以1,2-丙二胺(1,2-DAP)为结构导向剂,在180℃加热摩尔组成为n(Al2O3)∶n(P2O5)∶n(1,2-DAP)∶n(H2O)=1∶6∶5.5∶139的初始混合物,合成了具有Al PO-CJ31骨架结构的新型三维开放骨架磷酸铝化合物(1);加热摩尔组成为n(Al2O3)∶n(P2O5)∶n(1,2-DAP)∶n(H2O)=1∶6∶7.5∶139的初始混合物,合成了二维层状磷酸铝化合物APDAP12-150.利用X射线粉末衍射分析(XRD)、元素分析、热重/差热分析等表征手段确认了化合物1的分子式为[Al4P5O20·H3O·H2O]·[H3NCH2CHNH3CH3],质子化的水分子与双质子化的1,2-丙二胺共同起到了导向化合物1的作用.调变初始混合物中1,2-丙二胺的比例可显著影响其模板效应.1,2-丙二胺比例较低[n(1,2-DAP)=5.5]时,产物为三维开放骨架化合物,而当其比例较高[n(1,2-DAP)=7.5]时,产物为二维层状化合物.
By heating the initial mixture with the molar composition of n( Al2O3 ) : n( P205 ) : n( 1,2-DAP ) : n(H20) =1:6:x: 139( 1,2-DAP refers to 1,2-diaminopropane) at 180℃, a new three-dimensional open-framework aluminophosphate( compound 1) and a two-dimensional layered aluminophosphate APDAP12- 150 were obtained at x = 5.5 and x = 7.5, respectively. The framework topology of compound 1 is the same as that of A1PO-CJ31, a three-dimensional open-framework aluminophosphate directed by the template of diethylenetriamine. By combing the results of powder X-ray diffraction analysis ( XRD), elemental analysis ( C, H, N) and TG-DTA analysis, the composition of compound 1 was determined and the co-templating effect of protonated water was confirmed.