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Date Published: 27/02/2014
Online Published: 27/02/2014
Abstract Views: 46
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DOI: https://doi.org/10.52714/dthu.7.2.2014.93
Issue
No. 7 (2014): Part B - Natural Sciences
Section
Natural Sciences Issue (Vietnamese)
How to Cite
Bui, V. T. (2014). Nghiên cứu điều chế và đặc trưng cấu trúc của vật liệu bentonit biến tính nhôm. Dong Thap University Journal of Science, 7, 24-30. https://doi.org/10.52714/dthu.7.2.2014.93

Nghiên cứu điều chế và đặc trưng cấu trúc của vật liệu bentonit biến tính nhôm

Van Thang Bui

Main Article Content

Abstract

Alumina modified bentonite is obtained by exchanging the medial-layer hydrated cation of bentonite by alumina polyoxoanion. The nature of alumina modified bentonite and that of non-modified bentonite are determined by such modern analytic methods as XRD, SEM, and BET. The alumina modified bentonite via alumina polyoxoanion has the layer-gap increase from 12.61 to 18Ǻ. The layer-gap and that of the medial layer of alumina modified bentonite are determined by the density of modified polyoxoanion, aging time of solution and OH-/Al3+ ratio. The OH/Al3+ratio of 2.0 is favorable for alumina modified bentonite via polyoxoanion. SEM images show that the medial-layer hydrated cation of bentonite has interacted with polyoxoanion during the operation.

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Keywords

Bentonite, Montmorillonite, Modified bentonite, Alumina modified bentonite

References

[1]. Altunlu M. and Yapar S. (2007), “Effect of OH_/Al3+ and Al3+/clay ratios on the ad- sorption properties of Al-pillared bentonites”, Colloids and Surfaces A: Physiscochem. Eng. Aspects, (306), pp. 88-94.
[2]. Chae H. J., Nam I. N., Ham S. W, Hong S. B. (2001), “Physicochemical characteris- tics of pillared interlayered clays”, Catalysis Today, (68), pp. 31-40.
[3]. Gu L., Xu J., Lu L., Liu B., Zhang H., Yu X., Luo Z. (2011), “Dissolved organic ni- trogen (DON) adsorption by using Al-pillared bentonite”, Desalination, (269), pp. 206-213.
[4]. Lahodny-Sarc O. and Khalaf H. (1994), “Some considerations of the influence of source clay material and synthesis conditions on the properties of Al-pillared clays”, Applied Clay Science, (8), pp. 405-415.
[5]. Ohtsuka K. (1997), “Preparation and properties of two-dimensional microporous pillared interlayered solids”, Chem. Mater., (9), pp. 2039-2050.
[6]. Yan L. G., Xu Y. Y., Yu H. Q., Xin X. D., Wei Q., Du B. (2010), “Adsorption of phosphate from aqueous solution by hydroxy-aluminum, hydroxy-ion and hydroxy-iron- alumium pillared bentonites”, Journal of Hazardous Materials, (179), pp. 244-250.

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