CAJ | 학술논문

研究以K_2CO_3,Li_2CO_3和TiO_2为反应原料合成层状钛酸盐K_(0.81)Li_(0.27)Ti_(1.73)O_4过程中合成条件对产物的影响. 结果表明: 反应温度在1 000～1 200 ℃, 反应原料配比为n(K_2CO_3):n(Li_2CO_3):n(TiO_2)=(0.405～0.42):(0.135～0.165):1.73时, 均可以得到产物K_(0.81)Li_(0.27)Ti_(1.73)O_4, 延长反应时间及升高反应温度均有利于产物的生成;在1 200 ℃高温条件下, 使用刚玉坩埚为反应容器时, 最佳的反应条件是: 反应温度为1 100 ℃, 反应原料配比为n(K_2CO_3):n(Li_2CO_3):n(TiO_2)=0.405:0.135:1.73, 反应24 h.
연구이K_2CO_3,Li_2CO_3화TiO_2위반응원료합성층상태산염K_(0.81)Li_(0.27)Ti_(1.73)O_4과정중합성조건대산물적영향. 결과표명: 반응온도재1 000～1 200 ℃, 반응원료배비위n(K_2CO_3):n(Li_2CO_3):n(TiO_2)=(0.405～0.42):(0.135～0.165):1.73시, 균가이득도산물K_(0.81)Li_(0.27)Ti_(1.73)O_4, 연장반응시간급승고반응온도균유리우산물적생성;재1 200 ℃고온조건하, 사용강옥감과위반응용기시, 최가적반응조건시: 반응온도위1 100 ℃, 반응원료배비위n(K_2CO_3):n(Li_2CO_3):n(TiO_2)=0.405:0.135:1.73, 반응24 h.
The synthesis of layered K_(0.81)Li_(0.27)Ti_(1.73)O_4 from K_2CO_3,Li_2CO_3 and TiO_2 was studied. The results show that the layered K_(0.81)Li_(0.27)Ti_(1.73)O_4 could be synthesized from starting materials at a mixing ratio of n(K_2CO_3):n(Li_2CO_3):n(TiO_2)=(0.405～0.42):(0.135～0.165):1.73 at a reation temperature between 1 000 ℃ and 1 200 ℃, and longer reaction time and higher reaction temperature favour the formation of the product. At 1 200 ℃, Al_2O_3 which is the component of corundum crucible would react with the reagents to form K_(1.5)Al_(1.5)Ti_(6.5)O_(16)impurity. So when the corundum crucible is used as the reaction container, the optimization reaction conditions are the reaction temperature is 1 100 ℃, the ratio of starting materials is n(K_2CO_3):n(Li_2CO_3):n(TiO_2)=0.405:0.135:1.73, and the reaction time is 24 h.