A continuous method of styrene carbonate (SC) synthesis from styrene oxide (SO) and carbon dioxide (CO₂) is reported, using a semipermeable Teflon® AF-2400-based tube-in-tube gas-liquid reactor. The reaction was performed in the presence of and tetrabutylammonium bromide (TBAB) and zinc bromide (ZnBr₂), acting as a highly efficient and economical homogeneous binary catalyst system. The exceptionally high permeation of CO₂ through the membrane, combined with the high surface area to volume ratio in such continuous flow reactors resulted in complete SO conversion (100%) in a significantly reduced reaction time (t_R) of 45 min at 120 °C and 6 bar of CO₂ pressure. The effect of various operating conditions such as reaction temperature, CO₂ pressure, residence time and catalyst molar ratio (ZnBr₂/TBAB) was determined. Moreover, a detailed kinetic study of SC synthesis was carried out to determine the corresponding kinetic values (k and E_a) and activation parameters (ΔH^‡, ΔS^‡ and ΔG^‡). Based on the experimental data, the reaction was found to be first-order in SO, TBAB and CO₂ concentrations. The activation energy of SC synthesis in the presence of TBAB catalyst alone was calculated to be 55 kJ mol⁻¹ over a temperature range of (90–120 °C), which was reduced to 32 kJ mol⁻¹ as a result of using ZnBr₂ as a co-catalyst.

据报道，使用基于AF-2400的半渗透性的管中管式气液反应器，由氧化苯乙烯（SO）和二氧化碳（CO ₂）合成碳酸苯乙烯（SC）的连续方法。该反应在四丁基溴化铵（TBAB）和溴化锌（ZnBr ₂）的存在下进行，作为高效且经济的均相二元催化剂体系。在这种连续流反应器中，CO ₂极高的透过膜渗透性，再加上高的表面积/体积比，导致120％的反应时间（t _R）大大缩短了反应时间（t _R），从而实现了完全的SO转化（100％）。C和6 bar的CO ₂压力。确定了各种操作条件的影响，例如反应温度，CO ₂压力，停留时间和催化剂摩尔比（ZnBr ₂ / TBAB）。此外，对SC合成进行了详细的动力学研究，以确定相应的动力学值（k和E _a）和活化参数（ΔH ^‡，ΔS ^‡和ΔG ^‡）。根据实验数据，发现该反应在SO，TBAB和CO ₂浓度上是一级反应。在90-120°C的温度范围内，仅在TBAB催化剂存在下，SC合成的活化能经计算为55 kJ mol ^-1，降低到32 kJ mol使用ZnBr ₂作为助催化剂的结果是^-1。