Citation: Dong Xiang LI, Wan Guo HOU, Shu Ping LI, Ming Tu HAO, Gao Yong ZHANG. The Isoelectric Point and the Points of Zero Charge of Fe-Al-Mg Hydrotalcite-like Compounds[J]. Chinese Chemical Letters, ;2004, 15(2): 224-227. shu

The Isoelectric Point and the Points of Zero Charge of Fe-Al-Mg Hydrotalcite-like Compounds

1.
Key Laboratry for Colloid and Interface Chemistry of Education Ministry, Shandong University, Jinan 250100;
2.
China Research Institute of Daily Chemical Industry, Taiyuan 030001

Received Date: 20 January 2003

Fund Project: The authors are grateful to the National Natural Science Foundation of China for financial support (Grant No. 20273041).

The relation of the isoelectric point (IEP) and the point of zero net charge (PZNC) of the hydrotalcite-like compounds was discussed. It was found that the IEP does not equal to the PZNC and the IEP is higher than the PZNC. The structural positive charges existing in the HTlc, which cause the difference between the IEP and the PZNC. The effects of the structural positive charges of the HTlc on its IEP and PZNC are the same as the specific adsorption of metal cations.
- Isoelectric point,
- points of zero charge,
- potentiometric titration,
- hydrotalcite-like compounds
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