碳酸钙气凝胶的制备与表征

4区材料科学 Q2 Engineering Advances in Materials Science and Engineering Pub Date : 2009-05-03 DOI:10.1155/2009/138476

J. Plank, H. Hoffmann, Joachim Schölkopf, W. Seidl, I. Zeitler, Zheng Zhang

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引用次数: 7

摘要

我们报告了一种制备碳酸钙气凝胶的简便方法，该气凝胶由聚集的次生水晶石颗粒组成，其平均直径约为50纳米。在甲醇中，氧化钙与二氧化碳反应，再与二氧化碳进行超临界干燥，采用溶胶-凝胶法合成醇凝胶。得到的整体石不透明、易碎，总体尺寸为6 × 2 × 1厘米。采用x射线粉末衍射、氮吸附法(BET)和扫描电镜对其进行了表征。

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Preparation and Characterization of a Calcium Carbonate Aerogel

We report on a facile method for the preparation of a calcium carbonate aerogel consisting of aggregated secondary vaterite particles with an approximate average diameter of 50 nm. It was synthesized via a sol-gel process by reacting calcium oxide with carbon dioxide in methanol and subsequent supercritical drying of the alcogel with carbon dioxide. The resulting monolith was opaque, brittle and had overall dimensions of 6 × 2 × 1 cm. It was characterized by X-ray powder diffraction, nitrogen adsorption method (BET), and scanning electron microscopy.

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来源期刊

Advances in Materials Science and Engineering Materials Science-General Materials Science

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Advances in Materials Science and Engineering is a broad scope journal that publishes articles in all areas of materials science and engineering including, but not limited to: -Chemistry and fundamental properties of matter -Material synthesis, fabrication, manufacture, and processing -Magnetic, electrical, thermal, and optical properties of materials -Strength, durability, and mechanical behaviour of materials -Consideration of materials in structural design, modelling, and engineering -Green and renewable materials, and consideration of materials’ life cycles -Materials in specialist applications (such as medicine, energy, aerospace, and nanotechnology)