A clean and membrane-free chlor-alkali process with decoupled Cl(2) and H(2)/NaOH production.
A clean and membrane-free chlor-alkali process with decoupled Cl(2) and H(2)/NaOH production.
复制标题
一种清洁、无膜的氯碱工艺,可分离 Cl-2 和 H-2/NaOH 生产
DOI:
10.1038/s41467-018-02877-x
复制
发表时间:
2018-01-30
影响因子:
16.6
通讯作者:
Xia Y
中科院分区:
文献类型:
--
作者:
Hou M;Chen L;Guo Z;Dong X;Wang Y;Xia Y
Existing chlor-alkali processes generally use asbestos, mercury or fluorine-containing ion-exchange membranes to separate the simultaneous chlorine production on the anode and hydrogen production on the cathode, and form sodium hydroxide in the electrolyte. Here, using the Na+ de-intercalation/intercalation of a Na0.44MnO2 electrode as a redox mediator, we decouple the chlor-alkali process into two independent steps: a H2 production step with the NaOH formation in the electrolyte and a Cl2 production step. The first step involves a cathodic H2 evolution reaction (H2O → H2) and an anodic Na+ de-intercalation reaction (Na0.44MnO2 → Na0.44−xMnO2), during which NaOH is produced in the electrolyte solution. The second step depends on a cathodic Na+ intercalation reaction (Na0.44−xMnO2 → Na0.44MnO2) and an anodic Cl2 production (Cl → Cl2). The cycle of the two steps provides a membrane-free process, which is potentially a promising direction for developing clean chlor-alkali technology. The chlor-alkali process is an important industrial process to make commodity chemicals; however, it usually requires the use of dangerous chemicals as membrane material. Here, the authors demonstrate clean, membrane-free chlor-alkali electrolysis, where chlorine evolution and hydrogen/sodium hydroxide production are completely decoupled.
登录
查看更多内容
影响因子:
16.6
作者:
Guo, Shaohua;Liu, Pan;Zhou, Haoshen
通讯作者:
Zhou, Haoshen
影响因子:
9.9
作者:
Ayala-Bribiesca, Erik;Pourcelly, Gerald;Bazinet, Laurent
通讯作者:
Bazinet, Laurent
影响因子:
1.1
作者:
Al-Hamaiedeh, Husam D.
通讯作者:
Al-Hamaiedeh, Husam D.
影响因子:
11.1
作者:
Jung, Johannes;Postels, Sarah;Bardow, Andre
通讯作者:
Bardow, Andre
影响因子:
1.8
作者:
Fauvarque, J
通讯作者:
Fauvarque, J