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Preparation of biodiesel from fatty acids catalyzed by solid acid SO2-4/water quenching slag
  
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KeyWord:solid acid  fatty acid  esterification  biodiesel  water quenching slag
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Author NameAffiliation
GAO Yanni  
CHEN Yubao  
WANG Qi，etc  
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Abstract:
      Using the active substance obtained from water quenching slag treated with sulfuric acid as the carrier, the super solid acid was prepared by impregnation method. Then the solid acid was used in the esterification of methanol and oleic acid, and the catalytic activity of the solid acid was analyzed by studying the influences of reaction conditions on conversion rate of oleic acid. The results showed that when the dosage of solid acid was 18% (based on the mass of oleic acid), the molar ratio of methanol to oleic acid was 15∶1, the reaction temperature was 120℃ and the reaction time was 8 h, the conversion rate of oleic acid reached 90.35%.The conversion rate of oleic acid was still over 70% after the solid acid catalyst had been reused for three times, but with reuse time increasing, the catalytic activity decreased.
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