Improved Membranes for Electrosynthesis

改进的电合成膜

• 批准号: 9161086
• 负责人: J David Genders
• 金额: $ 5万
• 依托单位: The Electrosynthesis Company, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-15 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9161086&HistoricalAwards=false
• 关键词: Improved; Membranes; Electrosynthesis

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.

为了更好地满足电有机合成工艺的需要，对市售离子选择膜进行了改性。所研究的过程是将甲醛转化为乙二醇。在这一过程的几个版本中，所有物种的运输都被跟踪到几种最先进的膜中，并与电流密度、温度和电解质流动相关。建立了膜输运的工作模型。膜被修改以减少溶剂和中性分子的扩散。目前使用的大多数电化学膜要么是为氯碱工业设计的，要么是为电渗析设计的；然而，电有机过程对膜提出了非常不同的要求。专门为有机电合成设计的离子交换膜将为许多电化学过程提供更高的效率，包括乙二醇的生产。