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| Preparation of soybean dreg based solid acid and its catalytic epoxidation of soybean oil |
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| DOI： |
| KeyWord:soybean dreg solid acid epoxidized soybean oil sulfonation agent |
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| Author Name | Affiliation | | LIU Peng1, XIE Mengjiao1, LUO Deyi1, ZHOU Xi1, 2 | 1.College of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, Hunan, China
2.Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control,Shaoyang 422000, Hunan, China |
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| Abstract: |
| In order to promote the resource utilization of soybean dreg, soybean dreg based solid acids were prepared by simultaneous carbonization and sulfonation using soybean dreg as raw material, and used as catalyst for the epoxidation of soybean oil. The effects of sulfonation agent type, sulfonation agent dosage, sulfonation temperature and sulfonation time on the structure and catalytic performance of soybean dreg based solid acid were investigated. The results showed that soybean dreg based solid acid (BD-1-2) prepared with sulfuric acid as sulfonation agent under the conditions of mass ratio of sulfuric acid to soybean dreg 2∶ 1, sulfonation temperature 190℃ and sulfonation time 10 h,had better catalytic property for the epoxidation of soybean oil with epoxy value reaching 6.30%. The thermodynamic property of the BD-1-2 could be maintained stable up to 200℃. The scanning electron microscopy results showed that the structure of BD-1-2 contained microspheres with smooth surface and irregular lamellar structure with rough surface. In addition, BD-1-2 still kept good catalytic performance after 4 runs. Therefore, BD-1-2 prepared can be applied to the efficient synthesis of epoxidized soybean oil. |
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