TY - JOUR T1 - SOYA YAĞI METİL ESTERLERİN ÜRETİMİ İÇİN BAZİK HETEROJEN KATALİZÖR TASARIMI AU - Değirmenbaşı, Nebahat AU - Boz, Nezahat PY - 2015 DA - April JF - Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji JO - GUJS Part C PB - Gazi Üniversitesi WT - DergiPark SN - 2147-9526 SP - 401 EP - 406 VL - 3 IS - 1 LA - tr AB - Bu çalışmada, hidroksiapatit (HAP) katalizör destek malzemesi olarak birlikte çöktürme yöntemine göre hazırlandı. %25 potasyum hidroksit (KOH) HAP destek malzemesine ıslak emdirme yöntemi ile yüklenerek yapının bazikliği 1,6 mmol/g olarak bulundu. Elde edilen katı bazik katalizör soya yağının metanol ile transesterleşme tepkimesinden biyodizel (yağ asidi metil esterleri) üretimi için farklı sıcaklık aralığında (25-65°C) ve farklı alkol/yağ oranında (6/1-15/1) kütlece %3 katalizör miktarında 5 saat süre ile test edildi. Elde edilen soya yağ asidi metil esterlerinin saflığı ve yapısı ATR-IR spektroskopisi doğrulandı. KOH yüklenen HAP bazik katı katalizörü soya yağının transesterleşme tepkimesinde %93,3 metil ester verimi vererek oldukça başarılı bulundu. KW - Hidroksiapatit KW - biyodizel KW - soya yağı KW - transesterleşme. N2 - In this study, hydroxyapatite (HAP) was prepared by using the co-precipitation method and used as a catalyst support material. 25 % KOH loaded HAP catalyst was prepared by wet-impregnation method and basicity of synthesized catalyst was found to be 1.6 mmol/g. Synthesized solid basic catalyst was tested for the soybean oil transesterification with methanol at different reaction temperatures (25-65°C) and different alcohol/oil molar ratios (6/1-15/1) when catalyst amount of 3 wt.% and reaction time of 5 h were kept constant. The chemical structure and purity of the fatty acid methyl esters obtained in this study was verified by the ATR-IR spectroscopy method. 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