Sodium aluminate → Molecular sieve

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Sodium aluminosilicate gel was prepared from 519 grams of N brand sodium silicate solution, 205 grams of sodium aluminate crystals, 40 grams of sodium hydroxide pellets and 500 milliliters of deionized water. The particular sodium silicate solution used analyzed 29.0% by weight SiO2 and 9.1% by weight Na2O, with the balance water. The gel was prepared by first dissolving the sodium hydroxide, then the sodium aluminate, in the deionized water. The sodium silicate solution was placed in a beaker outfitted with an overhead stirrer. While the sodium silicate solution was stirring, the caustic sodium aluminate solution was poured in. This caused the creation of a stiff white gel from the two generally clear solutions. The stiff gel was finally homogenized by mixing in a WARING BLENDER mixer for one minute on the lowest speed setting.

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