Abstract |
각종 음극, 즉 Ti, Zr, Ni, Pt, Cu, Ag, Au, Zn, Hg, Pb 및 흑연의 사용으로 2-butyne-1, 4-diol (BID)로부터 2-butene-1,4-diol (BED)까지의 전기화학적 환원거동에 관하여 연구하였다. IB족 금속을 음극으로 사용한 음극분극곡선은 알칼리용액중에서 BID에 대해 한개의 환원파가 생기나 BED의 경우는 지지전해질내에서와 마찬가지로 환원파가 생기지 않았다. 고로 BID환원반응에 가장 적당한 음극은 Cu, Ag, Au임을 알았다. 알칼리성 BID용액에서 은전극을 사용한 전위주사법에서 peak전류는 전위주사속도의 제곱근과 BID농도에 비례하였다. 한계전류의 대수와 절대온도의 역수의 관계로부터 구한 BID의 활성화에너지는 3.75kcal/mole였다. 고로 알칼리용액중 은전극을 사용한 BID의 환원전류는 자기확산에 의한 확산전류임을 알았다. Electrochemical reduction behavior from 2-butyne-1, 4-diol (BID) to 2-butene-1,4-diol (BED) by the use of various cathodes, such as Ti, Zr, Ni, Pt, Cu, Ag, Au, Zn, Hg, Pb and graphite has been studied. It has been found that cathodic polarization curve with metal of IB subgroup such as Cu, Ag and Au consisted of one wave in BID-alkaline solution, whereas it was not formed any wave in BED solution. Therefore, it was found that the cathode which was the most suitable in order to proceed in this reaction was Cu, Ag and Au. At cyclic voltammetry using a silver cathode in BID-alkaline solution, the current of the peak was proportional to square root of the sweep rate of potential and also proportional to concentration of BID. Activation energy was calculated for 3.75 kcal/mole from the plot of log Il vs. 1/T. Consequently, the reduction current of BID with a silver cathode in alkaline solution was found the diffusion current. |
