Hydrothermal Synthesis And Research Of Gallium Phosphates Micropore Materials

The paper main studies the gallium phosphate micropore compounds with open-framework under hydrothermal condition to explore synthetic method and reactive condition of microporous materials. The purpose of the research is to exploring the novel structure and composition of the micropore compounds.A three-dimensional microporous fluorogallophosphate Ga₃PO₃O₁₂F·0.5[1,8-C₈H₁₂N₂](named HIT-6) has been synthesized under hydrothermal conditions using 1,8-diaminooctane as the template in the GaOOH-H₃PO₄-amine-H₂O system. It was characterizated by ICP,CHN,IR,TG,powder XRD and single-crystal X-ray diffraction. It presents 4,8-membered channels along the [001] direction. And presents 4,10-membered channels along the [010] direction. The unique structure of two-layers construction layer-D which dislocation stacked was found in the structure of HIT-6. The synthesis and structural characterization of HIT-6, Further developed the composition of the gallium phosphate micropore componds.In the GaOOH-H₃PO₃-amine-H₂O system, Phosphorous acid take play of the phosphoric acid , a new three-dimensional gallium phosphite Ga₄(HPO₃)₇(OH₂)₃·[C₃H₈N₂] (named HIT-7) has been synthesized using the imidaxole as the template. It was characterizated by ICP,CHN,IR,TG,powder XRD and single-crystal X-ray diffraction.The compound contains the [HPO₃] pseudo-pyramid unit. It presents 4,6-membered channels along the [001] direction separately, and presents 8-membered channels along the [010] direction. The successful synthesis and structural characterization of HIT-7, has certain guiding significance to the gallophosphite micropore compounds field.