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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Preparation and characterization of amorphous aluminosilicate polymers from ash formed in combustion of peat and wood mixtures
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Preparation and characterization of amorphous aluminosilicate polymers from ash formed in combustion of peat and wood mixtures

机译：由泥炭和木材混合物燃烧形成的灰分制备无定形铝硅酸盐聚合物并进行表征

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摘要

Fly and bottom ash samples were collected from a full scale circulating fluidized bed (CFB) boiler combusting a mixture of peat andwood, and their suitability for the preparation of a special type of amorphous aluminosilicate polymers, so called geopolymers, was studied. Both ash types and the corresponding geopolymers were characterized by a field emission scanning electron microscope utilizing an energy dispersive spectrometer (FESEMEDS), and by powder X-ray diffraction (XRD). Metakaolin and geopolymers prepared from it were included in this study for comparison. Both fly and bottom ash turned out to be suitable materials for the preparation of geopolymers. The diffraction patterns of the materials prepared by using a 5 M solution of NaOH indicated the presence of significant amounts of amorphous material. When using the 10 M NaOH solution, however, several crystalline zeolite phases were identified among the amorphous geopolymeric material. The effect of calcium, magnesium, and iron on the polymer formation was also explored in this work.
机译：从燃烧泥炭和木材的全尺寸循环流化床（CFB）锅炉中收集粉煤灰和底灰样品，并研究了它们对制备特殊类型的无定形铝硅酸盐聚合物（所谓的地质聚合物）的适用性。灰分类型和相应的地质聚合物均通过使用能量色散光谱仪（FESEMEDS）的场发射扫描电子显微镜和粉末X射线衍射（XRD）进行表征。这项研究包括偏高岭土和由其制备的地聚合物，以作比较。事实证明，粉煤灰和底灰都是制备地质聚合物的合适材料。通过使用5 M NaOH溶液制备的材料的衍射图谱表明存在大量的无定形材料。但是，当使用10 M NaOH溶液时，在无定形地聚合物中发现了几种结晶沸石相。在这项工作中还探讨了钙，镁和铁对聚合物形成的影响。

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