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Effect Factors in Synthesis of Nicotinic Acid by Electrooxidation of 3-Picoline
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作者 SUN Xiu-yun ZHANG Yu-min +3 位作者 CAO Xue-jing ZHANG Heng-bin LI Fei XU Yu-ling 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2005年第6期692-696,共5页
In an electrolytic cell with a proton exchange membrane, nicotinic acid was synthesized at the PbO2 anode. The relationship between the current density and the potential at different concentrations of 3-picoline and s... In an electrolytic cell with a proton exchange membrane, nicotinic acid was synthesized at the PbO2 anode. The relationship between the current density and the potential at different concentrations of 3-picoline and sulfuric acid as well as at different temperatures was studied with polarization curves. The effects of the concentrations of sulfuric acid and 3-picoline, the anode potential and the reaction temperature on the selectivity and the current efficiency were explored. The optimum conditions were determined by orthogonal experiments. Under optimum conditions the selectivity and the current efficiency for the synthesis of nicotinic acid might reach 89% and 65%, respectively. The, concentrations of 3-picoline and nicotinic acid were analyzed with high performance liquid chromatography and the product was characterized with elemental analysis, chromatography-mass spectrometry and IR spectrometry. 展开更多
关键词 3-PICOLINE Nicotinic acid ELECTROOXIDATION electroorganic synthesis
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