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All Journal Jurnal Ilmu Dasar Alchemy Jurnal Penelitian Kimia
Arief Budyantoro
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Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Environmental Science Materials Science & Nanotechnology Mathematics

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KINETIKA REAKSI PEMBENTUKAN FUJASIT DARI ABU LAYANG Budyantoro, Arief; Sutarno, Sutarno; Arryanto, Yateman
Alchemy Jurnal Penelitian Kimia Vol 7, No 1 (2008)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Faujasit disintesis dari abu layang secara hidrotermal dalam larutan alkali pada temperature 100oC melalui perlakuan refluks dengan HCl 5M dan peleburan dengan NaOH (rasio berat NaOh/abu layang = 1,2). Kinetika pembentukan faujasit dikaji dengan memvariasi waktu hidrotermal 0-120 jam sedangkan faujasit hasil sintesis dari abu layang diuji kestabilan termalnya pada temperatur 400-900oC. Kestabilan termal faujasit dari abu layang dibandingkan dengan zeolit Y perdagangan. Hasil sintesis dikarakterisasi dengan metoda difraksi sinar-X. Hasil penelitian menunjukkan bahwa faujasit terbentuk melalui pelarutan komponen penyusun abu layang seperti kuarsa, mullit dan aluminosilikat amorf (waktu hidrotermal 0- 3 jam) membentuk faujasit (waktu hidrotermal 6-48 jam). Setelah waktu hidrotermal 48 jam, faujasit mengalami transformasi fasamenjadi zeolit P dan akhirnya membentuk hidroksisodalit secara sempurna setelah waktu 120 jam. Pola difraksi sinar-X menunjukkan bahwa kestabilan termal faujasit hasil sintesis dari abu layang relative lebih rendah daripada zeolit Y perdagangan. Faujasit hasil sintesis dari abu layang berubah menjadi fasa amorf pada temperatur 800oC sedangkan zeolit Y perdagangan berubah menjadi fasa amorf pada temperatur 900oC.
Effectiveness of Added L-Ascorbyl Palmitate Antioxidant Synthezed Enzymatically in Coconut Oil Sutarno Sutarno; Yateman Arriyanto; Arief Budyantoro
Jurnal ILMU DASAR Vol 10 No 1 (2009)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

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Abstract

Research on effect of NaOH/Coal Fly Ash ratio in faujasite synthesis to faujasite crystallinity has been conducted. Faujasite synthesis has been conducted by destructed coal fly ash using sodium hidroxide (NaOH) with NaOH/Coal Fly Ash ratio = 1.0;1.2; 1.5; 2.0; 2.5 and 3.0 (w/w) on the solid phase. The solid mixtures cured at 550 oC for 1 h and followed by coolling process. Addition of distilled water to the solid mixtures and agitation for 24 h were done until we have slurry. The slurry kept on bomb autoclave and hydrothermal reaction has done at 100 oC for 72 h. The solid products are dried on oven and characterized using XRD. Al and Si were analyzed using UV-Vis spectroscopy method. The Faujasite has been produced by this research using of NaOH/Coal Fly Ash ratio ranging from 1 to 1.5 ratios (w/w). The range of NaOH/Coal Fly Ash ratio from 2 to 3 ratio (w/w) gave hidroxysodalite as hydrothermal product. The best ratio was by 1,2 NaOH/Coal Fly Ash ratio (w/w), it showed the highest crystallinity of faujasite and Si/Al ratio of Faujasite was higher than others. This research concluded that the high concentration of OH- on the hydrothermal system can transform faujasite to hydroxysodalite.
Co-Authors Sutarno Sutarno Sutarno Sutarno Yateman Arriyanto Yateman Arryanto