Mutual Solubilities for Water-o-Nitrotoluene System and Distribution Coefficients for Furfural and Acetic Acid in Water-o-Nitrotoluene System

作者：Bo Dechen; Li Pingli^*; Chang Heying; Zhang Weijiang

来源：Journal of Chemical and Engineering Data, 2010, 55(11): 5191-5195.

DOI：10.1021/je100706u

Ten high boiling solvents were evaluated as the extraction solvent of furfural. o-Nitrotoluene with a high furfural distribution coefficient, high thermal stability, and having no azeotrope with furfural was chosen as a furfural extraction solvent for further study. The mutual solubilities for the water-o-nitrotoluene system were experimentally determined from (383.15 to 483.15) K at 25.0 bar using a static method. According to the results, it can be seen that the solubilities are temperature-dependent and can be correlated with a quadratic equation well. The distribution, coefficients for furfural and acetic acid in the water-o-nitrotoluene system were determined from (303.15 to 483.15) K at 25.0 bar using a static method, respectively. The results show that the distribution coefficients are temperature-dependent and can be correlated with van't Hoff equation well. Considering the high selectivity for furfural, the low selectivity for acetic acid and negligible mutual solubilities with water, o-nitrotoluene was considered as a suitable solvent for furfural production in the solvent extraction process.

• 出版日期2010-11
• 单位天津大学