Abstract
Kaolinites of all kinds (fine, ‘fireclay,’ ‘type IV,’ etc.), some of which do not expand or expand incompletely with the usual intercalation methods used for comparison, are expanded completely by treatment of dry (110°C) clay with dry CsCl salt, followed by contact with hydrazine for 1 day at 65°C and then with DMSO overnight at 90°C. Comparison treatments were grinding in KOAc, soaking in hydrazine, and Li-DMSO, as well as combination of these. Following the Cs-hydrazine-DMSO treatment, the 7.2 Å spacing of 1:1 dioctahedral layer silicates shifts to 11.2 Å and the 11.2 Å/(7.2 + 11.2 Å) ratio ≃1.0. The trioctahedral 1:1 layer silicates and chlorite are not expanded by the Cs-hydrazine-DMSO procedure.
Резюме
Каолиниты всех типов /мелкозернистый, огнеупорная глина,“тип” и т.д./, некоторые из которых не расширяются или расширяются неполностью при обычных методах интеркалации, использовавшихся для сравнения,были расширены полностью путем обработки сухой /110°C/ глины сухой солью CsCl, после чего следовал контакт с гидрозином в течение 1 дня при 65°C и затем с диметил-сульфоксидом в течение ночи при 90°C. Для сравнения, обработки проводились ацетатом калия, пропиткой гидрозином и Li-диметилсульфоксидом,а также их смесями. После Cs-гидрозин-диметилсульфоксидной обработки промежуток в 7,2Å между силикатными диоктаэдрическими слоями 1:1 расширился до 11,2Å и отношения 11,2Å/ (7,2+11,2Å)=1,0. Силикаты с триоктаэдрическими слоями 1:1 и хлорит не расширились в результате Cs-гидрозин-диметилсульфоксидной обработки.
Kurzreferat
Kaoliniten aller Art (fein,feuerfest,Typ IV usw.) von denen ei nige sich nicht oder nur unvollständig, mit den gewöhnlichen, zum Vergleich benutzten Einlagerungsmethoden ausdehnen, wurden vollständig geschwollen, durch Behandlung des trockenen(110°C) Tons mit trocknem CsCl Salz, und nach folgend mit Hydrazin für einen Tag bei 65°C und dann mit DMSO über Nacht bei 90°C. Verglelchsbehandlungen waren: Vermahlen in KOAc, Einweichen in Hydrazin und Li-DMSO, sowohl wie eine Kombination dieser Methoden. Nach der Cs-Hydrazin-DMSO Behandlung, ändert sich der 7,2A Zwischenraum der 1 /1 Diokta hedrischen Schichtsilikate auf 11,2A und das Verhäitnis 11,2A (7,2+11,2A) ≂ 1,0. Die trioktahedrischen 1 / 1 Schichtsilikate und Chlorite schwellen nicht mit der Cs-Hydrazin-DMSO Methode.
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Jackson, M.L., Abdel-Kader, F.H. Kaolinite Intercalation Procedure for all Sizes and Types with X-Ray Diffraction Spacing Distinctive from other Phyllosilicates. Clays Clay Miner. 26, 81–87 (1978). https://doi.org/10.1346/CCMN.1978.0260201
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DOI: https://doi.org/10.1346/CCMN.1978.0260201