At room temperature(25 ℃), urea and ferric chloride hexahydrate(system Ⅰ) or f erric nitrate nonahydrate(system Ⅱ) in a mole ratio of 6∶1 were mixed and ground finely in an agate mortar for 6 hours, a direc t soli...At room temperature(25 ℃), urea and ferric chloride hexahydrate(system Ⅰ) or f erric nitrate nonahydrate(system Ⅱ) in a mole ratio of 6∶1 were mixed and ground finely in an agate mortar for 6 hours, a direc t solid state reaction occurred. IR and elemental analysis confirmed the products obtained are the com- plexes of urea with ir on(Ⅲ).展开更多
Nanocrystalline BaCO 3 was synthesized at ambient temperature by solid state reactions. Phase, particle size and morphology of the prepared nanocrystallite were characterized by XRD and TEM. The crystallite product ha...Nanocrystalline BaCO 3 was synthesized at ambient temperature by solid state reactions. Phase, particle size and morphology of the prepared nanocrystallite were characterized by XRD and TEM. The crystallite product has a size about 30 nm. The effects of a series of reaction conditions on the synthesis of BaCO 3 are studied.展开更多
文摘At room temperature(25 ℃), urea and ferric chloride hexahydrate(system Ⅰ) or f erric nitrate nonahydrate(system Ⅱ) in a mole ratio of 6∶1 were mixed and ground finely in an agate mortar for 6 hours, a direc t solid state reaction occurred. IR and elemental analysis confirmed the products obtained are the com- plexes of urea with ir on(Ⅲ).
文摘Nanocrystalline BaCO 3 was synthesized at ambient temperature by solid state reactions. Phase, particle size and morphology of the prepared nanocrystallite were characterized by XRD and TEM. The crystallite product has a size about 30 nm. The effects of a series of reaction conditions on the synthesis of BaCO 3 are studied.
