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Optimization of preparation of soybean oil-based polyols catalyzed by HPW-based mesoporous sieve using response surface methodology |
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KeyWord:epoxidized soybean oil soybean oil-based polyols response surface methodology phosphotungstic acid mesoporous sieve |
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Abstract: |
Preparation of soybean oil-based polyols catalyzed by phosphotungstic acid based (HPW-based) mesoporous sieve was optimized using response surface methodology. The results showed that using methanol as ring-opening reaction reagent,HPW-based mesoporous sieve could be successfully used as the catalyst for preparation of soybean oil-based polyols from epoxidized soybean oil. By the Box-Behnken design, the Design-expert 8.0 software was applied in square regression analysis. The optimal conditions for preparation of soybean oil-based polyols were obtained as follows: reaction time 3 h, dosage of HPW-based mesoporous sieve 3% (based on the mass of epoxidized soybean oil), molar ratio of methanol to epoxidized soybean oil 13∶?1 and reaction temperature 75?℃. Under the optimal conditions, the conversion rate of soybean oil-based polyols was 77.25%. |
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