Reactor analysis of a chlor—alkali membrane cell

Chandran, Ramkumar; Chin, D.‐T.

doi:10.1016/0013-4686(86)80058-5

Cited by 33 publications

(18 citation statements)

References 10 publications

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“…Results obtained in this work are comparable to those reported by Chandran et al 21 for a similar PP cell but with a higher electroactive area (34.3 cm 2 ). It is worth mentioning that the material of the electrodes and the cation-exchange membrane used by Chandran et al 21 are different from the ones used in this work (see details in Figure 7). However, results for both PP cells are virtually the same.…”

Section: Comparison With the Parallel Plate Cell And Literature Datasupporting

confidence: 91%

Intensification of the chlor-alkali process by using a spinning disc membrane electrolyzer

Mendoza

Moshtarikhah

Langenhan

et al. 2017

Chemical Engineering Research and Design

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Section: Comparison With the Parallel Plate Cell And Literature Datasupporting

confidence: 91%

Intensification of the chlor-alkali process by using a spinning disc membrane electrolyzer

Mendoza

Moshtarikhah

Langenhan

et al. 2017

Chemical Engineering Research and Design

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“…They mentioned that during the membrane potential measurement, two Luggin capillaries could not be placed with sufficient accuracy (the zero gap configuration had a gap of 0.5-1 mm). Chandran et al [36] also reported similar experimental difficulties, resulting in large measured membrane potentials. Table 5.…”

Section: Model Validation For Low Current Densitiesmentioning

confidence: 79%

Maxwell–Stefan model of multicomponent ion transport inside a monolayer Nafion membrane for intensified chlor-alkali electrolysis

et al. 2019

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A mathematical model based on a generalized Maxwell-Stefan equation has been developed to describe multicomponent ion and water transport inside a cation-exchange membrane. This model has been validated using experimental data and has been used to predict concentration profiles, membrane potential drop, and transport numbers of ions and water for the chlor-alkali process at increased current densities. Several improvements have been made to previously developed Maxwell-Stefan models. In our model, the generalized Maxwell-Stefan equation is written in terms of concentration instead of mole fraction and the fixed group (membrane) concentration is assumed to be constant. We have adapted the Augmented matrix method using the built-in partial differential equation parabolic elliptic (pdepe) solver in Matlab®, and both the concentration and the electrical potential gradients have been solved simultaneously. The boundary conditions are determined with the Donnan equilibrium at the membrane-solution interface. We have also employed semi-empirical correlations to define the Maxwell-Stefan diffusivities inside the membrane. For the bulk diffusivities, we applied the correlations for the concentrated solution instead of the values at infinite dilution. With the diffusivities presented in this work, the model shows a better fit to the experimental data than with previously reported fitted diffusivities. Prediction of the sodium transport number and water transport number is generally good, whereas the deviations with regard to membrane potential might also be related to issues with the experimental data. The model predicts an increase in both sodium and water transport numbers at increased current density operation of chlor-alkali production.

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“…One of the valuable responses which are directly proportional to total energy consumed by an electrolysis cell is the current efficiency. The caustic current efficiency (CCE) as cell performance was thus measured according to the procedure described in Section 2 and calculated based on the following equation [14]:…”

Section: Cathode Performancementioning

confidence: 99%

Comparative Study on Application of Bimetallic Pt-Based Alloy Electrocatalysts in Advanced Chlor-Alkali Electrolysis

Farzami¹,

Joudaki²,

Hashemi³

2011

ENG

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Application of an oxygen-depolarized cathode will contribute to energy saving in chlor-alkali electrolysis. For this purpose, the development of high-performance cathode with the best electrocatalyst is essential. Using bimetallic Pt-based alloy electrocatalysts including PtPd and PtAg carbon-supported in oxygen-depolarized cathode chlor-alkali cell has been shown to have the high cell performance. This study presents application of PtRu carbon supported electrocatalyst oxygen-depolarized cathode and performance comparison of cells with carbon-supported PtRu, PtPd and PtAg electrocatalysts cathodes using the same DSA-Cl 2 anode. Results show that there are quite similarity between the effects of various factors on the caustic current efficiency (CCE) in a zero-gap oxygen-depolarized chlor-alkali cells employing carbon-supported PtPd, PtRu and PtAg electrocatalysts. Besides, it seems that the PtPd/C electrocatalyst cathode has relatively higher performance than the other cathodes with PtAg/C and PtRu/C electrocatalysts in zero-gap chlor-alkali cells.

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Reactor analysis of a chlor—alkali membrane cell

Cited by 33 publications

References 10 publications

Intensification of the chlor-alkali process by using a spinning disc membrane electrolyzer

Intensification of the chlor-alkali process by using a spinning disc membrane electrolyzer

Maxwell–Stefan model of multicomponent ion transport inside a monolayer Nafion membrane for intensified chlor-alkali electrolysis

Comparative Study on Application of Bimetallic Pt-Based Alloy Electrocatalysts in Advanced Chlor-Alkali Electrolysis

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