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| Preparation of isostearic acid |
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| DOI： |
| KeyWord:oleic acid Ferrierite zeolite isomerization isostearic acid response surface methodology |
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| Abstract: |
| Isostearic acid was prepared by isomerization and hydrogenation of oleic acid with acidified Ferrierite zeolite as isomerization catalyst. With conversion rate of oleic acid and yield of isostearic acid as indexes，the effects of dosage of catalyst，reaction time，reaction temperature and dosage of water were investigated by single factor experiment，and each influence factor was optimized by response surface methodology with yield of isostearic acid as response value. The results showed that the optimal isomerization conditions were obtained as follows：dosage of catalyst(based on the mass of oleic acid) 5.33%，reaction time 6.83 h，reaction temperature 273.5℃ and dosage of water (based on the mass of oleic acid) 3.31%. Under the optimal conditions，the yield of isostearic acid reached 81.92%，and the content of isostearic acid in the product was 77.76%. |
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