Highly efficient crystallization of AlPO(4)-5 accelerated by a rotating hydrothermal synthesis route.
Highly efficient crystallization of AlPO(4)-5 accelerated by a rotating hydrothermal synthesis route.
复制标题
旋转水热合成路线加速AlPO4-5的高效结晶
作者：
与静态水热合成相比，旋转水热合成的AlPO4-5分子筛的晶化速度明显加快，晶粒度明显减小，这主要归因于晶核中心的增加，晶体的成核和生长过程加快，初始反应凝胶中以五配位Al为主，非晶态Al向长程有序晶体的组装主要是由五配位Al向四配位Al转变所致。旋转加速了AlPO4-5的快速晶化，同时伴随着五配位Al向四配位Al的转变。
Compared with static hydrothermal synthesis, the crystallization rate of an AlPO4-5 molecular sieve has been accelerated distinctly by a rotating hydrothermal synthesis route with obviously decreased crystal particle size, which is assumed to be ascribed to the increased nucleation centers, accelerated crystal nucleation and growth processes; five-coordinated Al is dominant in the initial reaction gel, and the assembly from amorphous Al species to long-range ordered crystals is mainly contributed by the conversion from five-coordinated Al to four-coordinated Al. Rapid crystallization of AlPO4-5 accelerated by rotation accompanied by the conversion from five-coordinated Al to four-coordinated Al.
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