Direct Oxidation of Dimethylsulphoxide and Reduction of Maleic Acid in Methanesulphonic Acid Medium
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Direct Oxidation of Dimethylsulphoxide and
Reduction of Maleic Acid in Methanesulphonic Acid
Medium
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| Creator |
Devadoss, V.
Basha, C.A. Jayaraman, K. |
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| Subject |
Electroorganic
Pollution Control |
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| Description |
The direct electro oxidation of dimethylsulphoxide (DMSO) to dimethylsulphone
(DMSO2) at a Pb/PbO2 anode and electro reduction of maleic acid (MA)
to succinic acid (SA) at stainless steel cathode have been has been carried out in
methane sulphonic acid (MSA) medium in a batch divided cell. It is to be noted
that, as methane sulphonic acid medium (MAS) is biodegradable, it is a preferred
medium for the electrochemical reactions.
The process parameters such as concentration of MSA, DMSO and current density
have been critically examined and the comparative performances of Pb/PbO2
with TSIA electrode as well as the reusing of electrolyte under optimum conditions
have been investigated. The reaction parameters such as acid concentration,
current density, the use of divided and undivided cells, etc. have been studied on
electrochemical reduction of MA to SA.
In the case of direct electro oxidation of dimethylsulphoxide to dimethylsulphone,
the current efficiency on TSIA anode has been around 60- 65% while that with
Pb/PbO2 has been more than 90%. The electro reduction of MA to SA has given
current efficiency around 65 – 70%. Based on the result obtained on trials, the
optimum parameters of the reaction found to be 1.0 M acid concentration and 5.0
A dm−2 current density. Divided cell has given good results when compared to
undivided cell.
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| Publisher |
The Berkeley Electronic Press
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| Date |
2009
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/372/1/063-2009.pdf
Devadoss, V. and Basha, C.A. and Jayaraman, K. (2009) Direct Oxidation of Dimethylsulphoxide and Reduction of Maleic Acid in Methanesulphonic Acid Medium. International Journal of Chemical Reactor Engineering, 7 (37). ISSN 1542-6580 |
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| Relation |
http://cecri.csircentral.net/372/
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