SINTESIS C-2-(2-AMINO-2-OKSOETOKSI)FENIL- KALIKS[4]RESORSINARENA DARI SALISILALDEHIDA SEBAGAI ADSORBEN KATION LOGAM Pb(II)

• Main Authors: , DESI RIANA SAPUTRI, , Prof. Drs. Jumina, Ph.D.
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2014
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/130525/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=70948
• Institution: Universitas Gadjah Mada

Synthesis of C-2-(2-amino-2-oxoethoxy)phenyl-calix[4]resorcinarene had been carried out as adsorbent of Pb(II) metal cation. The synthesis of C-2-(2-amino-2-oxoethoxy)phenyl-calix[4]resorcinarene was conducted in two steps. The first step was synthesis of 2-(2-amino-2-oxoethoxy)benzaldehyde from salycilaldehyde and 2-chloroacetamide using K2CO3 catalyst. The intermediate product was obtained as brown condensed liquid in 31% yield. The product was then reacted with resorcinol in ethanol under acidic condition. The product was obtained as orange solid in 46.34% yield with melting point more than 200oC. The structure elucidation of the products was performed by FT-IR spectrophotometer,1H-NMR, GC-MS, and 13C-NMR. Adsorption experiments were carried out in batch system under variation of medium acidity, interaction time, and initial Pb(II) metal cation concentration. Adsorption kinetic was studied using Lagergren and Ho equations. Adsorption isotherm was analyzed by Langmuir and Freundlich equations. The result showed that the adsorption process was optimum at pH 4 and interaction time 30 minutes. The kinetic study showed that the adsorption of Pb(II) metal cation followed in pseudo second order of Ho with adsorption rate 5.96�10-2 g mg-1 minutes -1. The isotherm adsorption study showed that the adsorption of Pb(II) cation metal on C-2-(2-amino-2-oxoethoxy)phenyl-calix[4]resorcinarene followed Langmuir isotherm adsorption by the equilibrium constant, maximum adsorption capacity and adsorption energy of 2.15�105 L mol-1, 8.29�10-2 mmol g-1 (17.19 mg g-1), and 30.62 kJ mol-1.