Two narrow fractions of coal fly ash cenospheres with ∼90 wt % glass phase and different Si/Al ratio (2.1 and 2.9 in the glass phase), shell porosity and thickness, globule size, and content of a mullite phase were used as a glassy source of Si and Al in the hydrothermal synthesis of pollucite-analcime solid solutions at 150 °C and autogenous pressure, 1.0 M NaOH, Cs/Na ratios of 0–0.25. Hollow microsphere globules of about 60–70 and 140–170 μm in sizes are produced as Cs immobilized forms in this process. The microspheres have a composite mullite/ANA wall, where ANA is analcime-pollucite solid solutions. Composition and morphology of solid products as well as composition of ANA phases were characterized by PXRD, SEM-EDS and STA methods. The influence of the mullite content and shell thickness on the preservation of the product spherical shape has been established. The degree of Cs⁺ recovery from alkaline solutions due to preferential involvement of cesium in the synthesis of ANA phases was up to 96%.

使用两个窄馏分的粉煤灰空心层，它们具有约90 wt％的玻璃相和不同的Si / Al比（玻璃相中的2.1和2.9），壳的孔隙率和厚度，球状尺寸以及莫来石相的含量在150°C和自生压力，1.0 M NaOH，Cs / Na比为0-0.25的情况下水热合成铝矾土固溶体中Si和Al的来源。在此过程中，以固定化Cs的形式产生的中空微球尺寸约为60-70和140-170μm。微球具有复合莫来石/ ANA壁，其中ANA是钠铝榴石固溶体。用PXRD，SEM-EDS和STA方法对固体产物的组成和形态以及ANA相的组成进行了表征。已经建立了莫来石含量和壳厚度对产品球形保持性的影响。Cs度⁺从由于ANA相的合成铯的优先参与碱性溶液回收率达到96％。