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An investigation of the nucleation/crystallization kinetics of nanosized colloidal faujasite zeolites
Luleå tekniska universitet.
Luleå tekniska universitet.
2002 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 14, no 3, p. 1319-1324Article in journal (Refereed) Published
Abstract [en]

two-stage varying-temperature technique was utilized to study the nucleation/crystallization kinetics of nanosized faujasite zeolites from clear solutions. At 100 C, the nucleation period of zeolite Y was determined to be about 6.5 days, which extended over almost the whole period of crystal growth. The crystallization kinetics of colloidal zeolite Y differed from those for another clear solution, colloidal zeolite system, namely, TPA-silicalite-1, where the nucleation and crystal growth were found to occur as separate processes. Despite the occurrence of simultaneous nucleation and crystal growth, the colloidal zeolite Y product had a crystal size distribution similar to that for TPA-silicalite-1. In addition, the influence of the growth-limiting nutrient (Na+) on the crystallization of zeolite Y was investigated. The sodium concentration in the synthesis solution could be controlled below a critical level to avoid the nucleation of zeolite A.

Place, publisher, year, edition, pages
2002. Vol. 14, no 3, p. 1319-1324
National Category
Chemical Process Engineering
Research subject
Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-3503DOI: 10.1021/cm011242gScopus ID: 2-s2.0-0036202262Local ID: 155be720-9213-11db-8975-000ea68e967bOAI: oai:DiVA.org:ltu-3503DiVA, id: diva2:976361
Note

Validerad; 2002; 20060929 (bajo)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Sterte, Johan

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