酸功能化离子液体催化合成仲丁醇的反应动力学(英文)

The acid-functionalized ionic liquid (HSO3Pmim]HSO4) was synthesized by a two-step method. Nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR) show that the synthesis method is feasible and high purity of ionic liquid can be obtained. Using HSO3Pmim]HSO4 as the catalyst, we studied the reaction kinetics of synthesizing sec-butyl alcohol from sec-butyl acetate and methanol by transesterification in a high-pressure batch reactor. The effects of temperature, initial molar ratio of methanol to ester, and catalyst concentration on the conversion of sec-butyl acetate were studied. Based on its possible reaction mechanism, a ho-mogeneous kinetic model was established. The results show that the reaction heatΔH is 10.94 × 103 J·mol?1, so the reaction is an endothermic reaction. The activation energies Ea+and Ea?are 60.38 × 103 and 49.44 × 103 J·mol?1, respectively.

Reaction kinetics for synthesis of sec-butyl alcohol catalyzed by acid-functionalized ionic liquid

The acid-functionalized ionic liquid (HSO₃Pmim]HSO₄) was synthesized by a two-step method. Nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR) showthat the synthesis method is feasible and high purity of ionic liquid can be obtained. Using HSO₃Pmim]HSO₄ as the catalyst, we studied the reaction kinetics of synthesizing sec-butyl alcohol from sec-butyl acetate and methanol by transesterification in a high-pressure batch reactor. The effects of temperature, initial molar ratio of methanol to ester, and catalyst concentration on the conversion of sec-butyl acetate were studied. Based on its possible reaction mechanism, a homogeneous kineticmodelwas established. The results showthat the reaction heat ΔHis 10.94 × 10³ J·mol^-1, so the reaction is an endothermic reaction. The activation energies E_a+ and E_a- are 60.38 × 10³ and 49.44 × 10³ J·mol^-1, respectively.