To the Problem of the "Capacity" of Layered Silicates in Their Mechanochemical Reactions with Organic Acids
IRINA A. VORSINA, ANTONINA P. BARINOVA AND NIKOLAY Z. LYAKHOV
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
of the Russian Academy of Sciences, Ul. Kutateladze 18, Novosibirsk 630128 (Russia), E-mail: grig@solid.nsk.su
Pages: 303-311
Abstract
The "capacity" of layered silicates in mechanochemical neutralization reactions with organic acids has been investigated. It is established that the "capacity" of silicate depends on the nature of the acids and silicate. In reactions with acids readily dissociating in water solutions, the "capacity" of talc is maximum: molar ratio talc:acid=1:2, 1 : 1, and 3 : 2 for unsaturated mono-, bi-, and tribasic acids, respectively. For the same acids, the maximum "capacity" of kaolinite is m. r. kaolinite : acid ≈ 1:0.5. In the case of saturated monocarboxylic acids, m. r. talc : acid < 1 : 1; for aromatic acids, m. r. talc : acid = 1 : 1, kaolinite: acid ≤1 : 0.25.
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