Improved Membranes for Electrosynthesis

可商购的离子选择性膜被改性以 更好地满足电有机合成工艺的需要。 所研究的方法是将甲醛转化为 乙二醇。 所有物种的运输存在于 该过程的几个版本针对几个状态被跟踪， 最先进的膜，并与电流密度相关， 温度和电解质流量。 的工作模型 膜运输得以发展。 膜被改性以 最小化溶剂和中性分子扩散。 今天使用的大多数电化学膜被设计成 用于氯碱工业或电渗析;一种 然而，有机电过程的位置非常不同， 对膜的要求。 离子交换膜 专为有机电合成设计， 为许多电化学反应提供了更高的效率 包括乙二醇的生产。

Commercially available ion-selective membranes are modified to better meet the needs of electro-organic synthetic processes. The process under study is the conversion of formaldehyde to ethylene glycol. The transport of all species present in several versions of this process is tracked for several state- of-the-art membranes, and correlated with current density, temperature, and electrolyte flow. A working model of membrane transport is developed. Membranes are modified to minimize solvent and neutral molecule diffusion. Most electrochemical membranes used today were designed either for the chloralkali industry or for electrodialysis; an electro-organic process, however, places very different requirements on the membranes. Ion-exchange membranes designed specifically for organic electrosynthesis will provide increased efficiency for a number of electrochemical processes, including production of ethylene glycol.