초록

거대고리화합물의 유도체들은 촉매로 사용하여 유리질 탄소전극과 탄소 미소전극에서 SOCl$_2$의 전기화학적 환원반응을 조사하였다. 이들 유도체들은 먼저 전극표면에 흡착된 후 SOCl$_2$를 환원시켰다. 전해질 용액에 전극이 담기는 시간과 촉매들의 농도의 변화는 SOCl$_2$의 환원에 크게 영향을 미쳤다. 유리질 탄소 전극에서 촉매효과에 의한 속도상수는 10배 증가하였고, Power 밀도는 최고 220% 까지 증가하였다. 탄소 미소전극을 사용하여 시간전류법에 의해 얻은 확산계수는 유리질 탄소전극을 사용하여 순환전압전류법에 의해 얻은 결과와 다소 다른 값으로 나타났다.

Abstract

Electrochemical reduction of thionyl chloride has been carried out at glassy carbon and microelectrode that modified by macrocyclic compounds. The catalyst molecules of macrocyclic compounds were adsorbed on the electrode surface and reduced thionyl chloride resulting in a generation of oxidized catalyst molecules. The concentration of catalysts and electrode immersion time were found to affect the catalyst performance strongly. Significant improvements in cell performance have been noted in terms of both exchange rate constants of up to 10 times and power densities of up to 220% at glassy carbon electrode. The diffusion coefficients obtained at carbon microelectrode were slightly different from that determined at glassy carbon electrode.

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