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Spectra of sodium aluminate solutions

ISSN号：1003-6326
期刊名称：《中国有色金属学报：英文版》
时间：0
分类：O614.112[理学—无机化学;理学—化学]
作者机构：[1]Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China, [2]Graduate University of Chinese Academy of Sciences, Beijing 100039, China
相关基金：Project（50234040） supported by the Key Project of the National Natural Science Foundation of China; and Project（2005AA647010） supported by the National High-Tech Research and Development Program of China.Acknowledgments The authors are thankful to Professor KE Jia-jun for his useful suggestions on the presentation of these results Financial supports from the National Natural Science Foundation of China （50234040） and the National High-Tech Research and Development Program of China （863 Project）（2005AA647010） are gratefully acknowledged.

关键词：铝酸钠溶液, 紫外光谱, 红外吸收光谱, 喇曼光谱, 铝酸盐离子, sodium aluminate solution, UV spectrum, IR absorption, Raman spectrum, aluminate ion

中文摘要：

铝酸钠答案的紫外系列从 1.5～4.0 从 59～409 g/L 和苛性的比率范围在一氧化二钠集中范围被获得揭示他们的结构特征，一座新山峰在所有答案在大约 220 和 266 nm 除山峰以外出现在大约 370 nm ，这被发现。新山峰被高氢氧化物集中和高苛性的比率强烈赞成。并且答案什么时候被溶解氢氧化钠和三乙酸铝准备，仅仅出现。另外，有高碱集中和高苛性的比率的铝酸钠答案的红外和拉曼系列被测量，并且艾尔(H2O )(3+) 的水溶液的紫外系列 6 并且 AlF (3-) 6 也被测量。根据在配位化学以及上述系列特征的结晶场论，在大约 370 nm 的这座新山峰与 6 的一个协作数字作为铝酸盐离子的新种的证据被决定。

英文摘要：

The UV spectra of sodium aluminate solutions were obtained in the sodium oxide concentration range from 59 to 409 g/L and the caustic ratio range from 1.5 to 4.0 to reveal the structure characteristics of them. It is found that a new peak appears at about 370 nm besides peaks at about 220 and 266 nm in all solutions. The new peak is strongly favored by high hydroxide concentration and high caustic ratio. And it only appears when the solutions are prepared by dissolving sodium hydroxide and aluminum hydroxide. In addition, the IR and Raman spectra of sodium aluminate solutions with high alkali concentration and high caustic ratio were measured, and the UV spectra of aqueous solutions of Al（H2O）6^3＋ and AlF6^3- were measured as well. According to the crystal field theory in coordination chemistry as well as the above spectra characteristics, this new peak at about 370 nm is determined as the evidence of a new species of aluminate ion with a coordination number of 6.

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