摘要
用吡啶代替四乙二醇作为溶剂,在A l2O3-H3PO4-C6H11NH2-Py体系下合成出层状阴离子骨架磷酸铝[A l2P3O12H]2-.2[C6H11NH3+](UT-4)的纯晶相,采用一维27A l,31P MAS NMR,1H→31P CP(Cross Polariza-tion)以及二维27A l3-1P HETCOR(Heteronuc lear Correlation)高分辨固体核磁共振技术对其骨架结构进行了表征.采用两种方法对27A l信号进行了归属,并通过分析27A l3-1P HETCOR谱对31P信号进行了归属.
Pure UT-4 crystalline phase was synthesized by using pyridine as the solvent instead of TEG in the system of Al2O3-H3PO4-C6H11 NH2Py.^ 27Al MAS NMR,^ 31P MAS NMR, ^1H→^1P cross-polarization（CP） and ^27Al-^31 P heteronuclear correlation （HETCOR） experiments were employed to investigate the framework of UT-4, a two-dimensional layer aluminophosphate, which was first synthesized in the system of TEG, coexisting with UT-5. In the assignment of two four-coordinated Al atoms, two methods were used. The assignment of ^31p signals is based on the ^27Al-^31P HETCOR spectrum.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第6期991-994,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学杰出青年基金(批准号:20125101)资助
关键词
固体核磁共振
磷酸铝
微孔材料
Solid-state NMR
Aluminophosphate
Microporous material
