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Citation: XU Cai-Xi, CHEN Ri-Yao, ZHENG Xi, WU Chun-Shan, CHEN Zhen. Preparation of PVA-CS/SA Bipolar Membrane and Its Application in Electro-generation of Hydroxypivalic Acid[J]. Chinese Journal of Applied Chemistry, ;2008, 25(3): 317-321. shu

Preparation of PVA-CS/SA Bipolar Membrane and Its Application in Electro-generation of Hydroxypivalic Acid

1.
College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007

Corresponding author: CHEN Zhen,
Received Date: 7 May 2007
Available Online: 10 September 2007
Fund Project: 福建省教育厅资助项目(JB06069,JB05314) (JB06069,JB05314)

PVA-SA/CS bipolar membrane was prepared by the paste method.PVA/sodium alginate(SA) and PVA/chitosan(CS) were cross-linked by Fe³⁺ and glutaraldehyde(GA),respectively.The swelling level of PVA/SA/CS bipolar membranes was in a range of 25%~80%.The morphology was investigated by SEM and the functional groups were studied by IR.PVA-SA/CS bipolar membrane exhibts a dense surface without pores.The anion layer(GA-PVA/CS) contains-N=C functional groups,while the cation layer(Fe-PVA/SA) contains-COO-functional groups.PVA-SA/CS bipolar membranes were used as the separator in the electrolysis cell for the electro-generation of hydroxypivalic acid.The cell voltage was quite stable.The average current efficiency was 52.2%,and the highest current efficiency reached to 68.9% at a current density of 28×10^-3 A/cm².
- bipolar membrane,
- hydroxypivalic acid,
- electro-oxidation,
- sodium alginate,
- chitosan,
- poly (vinyl alcohol)
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