KAJIAN PERUBAHAN UKURAN RONGGA ZEOLIT RHO BERDASARKAN VARIASI RASIO Si/Al DAN VARIASI KATION ALKALI MENGGUNAKAN METODE MEKANIKA MOLEKULER

Wahdana Kusuma Sari (Jurusan Kimia FMIPA Universitas Mulawarman)
Rahmat Gunawan (Jurusan Kimia FMIPA Universitas Mulawarman)
Erwin Erwin (Jurusan Kimia FMIPA Universitas Mulawarman)

Jurnal Kimia Mulawarman
Vol 14 No 1 (2016)

The structure modeling of zeolite RHO with variation of Si/Al ratio (5; 4.33; 3.8; 3.36; 3; 2.69; 2.43; 2.2; 2) and variation of alkaline cations (Li+, Na+, K+, Rb+, Cs+, Fr+) calculated by the molecular mechanics method has been investigated. The result shows that the structure of zeolite RHO with Si/Al ratio 3.36 has the most stable structure with a minimum energy 2652.0308 kcal/mol. The most stable structures of zeolite RHO impregnated with cation is that impregnated with Fr+ (alkaline) with a minimum energy 3006.6587 kcal/mol. The result shows that the zeolite RHO structure with cations Fr+ (alkaline) has the largest pore diameter which potentially has the best adsorption capacity.