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Mechanochemical reactions in alkali halide pressed disks

✍ Scribed by J. Fernández-Bertrán; E. Reguera

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
674 KB
Volume
93
Category
Article
ISSN
0167-2738

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✦ Synopsis

Mechanochemical reactions

that take place when milling and pressing analytes with KBr to form a disk suitable for IR spectral work are reviewed. The topic is extended to other alkali halides matrices. The literature from 1952 is surveyed from an analytical point of view. Several reactions are discussed at length with emphasis on the nature of the products. The mechanism and the factors affecting the mechanochemical changes are discussed in detail for copper sulphate, alkaline and transition metal ferricyanides, and Ag, Hg and Pb salts.

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The feasibility of quantitative photochemical reactions of organic compounds in the solid alkali halide disk, usually used for the study of infrared spectroscopy has been explored. Thadisks were prepared by mixing maleic acid, uranyl nitrate and potassium bromide. Ultraviolet light was used for the