SINTESIS SENYAWA PENGKHELAT LOGAM TANAH JARANG DARI METIL SALISILAT
Rare earth metals has been used in many industries such as superconductor production, LCD, permanent magnet, high quality optic and catalyst. Rare earth elements has many similarities in physical and chemical properties to each other so it is difficult to separate. Separation method using chelati...
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| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/71608 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Rare earth metals has been used in many industries such as superconductor production, LCD,
permanent magnet, high quality optic and catalyst. Rare earth elements has many similarities
in physical and chemical properties to each other so it is difficult to separate. Separation
method using chelating agent has given a highly effectiveness to separate rare earth element.
A ligand containing 2-(2-aminoethoxy)benzoate moiety has been reported as chelating agent
for rare earth metal ion. The ligand was synthesized from methyl salycilate and etanolamine
by etherification reaction. In this research, similar ligand have been synthesized from methyl
salycilat and triethanolamine to furnish 2,2',2''-[nitrilotris(ethane-2,1-diyloxy)]-
trimethylbenzoate. The products were characterized using infrared spectrophotometry to
identify function group and metal-ligand complex formation was identified by UV-Vis
spectrophotometry. The UV-Vis spectrophotometry analysis showed a new absorption peak
at 294 nm with extinction coefficient for La3+ at pH 3.5 = 1.83 x 105 M-1cm-1. This peak was
guess as peak of complex of ligan with La3+ ion. |
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