Paper Title:
In Situ Synthesis of Zeolite NaKL In Highly-Enriched Spinel Matrix
  Abstract

Zeolite NaKL was in-situ crystallized under static condition with kaolin microspheres calcined at 980 °C as silicon and aluminium sources. Influences of hydrothermal synthesis conditions such as the mole ratio of n(K2O)/n(Na2O), n(OH-)/n(SiO2) and crystallizaion time on crystallization of zeolite L were studied in detail. The crystal phase and morphology of the as-prepared zeolite samples were characterized by X-ray diffraction (XRD) and scanning electronic microscopy (SEM). The results showed that the as-synthesized samples owned characteristic peaks of zeolite L with high crystallinity and were covered uniformly by regular crystal of zeolite L on its kaolin microsphere surface , which maintained complete ball shape as before. The optimum conditions to get zeolite NaKL with high crystallinity by this method were found to be the mole ratio of n(K2O)/n(Na2O) =7:3 and n(OH-)/n(SiO2) =0.50 in the reaction mixture, an aging of the reactants at room temperature for 30 h and crystallization temperature 120 °C for 24 h.

  Info
Periodical
Advanced Materials Research (Volumes 236-238)
Edited by
Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao
Pages
1045-1048
DOI
10.4028/www.scientific.net/AMR.236-238.1045
Citation
S. L. Guo, Z. Y. Yu, Y. L. Chen, X. X. Chen, "In Situ Synthesis of Zeolite NaKL In Highly-Enriched Spinel Matrix", Advanced Materials Research, Vols. 236-238, pp. 1045-1048, 2011
Online since
May 2011
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$32.00
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