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Updated: Jun 28, 2026

Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica
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Published on: July 9, 2015

Solid phase extraction of gold by sorption on octadecyl silica membrane disks modified with pentathia-15-crown-5 and

Marzieh Bagheri1, Mohammad Hossein Mashhadizadeh, Saeid Razee

  • 1Chemistry Department, Shahid Bahonar University, 22-Bahman, Kerman 76169133, Iran.

Talanta
|October 31, 2008
PubMed

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Extraction: Advanced Methods00:56

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...