Beale Andrew M, Sankar Gopinathan, Catlow C Richard A, Anderson Paul A, Green Terry L
Davy Faraday Research Laboratory, The Royal Institution of Great Britain, 21 Albemarle Street, London, UK W1S 4BS
Phys Chem Chem Phys. 2005 Apr 21;7(8):1856-60. doi: 10.1039/b415570j.
The local structure of manganese and cobalt ions in both the AlPO-5 and AlPO-18 materials was determined using electron paramagnetic resonance (EPR) and X-ray absorption spectroscopy (XAS). This study strongly suggested that both cobalt and manganese ions are present in the framework tetrahedral sites in the as-prepared materials. Upon calcination, in a dry atmosphere, both manganese and cobalt ions are partially oxidised to the 3+ state; the fraction of oxidised cobalt or manganese ions depends upon both the nature of the framework structure and on the ion type with manganese systems showing a higher proportion of oxidised cations.
使用电子顺磁共振（EPR）和X射线吸收光谱（XAS）测定了AlPO - 5和AlPO - 18材料中锰和钴离子的局部结构。该研究有力地表明，钴离子和锰离子在制备好的材料的骨架四面体位置中均有存在。在干燥气氛中煅烧时，锰离子和钴离子均部分氧化为3 + 价态；氧化钴或锰离子的比例既取决于骨架结构的性质，也取决于离子类型，其中锰体系中氧化阳离子的比例更高。
