Co-existence of aluminosilicate and calcium silicate gel characterized through selective dissolution and FTIR spectral subtraction
Co-existence of aluminosilicate and calcium silicate gel characterized through selective dissolution and FTIR spectral subtraction
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DOI：
10.1016/j.cemconres.2015.01.006
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发表时间：
2015-04-01
影响因子：
11.4
通讯作者：
Mondal, Paramita
中科院分区：
文献类型：
--
作者：
Puligilla, Sravanthi;Mondal, Paramita
粉煤灰和矿渣混合物的碱活化据推测形成铝硅酸盐和硅酸钙水合物凝胶的组合作为反应产物。傅里叶变换红外光谱（FTIR）通常用于表征反应产物的复杂性质。然而，FUR结果的解释是困难的，因为来自初始灰、地质聚合物产物、未反应的炉渣和硅酸钙水合物的Si-O-T（T = Al，Si）振动产生重叠的光谱。本文报道了如何通过选择性地溶解水化硅酸钙和地质聚合物产品，并从原始材料中减去不溶性残留物的FTIR光谱来确定溶解的材料的IR光谱，来解决这个问题。(C)2015爱思唯尔有限公司版权所有。
Alkali activation of a fly ash and slag mixture supposedly forms a combination of aluminosilicate and calcium silicate hydrate gel as reaction products. Fourier transform infrared spectroscopy (FTIR) is often used to characterize the complex nature of the reaction products. However, interpretation of FUR results is difficult as the Si-O-T (T = Al, Si) vibrations from the initial ash, geopolymer product, unreacted slag, and calcium silicate hydrate yield an overlapping spectrum. This paper reports how the issue can be resolved by selectively dissolving calcium silicate hydrate and geopolymer product, and subtracting FTIR spectra of the insoluble residue from the original material to determine IR spectrum of the material dissolved. (C) 2015 Elsevier Ltd. All rights reserved.