubility coefficient through a catalytic membrane layer.** / Nagy, E.

Research output: Contribution to journal › Article

}

TY - JOUR

T1 - Mass transport with varying diffusion- and solubility coefficient through a catalytic membrane layer

AU - Nagy, E.

PY - 2008/7

Y1 - 2008/7

N2 - Mass transport, accompanied by chemical reaction through membrane reactor has been investigated in the case of varying diffusion coefficient and solubility coefficient. In reality, both parameters might depend on the concentration and/or on the inhomogeneity of the membrane layer. General mathematical models were developed to describe the mass transport, taking into account the external mass transfer resistances as well, when the solubility coefficient can vary, e.g. according to the Langmuir-Hinschelwood adsorption theory or when the value of diffusion coefficient depends on the concentration/anisotropy in the membrane. A general solution has been given that can be applied to most of the mathematical functions of the parameters mentioned. The concentration distribution and the mass transfer rate will be given in closed mathematical forms. The value of the mass transfer rates could be strongly altered by the varying diffusion- and/or solubility coefficient. The mathematical model and the effect of the varying parameters have been discussed in this paper.

AB - Mass transport, accompanied by chemical reaction through membrane reactor has been investigated in the case of varying diffusion coefficient and solubility coefficient. In reality, both parameters might depend on the concentration and/or on the inhomogeneity of the membrane layer. General mathematical models were developed to describe the mass transport, taking into account the external mass transfer resistances as well, when the solubility coefficient can vary, e.g. according to the Langmuir-Hinschelwood adsorption theory or when the value of diffusion coefficient depends on the concentration/anisotropy in the membrane. A general solution has been given that can be applied to most of the mathematical functions of the parameters mentioned. The concentration distribution and the mass transfer rate will be given in closed mathematical forms. The value of the mass transfer rates could be strongly altered by the varying diffusion- and/or solubility coefficient. The mathematical model and the effect of the varying parameters have been discussed in this paper.

KW - Catalytic membrane layer

KW - Dispersed catalyst particles

KW - Nonlinear mass transfer

KW - Variable diffusion coefficient

KW - Variable solubility coefficient

UR - http://www.scopus.com/inward/record.url?scp=56349091485&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=56349091485&partnerID=8YFLogxK

U2 - 10.1016/j.cherd.2008.03.010

DO - 10.1016/j.cherd.2008.03.010

M3 - Article

AN - SCOPUS:56349091485

VL - 86

SP - 723

EP - 730

JO - Chemical Engineering Research and Design

JF - Chemical Engineering Research and Design

SN - 0263-8762

IS - 7

ER -