物理化学学报 >> 2005, Vol. 21 >> Issue (02): 202-204.doi: 10.3866/PKU.WHXB20050218

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柠檬酸铝溶液中铝的形态研究

林梅钦;宋锦宏;唐亚林;董朝霞;李明远;吴肇亮   

  1. 石油大学提高采收率研究中心,北京　102249； 中国科学院化学研究所分子科学研究中心　100080
  • 收稿日期:2004-07-01 修回日期:2004-08-31 发布日期:2005-02-15
  • 通讯作者: 林梅钦 E-mail:linmq@bjpeu.edu.cn

Study on the Existing State of Aluminum in Aluminum Citrate Solution

LIN Mei-Qin;SONG Jin-Hong;TANG Ya-Lin;DONG Zhao-Xia;LI Ming-Yuan;WU Zhao-Liang   

  1. Enhanced Oil Recovery Research Center, University of Petroleum, Beijing　102249; Institute of Chemistry, Chinese Academy of Sciences, Beijing　100080
  • Received:2004-07-01 Revised:2004-08-31 Published:2005-02-15
  • Contact: LIN Mei-Qin E-mail:linmq@bjpeu.edu.cn

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摘要： 采用27Al NMR法、渗析法与原子吸收分光光度法,研究了柠檬酸铝(AlCit)溶液中铝的形态及pH值的影响.结果表明,在AlCit溶液中存在两种形态的Al,一种是分子态AlCit,另一种是胶态Al, pH值增加时,分子态AlCit的量减少而胶态Al的量增加.

关键词: 柠檬酸铝, 27Al核磁共振波谱, 自旋-晶格弛豫时间, 渗析

Abstract: The existing state of aluminum in aqueous aluminum citrate(AlCit) solution and the effect of pH value on it are investigated by 27Al NMR, atomic aborbance spetrum and dialysis. The experimental results show that there are two states of Al in AlCit solution, one is in molecular state, and the other is in colloidal state. When the pH value of solution is increased, the amount of the Al in molecular state is decreased, and the amount of the Al in colloidal state is increased gradually.

Key words: Aluminum citrate, 27Al nuclear magnetic resonance, Spin-lattice relaxation time, Dialysis