In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Hums E, Musyoka NM, Baser HH, Inayat A, Schwieger W
Zeitschrift: Research on Chemical Intermediates
Verlag: Springer Verlag (Germany)
Jahr der Veröffentlichung: 2015
Band: 41
Seitenbereich: 4311-4326
ISSN: 0922-6168


Abstract


The kinetics of synthesis of zeolites Na-A and Na-X from fused South African class F coal fly ash were studied by using an ultrasound device as a real-time, in-situ diagnostic tool. Ex-situ techniques, for example XRD, ICP, and SEM, were used to complement the results of the kinetic study. Reaction rate, reaction order, and activation energy of crystallization processes in clear solution extracted from fused fly ash were calculated on the basis of ultrasound signal data recorded at different crystallization temperatures. Zeolite Na-X and zeolite Na-A crystals were both obtained without ageing. The zeolite Na-X sample showed contaminations of zeolite P and sodalite depending on the synthesis temperature. For zeolite Na-A the impact of ageing on the process of formation was also studied.



FAU-Autoren / FAU-Herausgeber

Baser, Hasan-Hüseyin Dr.-Ing.
Professur für Technische Chemie (Reaktionstechnik)
Inayat, Alexandra Dr.-Ing.
Lehrstuhl für Chemische Reaktionstechnik
Schwieger, Wilhelm Prof. Dr.
Professur für Technische Chemie (Reaktionstechnik)


Autor(en) der externen Einrichtung(en)
University of the Western Cape (UWC)


Zitierweisen

APA:
Hums, E., Musyoka, N.M., Baser, H.-H., Inayat, A., & Schwieger, W. (2015). In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash. Research on Chemical Intermediates, 41, 4311-4326. https://dx.doi.org/10.1007/s11164-014-1531-y

MLA:
Hums, Eric, et al. "In-situ ultrasound study of the kinetics of formation of zeolites Na-A and Na-X from coal fly ash." Research on Chemical Intermediates 41 (2015): 4311-4326.

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Zuletzt aktualisiert 2018-05-07 um 01:23