中文摘要：

调查钙 hexaluminate 的形成机制(CaAl ₁₂ O ₁₉, CA ₆), 纯氧化铝和 calcia 用作原料的经分解在 CaO/Al ₂ 由质量的 12.57:137.43 的 O ₃ 比率。原料是球工厂并且塑造了标本进绿色，并且向 1300-1600Ts 开火了经由 poly 使用的一个 noncovalent 表面修正方法(diallydimethylammonium 氯化物) 被修改形成 cationic 聚合电解质。anionic 聚合电解质被 HAuCl ₄ 的化学减小作为稳定并且减少代理人形成 anionic AuNPs 用钠柠檬酸盐准备。GSH 向多巴胺的电镀物品氧化被用作 electrocatalyst。构造合成电极与短回答向多巴胺展出优秀 electrocatalytic 活动吗？？

英文摘要：

To investigate the formation mechanism of calcium hexaluminate（CaAl_（12）O_（19）, CA_6）, the analytically pure alumina and calcia used as raw materials were mixed in CaO/Al_2O_3 ratio of 12.57：137.43 by mass. The raw materials were ball-milled and shaped into green specimens, and fired at 1300-1600°C. Then, the phase composition and microstructure evolution of the fired specimen were studied, and a first principle calculation was performed. The results show that in the reaction system of CaO and Al_2O_3, a small amount of CA_6 forms at 1300°C, and greater amounts are formed at 1400°C and higher temperatures. The reaction is as follows： CaO ·2Al_2O_3（CA_2） ＋ 4Al_2O_3 → CA_6. The diffusions of Ca~（2＋） in CA_2 towards Al_2O_3 and Al~（3＋） in Al_2O_3 towards CA_2 change the structures in different degrees of difficulty. Compared with the difficulty of structural change and the corresponding lattice energy change, it is deduced that the main formation mechanism is the diffusion of Ca~（2＋） in CA_2 towards Al_2O_3.