中文摘要：

以哌嗪为模板剂,采用水热法制备了系列磷酸铝晶体材料,以此为基础研究了模板剂浓度变化对合成磷酸铝晶体结构的影响.数码显微镜、XRD、FT-IR和X-射线单晶衍射等测试结果表明,不同浓度哌嗪溶液合成的晶体的结构不同.针对此体系,在高浓度哌嗪溶液中,哌嗪分子之间存在较强的自我有序化作用,导向合成二维层状结构磷酸铝晶体;随哌嗪溶液浓度降低,分子间有序化作用减弱,合成的磷酸铝晶体的结构由二维向三维转变,即低模板剂投入量易于导向合成高维结构;当哌嗪溶液浓度低于0.301 mol/L时,此体系下哌嗪的模板作用消失,只能获得致密结构的磷酸铝.

英文摘要：

Series of aluminophosphates materials had been synthesized hydrothermally in the presence of piperazine as the structure directing agent.The effect of diffferent templates＇ concentration was studied.The digital microscope,X-ray diffraction,single crystal data and FT-TR spectra had been used to confirm the crystal structures of aluminophosphates in different piperazine solution.There was a strong role of ordering among the molecules in high concentrations of piperazine solution,and it oriented two-dimensional layered aluminophosphate crystal structure.With the piperazine solution concentration decreased,the molecular ordering weakened and the crystal structure of aluminophosphates changed from two-dimensional to three-dimensional.When the concentration of piperazine solution was lower than 0.301 mol/ L,the template effect disappeared and only got a compact structure of aluminophosphates.