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6. Mai 2024 · Abstract. In this study, a sodalite-type zeolite (SOD) was synthesized through the alkaline fusion of kaolin and crystallized under ambient pressure conditions, without the need for autoclaves and high temperatures. The influence of the ratio between fused kaolin and water (g/mL) during crystallization was evaluated.
24. Mai 2024 · Recently, there has been a growing interest in kaolin as a low-cost alternative natural raw material for zeolite synthesis. In this case, the synthesis route includes kaolin pretreatment steps. For the development of feasible technology, it is necessary to have insight into new and basic synthesis steps and prove that the kaolin ...
24. Mai 2024 · This band exists primarily from the structural hydroxyls in kaolinite, reflecting the abundance of OH groups on KC's surface, contributing to its hydrophilic nature. The existing bands at 1111, 1027, and 997 cm −1 accompany the asymmetric Si–O stretching vibrations bonds and silanol (Si–OH) groups.
11. Mai 2024 · cPAni_K exhibits typical PAni and kaolinite bands. The stretching frequency of –OH groups, which appeared as a well-defined quartet (3700, 3670, 3650 and 3620 cm −1), the absorption band at 1115, 1002 and 1032 cm −1 represent the typical Si-O stretching frequency of kaolinite.
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6. Mai 2024 · The infrared analysis was conducted to identify the characteristic bands of natural indigo and kaolinite in the composite sample, as illustrated in Fig. 2C and D. In the infrared spectrum of both natural and synthetic indigo, it can be seen a broadband in the range between 3100 and 3500 attributed to the stretching vibration of the N ...
23. Mai 2024 · Drehscheibenfest 2024. Veröffentlicht am 30. April 2024 von Sebastian. Auch in diesem Jahr feiern wir mit euch die Eisenbahn rund um unsere altehrwürdige Drehscheibe! Natürlich gibt es wieder viele Attraktionen:Die Eisenbahnsammlung in Kooperation mit unseren Regensburger Freunden der RSWE […] Weiterlesen. Allgemein.
