Synthesis of Gallium-sodalite from a Layered Silicate with a Half Cup-type Sodalite Cage Structure

Abstract Gallium-sodalite (Ga-SOD) was synthesized from a half cup-type sodalite cage layered silicate (named; HLS: [(CH3)4N]2Na2 [Si10O20(OH)4] 5.6H2O) by solid-state transformation. HLS was easily converted to the Ga-SOD by mixing it with Ga(OH)3 and heating at 150 °C for 3 h after adding a small amount of H2O as the solvent. Ga was inserted into the T-site of the SOD cage obtained.