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首页> 外文会议>International Zeolite Conference pt.C; 20040425-30; Cape Town(ZA) >THE EFFECT OF DIFFERENT PRECURSORS ON THE SYNTHESIS OF ULTRAMARINE BLUE USING A MODIFIED TEST FURNACE
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THE EFFECT OF DIFFERENT PRECURSORS ON THE SYNTHESIS OF ULTRAMARINE BLUE USING A MODIFIED TEST FURNACE

机译：修饰的试验炉对不同前体对合成蓝色海藻的影响

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摘要

The industrial pigment, ultramarine blue, has been prepared using a modified laboratory-scale test furnace. A study to investigate the reproducibility between runs of the test furnace, in terms of the colour properties of the products and impurities present in the products, has been performed using predensified precursor mix taken from an ultramarine plant. A second set of experiments was performed in single runs in the furnace to show the effect of different types of sulfur source and feldspar on the quality and colour of ultramarine blue produced. Colour measurements indicate that the ultramarine with the best colour properties is produced when sodium sulfide is used as the sulfur source in the starting mixture. Analyses of products washed with different alkali solutions show that while washing with potassium hydroxide improves the colour properties of the pigment, it is less effective than sodium hydroxide at removing impurities in the product. The structures of the ultramarine blue products have been investigated using the Rietveld refinement of powder X-ray diffraction data. A strong correlation between structural parameters and colour parameters has not been found.
机译：工业颜料群青蓝已使用改良的实验室规模的测试炉制备。已经使用来自群青工厂的预浓缩前体混合物进行了一项研究，即根据产品的颜色特性和产品中存在的杂质来研究试验炉运行之间的可重复性。在炉子中以单次运行进行第二组实验，以显示不同类型的硫源和长石对所产生的深海蓝的质量和颜色的影响。颜色测量表明，将硫化钠用作起始混合物中的硫源时，会产生具有最佳颜色性能的群青。用不同的碱溶液洗涤的产品的分析表明，尽管用氢氧化钾洗涤可以改善颜料的色泽，但在去除产品中的杂质方面不如氢氧化钠有效。已使用粉末X射线衍射数据的Rietveld精修技术研究了群青蓝色产品的结构。尚未发现结构参数和颜色参数之间的强相关性。

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