Electro-generation of 3-methyl-2-formylaminopyridine using a bipolar membrane as separator

Abstract

A mSA-mCS bipolar membrane was prepared by sodium alginate/polyvinyl alcohol (SA/PVA) and chitosan/polyvinyl alcohol (CS/PVA) modified by Fe 3? and glutaraldehyde as linking reagents, respectively. The mSAmCS bipolar membrane was investigated by FT-IR, SEM, I-V curves, ion exchange capacity and changes of pH in the anode and cathode chambers. The SA-CS/PVA bipolar membrane was used as a separator in the electrolysis cell to electrogenerate 3-methyl-2-formylaminopyridine. The product yield was 49.8% and higher than that produced in a Nafion mono-membrane-equipped cell. Compared with the traditional chemistry method, the electro-generating process is moderate and eliminates pollution to the environment.

Bipolar nanofiltration membranes based on plasma modified microfilters

“…This technique called EDBM (electrodialysis with BPM) has found a large number of new applications in chemical industry, in food and drug industry as well as in waste water treatment or production of high quality water. Among EDBM processes described so far one can find: production of specific organic compounds, mainly acids, removal of boron from aqueous solution, regeneration of CO 2 or other chemicals, recovery of amino acids, water electrolysis for H 2 production, inactivation of the enzymes in juice manufacturing, and others.…”