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Citation: HUANG Zhen-Xia, CHEN Ri-Yao, ZHENG Xi, CHEN Xiao, CHEN Zhen. Preparation of Ni-mSA-mCS Bipolar Membrane and Its Application in Electro-generation of TGA[J]. Acta Physico-Chimica Sinica, ;2007, 23(11): 1771-1775. doi: 10.3866/PKU.WHXB20071122 shu

Preparation of Ni-mSA-mCS Bipolar Membrane and Its Application in Electro-generation of TGA

1.
Experiment Center, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China

Received Date: 13 June 2007
Available Online: 13 September 2007

Sodiumalginate (SA) and chitosan (CS) were modified by Ca2+ and glutaraldehyde (GA) as linking reagents respectively to prepare Ni-mSA-mCS (m: modified) bipolar membrane (BM). The nickel net was settled down to the surface of the mSA cation membrane as a cathode. It improved the mechanical property of membranes and realized zero polar distance, minimized the IR drop in the cathode electrolyte. It was characterized by FTIR and SEM, and used as a separator in the electrolysis cell to produce thioglycolic acid (TGA). The experiment results showed that TGA was preparedeffectivelyby electro-reduction of dithiodidiglycolic acid (DTDGA). The current efficiencywas up to 66.7% at room temperature (25 ℃) under the current density of 10 mA·cm-2. Compared with the traditional metal reduction method, the electro-reduction technology saves the zinc powder and eliminates the pollution to environment.
- Electro-generation; Thioglycolic acid; Dithiodiglycolic acid; Ni-mSA-mCS bipolar membrane
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