Geopolymers are promising candidates for nuclear-waste immobilization, {and more|and much more} {specifically|particularly|especially} for the immobilization of radioactive cesium. Low-Si metakaolin-based geopolymers cured at temperatures of 40°C {in the|within the|inside the} presence of Cs ions {generate|produce|create} a mixture of amorphous and crystalline phases {including|such as|which includes|like} a Cs-bearing zeolite F phase. {Using|Utilizing|Making use of|Employing|Working with|Applying} a {combination|mixture} of 133Cs solid-state NMR and X-ray powder diffraction measurements we {were|had been|have been} {able to|in a position to} show that Cs preferentially binds to zeolite F even when zeolite F {is not|isn’t|just isn’t|is just not|will not be} the dominant phase {in the|within the|inside the} matrix. {Moreover|Furthermore|In addition|Additionally}, post-leaching NMR experiments indicate that zeolite F binds Cs {more|much more|a lot more|far more|additional|extra} {efficiently|effectively} than the remaining crystalline or amorphous phases. Tailoring geopolymer formulations {so that|to ensure that|in order that} {a large|a sizable|a big} fraction of zeolite F is generated {may|might|could|may possibly|may well|may perhaps} {therefore|consequently|as a result|for that reason|thus|hence} be a promising route for the production of immobilization matrices for cesium. Formula of 3-Chloro-2-naphthoic acid 1438382-15-0 In stock PMID:24576999
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