Analytical study of the variation of physico-chemical and structural properties of a Kieselgühr during its decarbonation
Analytical study of the variation of physico-chemical and structural properties of a Kieselgühr during its decarbonation
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DOI：
10.1051/analusis:1998128
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发表时间：
1998-05
期刊：
影响因子：
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通讯作者：
B. Hamdi;Z. Kessaïssia;J. Donnet;T. K. Wang
中科院分区：
文献类型：
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作者：
B. Hamdi;Z. Kessaïssia;J. Donnet;T. K. Wang
本文采用原子吸收光谱、红外光谱、X射线衍射、气体吸附、孔隙率测定和显微镜等分析技术，研究了阿尔及利亚硅藻土的理化性质和结构。结果表明，天然产物中碳酸钙污染严重。然而，它呈现出有趣的多孔性。经盐酸脱碳酸和热处理（1000 °C）后，得到了硅相纯、孔隙率高的硅藻土。经处理的产品对于过滤和澄清应用可能是非常有趣的。
The physico-chemi cal properties and the structure/texture of a Kieselguhr , of Algerian origin, have been investigated in this study by using several analytical techniques (atomic absorption spectroscop y, IR, XRD, gas adsorption, porosimetry and microscopies). The results show that the natural product is contaminated heavily by calcium carbonate. Ne vertheless, it presents an interesting porosity . After decarbonation by HCl acid and thermal (1 000 °C) treatments, we obtained the Kieselguhr with pure silica phase and well developed porosity. The treated product could be very interesting for filtr ation and clarification applications.