Zur Kenntnis der Molekulargrößen gelöster Kieselsäuren

Gruner, Erhard; Elöd, J.

doi:10.1002/zaac.19322080312

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The Sol-gel Transformation or Setting Of The Gel1

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1934

1979

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Cited by 5 publications

(2 citation statements)

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“…This has been shown by many investigators. Gruner and Elód (27) found an apparent molecular weight of 60 in a freshly prepared sol, as did Willstátter, Kraut, and Lobinger (80). Treadwell (72) reported the first value to be 149.…”

Section: The Sol-gel Transformation or Setting Of The Gelsupporting

confidence: 54%

Theories for the Mechanism of the Setting of Silicic Acid Gels.

Hurd¹

1938

Chem. Rev.

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Section: The Sol-gel Transformation or Setting Of The Gelsupporting

confidence: 54%

Theories for the Mechanism of the Setting of Silicic Acid Gels.

Hurd¹

1938

Chem. Rev.

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“…To compare with table 2, note that a mixture containing 3.9 per cent of silica contains about 0.65 gram-mole of silica per liter. 2 For the development reference should be made to the paper cited. Possibly one of the optical methods, such as that of Prasad, Mehta, and Desai (11), would show that these very dilute mixtures eventually passed through the same condition through which less dilute mixtures pass when they set.…”

Section: Resultsmentioning

confidence: 99%

Studies on Silicic Acid Gels. XI. The Effect of Concentration of Silica upon the Time of Set.

Hurd¹,

Sheffer²

1941

J. Phys. Chem.

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Recently one of us has noted that the relation between concentration of silica and the time of set of a silicic acid gel should be studied (3). Very few data have been published bearing on this relation, although Batchelor's (1) recent paper gives some curves for a study in which potassium silicate and mixed mineral acids were used.The present paper reports our study of this relation, using solutions of sodium silicate and acetic acid. These solutions were used both for conformity with previous studies from this laboratory and because of satisfactory control and constancy of pH in these mixtures. EXPERIMENTALThe same technique was used as has been used in previous papers of this series (7, 6, 5, 4). The silicate solution titrated 1.21 N in sodium hydroxide equivalent. It was prepared from "E" brand sodium silicate. The time of set was found by the tilted-rod method (7). The mixtures were carefully thermostated. All pH values were measured with a quinhydrone apparatus, using electrodes of bare platinum wire (5). The silica concentration was varied by changing the relative amount of sodium silicate solution used.

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Zum Mechanismus der Aggregation der Kieselsäure aus Natriumsilikatlösungen. I. Die in sauren Lösungen beständige niedermolekulare Kieselsäure

Tourky¹

1939

Z. Anorg. Allg. Chem.

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Zur Kenntnis der Molekulargrößen gelöster Kieselsäuren

Cited by 5 publications

References 6 publications

Theories for the Mechanism of the Setting of Silicic Acid Gels.

Theories for the Mechanism of the Setting of Silicic Acid Gels.

Studies on Silicic Acid Gels. XI. The Effect of Concentration of Silica upon the Time of Set.

Zum Mechanismus der Aggregation der Kieselsäure aus Natriumsilikatlösungen. I. Die in sauren Lösungen beständige niedermolekulare Kieselsäure

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