Modeling and optimization of catalytic dehydration of ethanol to ethylene using central composite design |
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Authors: | Haining Kong Ershi Qi Gang Li Shuguang He Xian Zhang |
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Institution: | 1. School of Management, Tianjin University, Tianjin 300072, China 2. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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Abstract: | The central composite design in the modeling and optimization of catalytic dehydration of ethanol to ethylene was performed
to improve the ethylene yield. A total of 20 experiments at random were conducted to investigate the effect of reaction temperature,
Si/Al ratios of H-ZSM-5 catalyst and liquid hourly space velocity (LHSV) on the ethylene yield. The results show that the
relationship between ethylene yield and the three significant independent variables can be approximated by a nonlinear polynomial
model, with R-squared of 99.9% and adjusted R-squared of 99.8%. The maximal response for ethylene yield is 93.4% under the optimal condition of 328 °C, Si/Al ratio 85,
and LHSV 3.8 h?1. |
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Keywords: | central composite design catalytic dehydration of ethanol ethylene yield modeling optimization |
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