中文摘要：

硅铝沸石的合成大多数是在强碱性介质中进行的，所以强碱性硅铝酸盐体系中硅和铝聚合态的存在形式对于研究沸石的合成机理具有重要意义．关于固态沸石晶体及硅铝酸盐的^29Si和^27Al核磁共振研究已有大量文献报道，而且其结果已经被广泛地接受并得到应用．但是，对于硅铝酸盐溶液中的铝物种^27Al的归属却仍然存在争议．

英文摘要：

Aluminosilicate zeolites as one of the most important catalytic materials are widely applied in industrial reactions, and understanding of their synthetic mechanism is one of key factors in this field. ^27Al and ^29Si NMR techniques are one of powerful tools for characterization of zeolite synthesis, but unfortunately the study on ^27 Al NMR spectra of aluminosilicate solutions is still argumentative, and the assignment of aluminosilicate species in the solutions are challengeable. In this work, we have carefully compared ^27Al NMR spectra of various aluminosilicate solutions, harmonizing the assignments reported previously. Furthermore, we assigned ^29Si NMR spectra related to Al species. The peaks at 8： -75.1 and -82. 5 in ^29Si NMR spectrum are related to Q^2 Al species, the peaks at δ： - 84.5 and - 90. 8 are related to Q^3 and Q^4 Al species in aluminosilicate solutions, respectively.