Publication

Electrochemical oxidation of manganese(II) to permanganate (MnO4-) in the presence of silver(I) catalyst

Christos Comninellis
1991
Journal Articles

Abstract

It is confirmed that Ag(I) is a very effective catalyst for the oxidn. of Mn(II) to permanganate. At anodic potentials below + 1300 mV (vs. Hg/Hg2SO4.K2SO4 ref. electrode) in 30% H2SO4 at 10 Deg, the current efficiency of permanganate formation is high; above 1300 mV AgO is deposited at the anode and the current efficiency of permanganate decreases due to the side reaction of oxygen evolution. [on SciFinder (R)]

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Christos Comninellis
1991
Journal Articles

Abstract

Official source

Related concepts (32)

Anode

An anode is an electrode of a polarized electrical device through which conventional current enters the device. This contrasts with a cathode, an electrode of the device through which conventional current leaves the device. A common mnemonic is ACID, for "anode current into device". The direction of conventional current (the flow of positive charges) in a circuit is opposite to the direction of electron flow, so (negatively charged) electrons flow out the anode of a galvanic cell, into an outside or external circuit connected to the cell.

Manganese

Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels. It improves strength, workability, and resistance to wear. Manganese oxide is used as an oxidising agent; as a rubber additive; and in glass making, fertilisers, and ceramics. Manganese sulfate can be used as a fungicide.

Electrode

An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or air). Electrodes are essential parts of batteries that can consist of a variety of materials depending on the type of battery. The electrophore, invented by Johan Wilcke, was an early version of an electrode used to study static electricity. Electrodes are an essential part of any battery. The first electrochemical battery made was devised by Alessandro Volta and was aptly named the Voltaic cell.

Related publications (1)

Electrochemical oxidation of manganese(II) to permanganate (MnO4-) in the presence of silver(I) catalyst

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