We prove that AIPO_4-CJ has layer-structure,the molar ratio of P/Al of the framework is equal to 2,and the P atom ofthe framework has two terminal oxygens by X-ray powder diffraction and four-circleX-ray diffraction.

• 经多晶 X 射线衍射；四圆单晶 X 射线结构测定；其骨架 P 与 Al 原子比等于2；骨架 P 原子上有两个端基氧.