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남종우,김학준 한국화학공학회 1984 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.22 No.3
0.1N NaClO₄ 전해질중에서 백금과 이산화납 전극에 대한 요오드 이온의 전극반응을 삼각파 전위 주사법으로서 검토하였다. 그 결과는 다음과 같다. 백금전극에서는 0.65, 1.15와 1.4V vs. S.C.E에서 세개의 산화파가 형성되었으며, 이는 I₂, IO^-와 IO^-₃의 생성 전극반응에 기인하는 것이다. 이산화납 전극에서는 1.1과 2.25V vs. S.C.E.에서 I₂와 IO₃^-가 생성되는 전극반응이 일어났다. 백금과 이산화납 전극에서 모두 I^-이 흡착되며 I^-/I₂반응계는 가역적이었다. The oxidation of iodide at platinum and lead dioxide electrodes in O.1N NaClO₄, electrolytes were investigated using the cyclic voltammetric technique. Results are summarized as following: (I) At platinum electrode three anodic waves of I₂, IO^- and IO₃^- was formed at 0.65, 1.15 and 1.4V vs. S.C.E., respectively. (2) At lead dioxide electrode the formations of I₂ and IO₃^- occured at 1.1 and 2.25V vs. S.C E., respectively. (3) On both electrodes of platinum and lead dioxide iodide ions ere adsorbed and the reaction I^-/I₂ is proceeded reversibly.
남종우,김학준,Chong Woo Nam,Hak Joon Kim 대한화학회 1971 대한화학회지 Vol.15 No.6
In order to evaluate the mechanism of electrolytic oxidation of iodate and to determine the optimum conditions for the electrolysis, studies were made using the cells without diaphragm and the lead peroxide anode. Results are summarized as followings: 1) Current density vs. anode potential curve by lead peroxide electrode had the different limiting current densities from platinum electrode and was more positive than platinum electrode. 2) Additions of potassium bichromate in the electrolyte contribute to maintain high current efficiency. 3) In the acid and alkaline regions, the current efficiencies decreased by reduction of iodate and discharge of hydroxyl ion, so maximum current efficiency was shown at pH 7. 4) Higher current density lowered the current efficiency in the region of 60-80% conversion of iodate. 5) Influence of the conversion on current efficiency in the region of 60-80% conversion of iodate.
二酸化鉛 陽極에 의한 鹽素酸나트륨 電解製造에 있어서 電解條件 및 電流效率에 관한 硏究
남종우,Nam Chong Woo 대한화학회 1969 대한화학회지 Vol.13 No.2
On the electrolytic preparation of sodium chlorate, lead dioxide anode, instead of graphite was tested to find out the characteristics for current efficiency and life in various conditions. The results obtained are summerized as follows; 1. The current efficiency is slightly increased with the anode current density, until 25A/$dm^2$ 2. The higher the current concentrations. the lower current efficiencies are observed, particularly in case of both not-adding the potassium dichromate and large current concentration of more than 50A/l 3. The current efficiency may be improved linearly as the both temperature is raised.
남종우,김학준,Nam Chong Woo,Kim Hark Joon 대한화학회 1974 대한화학회지 Vol.18 No.5
저자들에 의해서 이미 보고되어 있는 요오드화염으로부터 요오드산염$(I^-{\to}{IO_3}^-)$ 및 요오드산염으로 부터 과요오드산염$({IO_3}^-{\to}{IO_4}^-)$까지의 전해결과를 참작하여 무격막 전해조와 이산화납양극을 사용하여 요오드화염으로부터 과요오드산염$(I^-{\to}{IO_4}^-)$을 직접 전해제조하기 위한 최적 전해조건에 관하여 검토하였다. 0.5g/l의 환원방지제인 중크롬산칼륨을 함유함 1몰의 요오드화칼륨 수용액을 15A/$dm^2$의 양극전류밀도와 $60^{\circ}C$</TECX>의 전해온도에서 전해한 결과, 요오드화칼륨으로 부터 과요오드산칼륨까지의 변화율 98%에서 전류효율이 84%이었다. 또한 각종 전해액중에서 이산화납 양극에 의한 분극곡선으로 부터 전극반응의 내용도 설명하였다. Direct electrochemical preparation of periodate from iodide $(I^-{\to}{IO_4}^-)$ was investigated using a none-diaphragm cell and lead dioxide anode. The direct electrolytic conditions were combinations of the respectively results on the processes of iodate from iodide$(I^-{\to}{IO_3}^-)$, and periodate from iodate$({IO_3}^-{\to}{IO_4}^-)$ which were reported by the author, previously. The optimum condition was achieved when 1.0 M potassium iodide solution containing 0.5 g/l potassium dichromate as an anti-reducing agent was electrolyzed at anodic current density of $15{\AA}/dm^2$ and electrolytic temperature of $60^{\circ}C$</TECX>. Under such a condition, the current efficiency was found to be 84 % at 98 % conversion of iodide to periodate. The explanation of electrode reaction was also given a consideration based on the polarization curves at lead dioxide anode in various electrolyte solutions.
전착과산화납양극에 의한 황산염. 전해산화시의 전해온도의 영향
남종우,김학준,Chong Woo Nam,Hak Joon Kim 대한화학회 1971 대한화학회지 Vol.15 No.5
In the electrolytic preparation of persulphate from sulphate solution, the current efficiency decrease with temperature increase at the platinum anode. But in case of electrodeposited lead peroxide anode, the current efficiency increase with temperature of the solution. The reason seems to be that the ozone formation is faster in platinum anode than in lead peroxide as temperature increase.
남종우 한국작물보호협회 1989 자연과 농업 Vol.10 No.2
농약의 품질향상, 유통의 원활 및 적정하고 안전한 사용등을 실천하는 것이 생산자와 소비자를 포함한 우리 모두의 당면과제이다. 이 과제를 수행함에 있어 농약판매상의 역할은 너무나 크다. 농약을 판매할 때는 병해충에 맞는 농약의 선택은 물론 구입자에게 사용상의 주의사항을 자세히 설명해주어, 올해는 농약으로 인한 불필요한 오해가 없도록 다같이 노력해야할 것이다.