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| Modification of ferrierite and catalytic isomerization of oleic acid to prepare isostearic acid |
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| DOI： |
| KeyWord:ferrierite isostearic acid modification surface modification isomerization |
| FundProject:国家自然科学基金资助项目（21978112) |
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| Abstract: |
| Sodium ferrierite was used as catalyst after modification and surface modification to catalyze the isomerization reaction of oleic acid and then prepare isostearic acid through hydrogenation reaction. Through single factor experiment, the effects of different modification conditions, including modification method, modifier, calcination temperature and calcination time, on the catalyst activity were investigated. Then the modification effect of three different surface modifiers on zeolite were explored. The results showed that the optimal modification conditions were obtained as follows: using ammonium modification, ammonium chloride as modifier, calcination temperature 500 ℃, calcination time 3 h. Under the optimal conditions, the yield of isostearic acid was 74.81%. The surface of the hydrogen ferrierite prepared under the optimal modification conditions was modified with 10% (based on catalyst mass) triphenylphosphine and then catalyzed the isomerization of oleic acid to prepare isostearic acid, and the yield of isostearic acid was over 81%. |
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