용융 NaCl 전기분해 (다운스법)
2NaCl → 2Na + Cl2
개요
The Downs process electrolyzes molten NaCl at about 600°C (lowered from 801°C by adding CaCl₂) to produce sodium metal at the cathode and chlorine gas at the anode. A cylindrical iron cathode surrounds a graphite anode, with an iron screen separating products. This is the primary industrial method for producing metallic sodium.
참여 물질
일상 속 예시
Sodium metal produced by this process is used to make sodium vapor street lights that give a characteristic yellow glow.
산업적 중요성
나트륨 금속 생산의 주요 산업 공정입니다. 생산된 나트륨은 타이타늄 제련, 유기합성, 열전달 매체로 활용되며, 부산물인 염소는 PVC 및 소독제 생산에 사용됩니다.
성질
- 유형
- 전기화학
- 가역 반응
- 아니오
- 에너지
- 흡열
- ΔH
- 822.0 kJ/mol
- 촉매
- CaCl₂ (melting point depressant)
자주 묻는 질문
What is the equation for 용융 NaCl 전기분해 (다운스법)?
The balanced equation is: 2NaCl → 2Na + Cl₂.
What type of reaction is 용융 NaCl 전기분해 (다운스법)?
용융 NaCl 전기분해 (다운스법) is a 전기화학 reaction.
Is 용융 NaCl 전기분해 (다운스법) exothermic or endothermic?
용융 NaCl 전기분해 (다운스법) is endothermic (absorbs energy). The enthalpy change (ΔH) is 822.0 kJ/mol.
What conditions are needed for 용융 NaCl 전기분해 (다운스법)?
This reaction requires a catalyst (CaCl₂ (melting point depressant)).