2015
DOI: 10.1016/j.jafrearsci.2014.12.009
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Physical–chemical characterization of Tunisian clays for the synthesis of geopolymers materials

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Cited by 25 publications
(24 citation statements)
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“…2. Em análise das características químicas e físicas de argilas da Tunísia foram observadas reações endotérmicas e exotérmica dentro das mesmas faixas observadas neste trabalho, justificando que a baixa temperatura de desidroxilação pode ser um resultado da fraca cristalinidade de caulinita [13].…”
Section: Resultsunclassified
“…2. Em análise das características químicas e físicas de argilas da Tunísia foram observadas reações endotérmicas e exotérmica dentro das mesmas faixas observadas neste trabalho, justificando que a baixa temperatura de desidroxilação pode ser um resultado da fraca cristalinidade de caulinita [13].…”
Section: Resultsunclassified
“…The presence of this gel suggests that a portion of the alkaline solution remains unreacted because of the absence of a reactive species in the mixture of boehmite and calcite [13]. However, the mixture with Si/Ca + Na + Al = 0.36 resulted in a consolidated material with a thin layer of gel on the surface to form; in this mixture, the reactive species were relatively sufficient.…”
Section: Feasibility Of Consolidated Materialsmentioning
confidence: 96%
“…As showed in the Fig. 4a, the displacement of the Si-O-M band Table 3 Attribution of different FTIR bands with m: stretching vibration; d: bending vibration; as: asymmetric [13][14][15][16][17]. depends on the Si/Ca + Na molar ratio at t 0 and t 24h for the composition NaC SiNa Ch .…”
Section: Structural Evolution Of the Mixtures Based On Na 2 Comentioning
confidence: 99%
“…The XRD patterns of the M 1 showed [23]. Based on XRD data, siderite is the major mineralogical compound in the structure of natural material, along with quartz as minor compound ( Figure 3 [24][25][26]. FT-IR spectra is given in Figure 4.…”
Section: Catalysts Characterizationmentioning
confidence: 98%
“…Based on XRD data, siderite is the major mineralogical compound in the structure of natural material, along with quartz as minor compound (Figure 3). Peaks located at 24.7°, 32.2°, 38.4°, 42.4°, 46.2°, 50.8°, 52.3°, 60.9°, 64.6° and 65° indicated the presence of siderite, but those near 26.7 and 67 are indicative of quartz [24][25][26]. FT-IR spectra is given in Figure 4.…”
Section: Catalysts Characterizationmentioning
confidence: 99%