ELOK FARIDAH, 080112349 (2006) SIMULASI MONTE CARLO (MC) UNTUK PENENTUAN STRUKTUR PELARUTAN ION Ni(II) DALAM AMONIA ENCER MENGGUNAKAN 2-BODY POTENTIAL. Skripsi thesis, UNIVERSITAS AIRLANGGA.
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Abstract
Dalam penelitian ini, Simulasi Monte Carlo digunakan untuk menentukan struktur ion Ni2+ dalam pelarut amoniak encer dengan variasi konsentrasi 31%, 34%, 40% dan 43%. Simulasi ini menggunakan 2-body potential. Potensial interaksi Ni2+ -H2O, Ni2+ -NH3, H2O-H20, NH3-NH3, H2O-NH3 diambil dari literatur. Sistem simulasi terdiri dari satu ion Ni2+ dan 210 campuran amonia-air dengan perbandingan sesuai variasi konsentrasi. Kondisi simulasi dibuat pada suhu 293,15 K dengan panjang kotak simulasi sebesar 19,2012663 A. Hasil penelitian menunjukkan bahwa pada konsentrasi 31%, di kulit pertama terdapat 2 molekul H2O dan 6 molekul NH3 dikulit kedua terdapat 11 molekul H20 dan 11 molekul NH3. Pada konsentrasi 34%, di kulit pertama terdapat 2 molekul H20 dan 6 molekul NH3 dikulit kedua terdapat 11 molekul H2O dan 9 molekul NH3. Pada konsentrasi 40%, di kulit pertama terdapat 1 molekul H2O dan 6 molekul NH3 dikulit kedua terdapat 10 molekul H2O dan 12 molekul NH3. Pada konsentrasi 31%, di kulit pertama terdapat 2 molekul H2O dan 6 molekul NH3 dikulit kedua terdapat 11 molekul H2O dan 9 molekul NH3. Dari data fungsi distribusi radial, angka pelarutan dan distribusi sudut ikatan dapat diperoleh struktur pelarutan ion Ni + pada konsentrasi 31% dan 34% berbentuk segiempat antipiramid dan struktur pelarutan ion Ni2+ pada konsentrasi 41% dan 43% mendekati bentuk capped octahedron. Translation: Monte Carlo Simulation used to explain the structure of Ni2+ ion in aqueous ammonia with variated 31%, 34%, 40% and 43% concentration. This simulation used 2-body potential. Potential interaction Ni2+ H2O, Ni2+-NH3, H2O-H2O, NH3-NH3, H2O-NH3 adopted from literature. Simulation system consist of one Ni2+ ion and 210 water-ammonia comparation based on variated concentration. Temperature system was set at 293,15 K with simulation box is 19,2012663 A Research result showed that 31% concentration at first shell there are two H2O molecule and six NH3 molecule. At second shell there are 11 H2O molecule and 11 NH3 molecule. 31% concentration at first shell there are two H2O molecule and six NH3 molecule at second shell there are 11 H2O molecule and 9 NH3 molecule. 40% concentration at first shell there are one H2O molecule and six NH3 molecule at second shell there are 10 H2O molecule and 12 NH3 molecule. 43% concentration at first shell there are one H2O molecule and six NH3 molecule at second shell there are 11 H2O molecule and 9 NH3 molecule. Angle distribution data, radial distribution function, and coordination number conclude that solvation structure at 31% and 34% concentration is square antipiramidal. Solvation structure at 40% and 43% concentration closed to capped octahedron form.
Item Type: | Thesis (Skripsi) | ||||||
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Additional Information: | KK KKC MPK 13/06 Far s | ||||||
Uncontrolled Keywords: | MONTE CARLO METHOD; ION EXCHANGE | ||||||
Subjects: | Q Science > QD Chemistry | ||||||
Divisions: | 08. Fakultas Sains dan Teknologi > Kimia | ||||||
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Depositing User: | Turwulandari | ||||||
Date Deposited: | 19 Sep 2006 12:00 | ||||||
Last Modified: | 05 Aug 2016 04:08 | ||||||
URI: | http://repository.unair.ac.id/id/eprint/25924 | ||||||
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