A new stearic acid method(SAM) has been used to prepare ultrafine K2La2Ti3O10 nanocrystalline. Each state of synthesis process was followed by the use of FT IR analysis. The resulting materials have been characterized...A new stearic acid method(SAM) has been used to prepare ultrafine K2La2Ti3O10 nanocrystalline. Each state of synthesis process was followed by the use of FT IR analysis. The resulting materials have been characterized by means of XRD, TEM, BET surface area analysis. The acid exchanging property of the obtained product was also studied. The experimental results showed that comparing with the product of traditional solid state reaction, the particle size of the K2La2Ti3O10 synthesized by SAM is greatly reduced, BET surface area is high(more than 11.83m2· g- 1) and has different acid exchanging properties. It can be easily exfoliated in 2mol· L- 1 HNO3 solution.展开更多
以三氧化二锑为原料,双氧水为氧化剂,经氧化回流法制备聚锑酸无机离子交换剂。该聚锑酸离子交换剂对锶-钇混合溶液中的锶具有较好的选择性吸附能力。通过正交实验设计法对反应影响因素进行了优化,结果表明,在60℃时加入40 mL水和12 mL H...以三氧化二锑为原料,双氧水为氧化剂,经氧化回流法制备聚锑酸无机离子交换剂。该聚锑酸离子交换剂对锶-钇混合溶液中的锶具有较好的选择性吸附能力。通过正交实验设计法对反应影响因素进行了优化,结果表明,在60℃时加入40 mL水和12 mL H2O2氧化10 g Sb2O3固体,反应120 min可制得对Sr2+和Y3+具有较高分离系数的聚锑酸离子交换剂。理化性能研究表明,产物是一种阳离子交换剂,对溶液中的Sr2+和Y3+的动态吸附分离具有较高的选择性。展开更多
文摘A new stearic acid method(SAM) has been used to prepare ultrafine K2La2Ti3O10 nanocrystalline. Each state of synthesis process was followed by the use of FT IR analysis. The resulting materials have been characterized by means of XRD, TEM, BET surface area analysis. The acid exchanging property of the obtained product was also studied. The experimental results showed that comparing with the product of traditional solid state reaction, the particle size of the K2La2Ti3O10 synthesized by SAM is greatly reduced, BET surface area is high(more than 11.83m2· g- 1) and has different acid exchanging properties. It can be easily exfoliated in 2mol· L- 1 HNO3 solution.
文摘以三氧化二锑为原料,双氧水为氧化剂,经氧化回流法制备聚锑酸无机离子交换剂。该聚锑酸离子交换剂对锶-钇混合溶液中的锶具有较好的选择性吸附能力。通过正交实验设计法对反应影响因素进行了优化,结果表明,在60℃时加入40 mL水和12 mL H2O2氧化10 g Sb2O3固体,反应120 min可制得对Sr2+和Y3+具有较高分离系数的聚锑酸离子交换剂。理化性能研究表明,产物是一种阳离子交换剂,对溶液中的Sr2+和Y3+的动态吸附分离具有较高的选择性。