CaCO₃ whiskers were synthesized controllably by introducing simulated flue gas containing CO₂ and N₂ into a CaSO₄ suspension. The effects of solution pH, reaction temperature, and simulated flue gas on the formation of CaCO₃ whiskers were studied. The growth mechanism and growth model of CaCO₃ whiskers had also been provisionally recommended. The reaction product was characterized by scanning electron microscopy analysis, thermogravimetric analysis, and X‐ray diffraction analysis. CaCO₃ whiskers with 97% purity were synthesized at pH 7.5, 80°C, 0.1 L/min CO₂ flow rate, and 16.7% CO₂ purity, with a length between 15 and 20 μm and an aspect ratio of about 12.

中文翻译：

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用悬浮的CaSO4矿化模拟烟气以制备CaCO3晶须

通过将包含CO ₂和N _2的模拟烟道气引入CaSO ₄悬浮液中，可控制地合成CaCO ₃晶须。研究了溶液pH，反应温度和模拟烟气对CaCO ₃晶须形成的影响。还临时推荐了CaCO ₃晶须的生长机理和生长模型。通过扫描电子显微镜分析，热重分析和X射线衍射分析对反应产物进行表征。在pH 7.5、80°C，0.1 L / min CO ₂流速和16.7％CO _2的条件下合成了纯度为97％的CaCO ₃晶须 纯度，长度在15到20μm之间，长宽比约为12。