Tuning of textural properties of germanosilicate zeolites ITH and IWW by acidic leaching

Tuning of textural properties of germanosilicate zeolites ITH and IWW by acidic leaching

The possibility to adjust textural properties of ITH and IWW zeolites by the variation of conditions (e.g. temperature, pH, duration) of acidic leaching was shown. While the growth of the temperature of acid treatment caused the increasing amount of leached Ge atoms and enhancing volumes of both mic...

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Veröffentlicht in:Journal of energy chemistry 2016-03, Vol.25 (2), p.318-326
Hauptverfasser: Kasneryk, Valeryia I., Shamzhy, Mariya V., Opanasenko, Maksym V., Čejka, Jiří
Format: Artikel
Sprache:eng
Schlagworte:
Accessibility
Degermanation
Extraction
Germanium
ITH
IWW
Leaching
Silicon
Textural properties
Tuning
Zeolites
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Beschreibung
Zusammenfassung:The possibility to adjust textural properties of ITH and IWW zeolites by the variation of conditions (e.g. temperature, pH, duration) of acidic leaching was shown. While the growth of the temperature of acid treatment caused the increasing amount of leached Ge atoms and enhancing volumes of both micro and mesopores at 80 °C, the mesopore volume in ITH (Si/Ge = 3.4 and 5.8) and IWW (Si/Ge = 3.3) zeolites changed with the duration of the treatment (pH = 2; T = 80 °C) as follows: 96 h 
ISSN:2095-4956
DOI:10.1016/j.jechem.2015.12.003