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Computer‐Controlled Precipitation of Metal Hydroxides and Hydrous Oxides—Preparation of Manganese Dioxide Having Uniform Particle Sizes
Author(s) -
Buss Dieter H.,
Schaumberg Gottfried,
Glemser Oskar
Publication year - 1985
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198510571
Subject(s) - manganese , reagent , mixing (physics) , particle size , inorganic chemistry , stoichiometry , metal , precipitation , particle (ecology) , materials science , chemistry , chemical engineering , metallurgy , geology , physics , oceanography , engineering , quantum mechanics , meteorology
Manganese dioxide with both very small and very large surface areas and uniform particle sizes was prepared from Mn(NO 3 ) 2 and KMnO 4 at pH 1 and 2 and at pH 0 (see figure), respectively. A computer controlled the mixing of the reagents so that the potential remained constant. The reagents were used in nearly stoichiometric amounts.