Abstract:

Ni-P-mCMC/mCS bipolar membrane(BPM) was prepared from carboxymethyl cellulose(CMC) modified with phosphorylated agent as a cation exchange layer and chitosan(CS) modified with glutaraldehyde(GA) as an anion exchange layer. The electrolysis cell was constituted by Ni-P-mCMC/mCS BPM as a septum for electrogenerating furfural alcohol(in the cathode room) and furoic acid(in the anode room). The experiment results show that H+ generated by the BPM moves into the cathode room from the interface layer of the Ni-P-mCMC/mCS BPM to promote the electroreduction of furfural for generating furfuryl alcohol; OH- moves into the anode room to combine with H+ produced by electro-oxygenation of furfural to generate furoic acid and improve the forward reaction speed. The electrolysis efficiency was up to 82.4% in the cathode room and 77.4% in the anode room at 30 ℃ when the current density was 2.5×10-2 A/cm2.

Key words: bipolar membrane, Furfural alcohol, electroless nickel plating, electro-synthetic, furoic acid