Sunflower oil hydrogenation: Study using response surface methodology

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• 作者：E.A. Cepeda ; B. Calvo
• 关键词：Iodine index ; Nickel catalyst ; trans-oleic ; Stearic
• 刊名：Journal of Food Engineering
• 出版年：2008
• 出版时间：December 2008
• 年：2008
• 卷：89
• 期：4
• 页码：370-374
• 全文大小：476 K

文摘

The hydrogenation of sunflower oil to oleomargarine (70 iodine index) was studied from data obtained using a central composite experimental design. The nickel on silica catalyst was made by precipitation–deposition. The reaction was performed in a semi-batch reactor at temperatures between 120 °C and 180 °C, hydrogen pressures from 2.5 to 4.5 bar and catalysts loadings of 0.012–0.039 % (Ni/oil). Response surface methodology was used to predict the effect of reaction temperature, hydrogen pressure and catalyst loading on the overall rate constant of hydrogenation, total trans-isomers and stearic acid triglycerides production. Statistical assessment showed a good agreement between predicted and observed values.