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Erschienen in: Glass and Ceramics 9-10/2017

06.01.2017 | AT ENTERPRISES AND INSTITUTES

Use of Ultrasonic Processing at Early Stages of LTA Zeolite Synthesis from Metakaolin

verfasst von: N. E. Gordina, V. Yu. Prokof’ev, Yu. N. Kul’pina, N. V. Petukhova, S. I. Gazakhova, O. E. Khmylova

Erschienen in: Glass and Ceramics | Ausgabe 9-10/2017

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Abstract

The influence of ultrasonic processing (22 kHz) of a suspension of metakaolin, aluminum oxide, and sodium hydroxide with molar ratio Al2O3 · 2SiO2: NaOH : Al2O3 = 6 : 12 : 2, followed by heat-treatment and hydrothermal crystallization on LTA zeolite synthesis, is investigated. It is found that by increasing the S : L ratio at the ultrasonic processing stage it is possible to increase the yield of the desired product. The optimal conditions of ultrasonic processing are determined (amplitude 8 μm, time about 10 min). It is shown that under the optimal conditions the degree of crystallinity of LTA zeolite equals 98%. The mechanisms of LTA zeolite synthesis by means of ultrasonic processing and mechano-chemical activation are compared.

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Metadaten
Titel
Use of Ultrasonic Processing at Early Stages of LTA Zeolite Synthesis from Metakaolin
verfasst von
N. E. Gordina
V. Yu. Prokof’ev
Yu. N. Kul’pina
N. V. Petukhova
S. I. Gazakhova
O. E. Khmylova
Publikationsdatum
06.01.2017
Verlag
Springer US
Erschienen in
Glass and Ceramics / Ausgabe 9-10/2017
Print ISSN: 0361-7610
Elektronische ISSN: 1573-8515
DOI
https://doi.org/10.1007/s10717-017-9884-5

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