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NTIS 바로가기Korean chemical engineering research = 화학공학, v.53 no.5, 2015년, pp.531 - 539
김지예 (서울대학교 공과대학 화학생물공학부, 화학공정신기술 연구소) , 김춘수 (서울대학교 공과대학 화학생물공학부, 화학공정신기술 연구소) , 김성환 (서울대학교 공과대학 화학생물공학부, 화학공정신기술 연구소) , 윤제용 (서울대학교 공과대학 화학생물공학부, 화학공정신기술 연구소)
Chlor-alkali industry is one of the largest electrochemical processes which annually producing 70 million tons of sodium hydroxide and chlorine from sodium chloride solution.
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핵심어 | 질문 | 논문에서 추출한 답변 |
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DSA 전극 표면에서 물분해반응을 통하여 산소를 많이 발생시키기 위하여 사용하는 원소는 무엇인가? | 한편, Co3O4, Fe3O4와 같이 전극의 산화가 쉽게 일어나고, 산소원자가 전극 표면에 강하게 결합되어 있는 경우 생성된 산소가 전극 표면으로부터 탈착되기 어려워 산소 발생이 적게 일어난다. 따라서, 전극물질과 산소원자 간 적절한 결합 에너지를 갖는 RuO2, IrO2의 경우 산소가 많이 발생할 수 있다. 산소 발생은 염소 발생과 선형적인 관계를 갖는 것으로 알려져 있기 때문에[1] Fig. | |
클로로알카리 산업이란 무엇인가? | 클로로알카리 산업은 염화나트륨 수용액의 전기분해로 연간 약 7천만 톤의 가성소다 및 염소를 생산하는 전 세계적으로 가장 큰 전기화학 공정 중 하나이다. 클로로알카리 공정에서는 DSA(Dimensionally Stable Anodes) 전극인 $RuO_2$ 및 $IrO_2$를 주로 사용하여 염소를 생산하며 상업적으로 사용되고 있는 전극에 비하여 염소 발생 효율이 높은 전극을 개발하려는 연구가 계속되고 있다. | |
클로로알카리 공정에서 염소이온 공급원으로 무엇을 이용하는가? | 1에서 확인할 수 있는 것과 같이 전 세계적으로 연간 6천만 톤 이상의 염소 및 가성소다를 생산하는 기술적·학문적 성공을 거둔 전기화학 공정 중 하나이다. 클로로알카리 공정은 염소이온 공급원으로 대부분 바닷물 또는 고농도 소금물을 이용해서 전기 분해가 이루어진다. Fig. |
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