Controlling Selectivity in the Chlorine Evolution Reaction over RuO2-Based Catalysts

In the industrially important Chlor‐Alkali process, the chlorine evolution reaction (CER) over a ruthenium dioxide (RuO2) catalyst competes with the oxygen evolution reaction (OER). This selectivity issue is elucidated on the microscopic level with the single‐crystalline model electrode RuO2(110) by...

Full description

Saved in:
Bibliographic Details
Published inAngewandte Chemie International Edition Vol. 53; no. 41; pp. 11032 - 11035
Main Authors Exner, Kai S., Anton, Josef, Jacob, Timo, Over, Herbert
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 06.10.2014
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
EditionInternational ed. in English
Subjects
chlorine evolution
density functional calculations
electrocatalysis
ruthenium dioxide
selectivity
selectivity
chlorine evolution
density functional calculations
electrocatalysis
ruthenium dioxide
Online AccessGet full text

Cover

More Information
Summary:In the industrially important Chlor‐Alkali process, the chlorine evolution reaction (CER) over a ruthenium dioxide (RuO2) catalyst competes with the oxygen evolution reaction (OER). This selectivity issue is elucidated on the microscopic level with the single‐crystalline model electrode RuO2(110) by employing density functional theory (DFT) calculations in combination with the concept of volcano plots. We demonstrate that one monolayer of TiO2(110) supported on RuO2(110) enhances the selectivity towards the CER by several orders of magnitudes, while preserving the high activity for the CER. This win‐win situation is attributed to the different slopes of the volcano curves for the CER and OER. Being selective: The selectivity in the industrially important Chlor‐Alkali process has been elucidated on the microscopic level through a combination of DFT calculations and volcano plots. A single layer of TiO2(110) grown on RuO2(110) increases the selectivity between the chlorine and oxygen evolution reactions (CER and OER, respectively) by several orders of magnitude, while keeping the high activity for CER practically constant.
Bibliography:istex:AAC3C1CADBD3E6B21650AB05D4CB77D00EE6BABE
ark:/67375/WNG-JB91VJ0W-H
K.S.E. acknowledges financial support by the Fonds der Chemischen Industrie (FCI) through a PhD scholarship. H.O. was supported by the LOEWE program STORE_E within the Laboratory of Materials Research at the JLU. T.J. acknowledges support from the European Research Council through the ERC-Starting Grant THEOFUN (Grant Agreement No. 259608). We thank the DFG (Deutsche Forschungsgemeinschaft) for financial support through the priority program (SPP1613).
ArticleID:ANIE201406112
European Research Council - No. 259608
Fonds der Chemischen Industrie (FCI)
DFG (Deutsche Forschungsgemeinschaft)
K.S.E. acknowledges financial support by the Fonds der Chemischen Industrie (FCI) through a PhD scholarship. H.O. was supported by the LOEWE program STORE_E within the Laboratory of Materials Research at the JLU. T.J. acknowledges support from the European Research Council through the ERC‐Starting Grant THEOFUN (Grant Agreement No. 259608). We thank the DFG (Deutsche Forschungsgemeinschaft) for financial support through the priority program (SPP1613).
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201406112