In-situ ultrasonic monitoring of zeolite A crystallization from coal fly ash

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dc.contributor.authorMusyoka, Nicholas
dc.contributor.authorPetrik, Leslie
dc.contributor.authorHums, Eric
dc.contributor.authorBaser, Hasan
dc.contributor.authorSchwieger, Wilhelm
dc.date.accessioned2013-09-02T13:09:01Z
dc.date.available2013-09-02T13:09:01Z
dc.date.issued2012
dc.description.abstractIn this study, high phase purity of zeolite A was prepared from coal fly ash precursors. The molar regime of both the clear solution extract and unseparated fly ash slurry was adjusted to achieve the right composition for zeolite A crystallization. The formation process for zeolite A from coal fly ash precursors was monitored in detail using an in situ ultrasonic system and was complemented by use of ex situ techniques such as XRD, FTIR, SEM and FTIR. The findings from both the in situ ultrasonic monitoring process and ex situ techniques clearly contributed significantly in unmasking the formation process of zeolite A from coal fly ash compared to previous studies reported in the literature. The study also enriches the existing body of literature by deeply investigating the gel–solution–crystal interactions starting from this complex feedstock. Comparable ultrasonic signals were generated when both clear and unseparated fly ash based precursor solutions were used during the zeolite synthesis process.en_US
dc.description.accreditationWeb of Scienceen_US
dc.identifier.citationMusyoka, N.M., et al. (2012). In situ ultrasonic monitoring of zeolite A crystallization from coal fly ash. Catalysis Today, 190 (1): 38–46en_US
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/10566/708
dc.language.isoenen_US
dc.privacy.showsubmitterfalse
dc.publisherElsevieren_US
dc.rightsThis is the author postprint version of an article by Elsevier. The file may be freely used, provided that acknowledgement of the source is given.
dc.source.urihttp://dx.doi.org/10.1016/j.cattod.2012.03.023
dc.status.ispeerreviewedtrue
dc.subjectIn situen_US
dc.subjectUltrasounden_US
dc.subjectCoal fly ashen_US
dc.subjectZeolite Aen_US
dc.subjectMechanismen_US
dc.subjectAgeing processen_US
dc.titleIn-situ ultrasonic monitoring of zeolite A crystallization from coal fly ashen_US
dc.typeArticleen_US

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