Abbau von Quarz mit Brenzkatechin |
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Authors: | R Bach H Sticher |
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Institution: | (1) Agrikulturchemisches Institut, Eidgenössische Technische Hochschule, Zürich, Schweiz |
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Abstract: | Summary Fine divided HF-etched quartz was dissolved in a 0.2M solution of pyrocatechol at pH 9.6. Between 17 and 40 °C the dissolution rate (v
s
) follows the equation: logv
s
=0.0295 T-20.87 At 25 °Cv
s
amounts to 0.8 · 10–12 g cm–2 sec–1. With several phenols the dissolution rate of quartz decreases in the order: pyrocatechol > pyrogallol > 2, 3-dihydroxynaphthalene. |
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Keywords: | |
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