홀-에루법 (알루미늄 제련)
2Al2O3 + 3C → 4Al + 3CO2
개요
Alumina (Al₂O₃) is dissolved in molten cryolite (Na₃AlF₆) at 960°C and electrolyzed using carbon anodes. Aluminum is deposited at the cathode and oxygen reacts with the carbon anode to form CO₂. Independently invented by Charles Hall and Paul Héroult in 1886, this process reduced aluminum from a precious metal to a commodity.
참여 물질
일상 속 예시
Every piece of aluminum foil, beverage can, and airplane wing was produced by the Hall-Héroult process.
산업적 중요성
전 세계 알루미늄 생산의 표준 공정으로, 연간 7천만 톤 이상의 알루미늄을 생산합니다. 항공우주, 자동차, 건축, 포장재 산업에 필수적인 금속 생산 기술입니다.
성질
- 유형
- 전기화학
- 가역 반응
- 아니오
- 에너지
- 흡열
- ΔH
- 2168.0 kJ/mol
- 촉매
- Cryolite (Na₃AlF₆) solvent
자주 묻는 질문
What is the equation for 홀-에루법 (알루미늄 제련)?
The balanced equation is: 2Al₂O₃ + 3C → 4Al + 3CO₂.
What type of reaction is 홀-에루법 (알루미늄 제련)?
홀-에루법 (알루미늄 제련) is a 전기화학 reaction.
Is 홀-에루법 (알루미늄 제련) exothermic or endothermic?
홀-에루법 (알루미늄 제련) is endothermic (absorbs energy). The enthalpy change (ΔH) is 2168.0 kJ/mol.
What conditions are needed for 홀-에루법 (알루미늄 제련)?
This reaction requires a catalyst (Cryolite (Na₃AlF₆) solvent).