A Membrane-Free and Energy-Efficient Three-Step Chlor-Alkali Electrolysis with Higher-Purity NaOH Production.,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A Membrane-Free and Energy-Efficient Three-Step Chlor-Alkali Electrolysis with Higher-Purity NaOH Production.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-11-19 , DOI: 10.1021/acsami.9b16754
Along Zhao ₁ , Faping Zhong ₂ , Xiangming Feng ₃ , Weihua Chen ₃ , Xinping Ai ₁ , Hanxi Yang ₁ , Yuliang Cao ₁

Affiliation

Conventional chlor-alkali processes are energy-consuming and environmentally unfriendly. To deal with this problem, we developed a three-step electrolysis (TSE) for a cleaner, energy-saving, and lower-cost chlor-alkali process. This new chlor-alkali process consists of three independent steps: a NaOH-production step in a Na0.44MnO2/oxygen-depolarizing cathode cell (step I), a Na+ and CI- extraction step in a Ag/Na0.44-xMnO2 cell (step II), and a CI2-production step in a graphite/AgCl cell (step III). This technology avoids the use of expensive ion-exchange membrane and toxic electrode materials, providing a great prospect to create a cleaner, energy-saving, and lower-cost chlor-alkali electrolysis process. This electrochemical ion coupling/decoupling technology can also be extended to other salt solutions (Na2SO4/NaNO3) to produce corresponding alkali (NaOH) and acid (H2SO4/HNO3), which has potential significance in the chlor-alkali industry.

中文翻译：

一种无膜，高效节能的三步氯碱电解法，具有较高纯度的NaOH生产。

常规的氯碱法过程耗能且对环境不利。为了解决这个问题，我们开发了一种三步电解（TSE），可实现更清洁，节能且成本更低的氯碱工艺。这种新的氯碱工艺包括三个独立的步骤：在Na0.44MnO2 /去氧阴极电极中的NaOH生产步骤（步骤I），在Ag / Na0.44-xMnO2电池中的Na +和CI-萃取步骤。（步骤II），以及在石墨/ AgCl电池中的CI2产生步骤（步骤III）。该技术避免了使用昂贵的离子交换膜和有毒电极材料，为创建更清洁，节能和低成本的氯碱电解工艺提供了广阔的前景。

更新日期：2019-11-20

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南