Publication

Oxidation of manganese sulfate to manganese dioxide in 30% sulfuric acid

Christos Comninellis
1990
Journal Articles

Abstract

The electrochem. oxidn. of Mn(II) in H2SO4 (30% wt.) has been studied using cyclic voltammetry. The mechanism was shown to be of the type ECE (Electrochem.-Chem.-Electrochem.). The deposition of MnO2 on the anode can be avoided by inhibiting the chem. reaction step, either by slowing it or by minimizing the mean residence time of Mn(III) ions near this electrode. [on SciFinder (R)]

Official source

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Christos Comninellis
1990
Journal Articles

Abstract

Official source

Related concepts (32)

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.

Manganese dioxide

Manganese dioxide is the inorganic compound with the formula MnO2. This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules. The principal use for MnO2 is for dry-cell batteries, such as the alkaline battery and the zinc–carbon battery. MnO2 is also used as a pigment and as a precursor to other manganese compounds, such as potassium permanganateKMnO4. It is used as a reagent in organic synthesis, for example, for the oxidation of allylic alcohols.

Related publications (22)

Oxidation of manganese sulfate to manganese dioxide in 30% sulfuric acid

Chat with Graph Search

Quantification of Mn(III)-Oxide Redox Activity: Integrating Mediated Electrochemistry with Kinetic and Mass-Transport Modelling

Atomic Layer Deposition of Copper using Cu(II) Hexafluoroacetylacetonate and Diethylzinc: Surface Reaction Mechanisms and Surface Material Selectivity

Prophage induction and acetate availability are associated with distinct Lactiplantibacillus plantarum electrode responses