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首页> 外文期刊>Journal of Materials Science >Preparation of geopolymer precursors by sol-gel method and their characterization
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Preparation of geopolymer precursors by sol-gel method and their characterization

机译：溶胶-凝胶法制备地质聚合物前驱体及其表征

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摘要

Pure Al2O3-2SiO(2) precursors (powders) for a geopolymer were prepared by a sol-gel method. The alkali-activated products derived from the precursors meet the general criteria for a geopolymer. The structure of the powders was investigated by NMR, XRD, and FTIR analysis, and their alkali-activation properties were studied. The data show that the powders when heat treated at 200 degrees C begin to contain 5-coordinated Al, those heat treated at 300 degrees C can begin to undergo alkali-activation, and those heat treated at 300-800 degrees C possess a number of structure characteristics similar to metakaolin, and the properties of their alkali-activated products are similar to those of the metakaolin geopolymers.
机译：通过溶胶-凝胶法制备用于地质聚合物的纯Al2O3-2SiO（2）前体（粉末）。衍生自前体的碱活化产品符合地质聚合物的一般标准。通过NMR，XRD和FTIR分析研究了粉末的结构，并研究了其碱活化性能。数据显示，在200摄氏度下热处理的粉末开始含有5个配位的Al，在300摄氏度下热处理的粉末可以开始进行碱活化，而在300-800摄氏度下热处理的粉末具有许多其结构特征类似于偏高岭土，其碱活化产物的性质与偏高岭土地质聚合物相似。

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