접촉법 SO₂ 산화
2SO2 + O2 ⇌ 2SO3
개요
Sulfur dioxide is oxidized to sulfur trioxide over a vanadium pentoxide catalyst in the contact process for sulfuric acid manufacture. Sulfur changes from +4 to +6 oxidation state. The equilibrium is favored by low temperature but requires high temperature for adequate reaction rate, so 400-450 C with V₂O₅ catalyst provides optimal yield.
참여 물질
일상 속 예시
Sulfuric acid produced by this process is the world's most produced chemical, used in everything from fertilizers to batteries to detergents.
산업적 중요성
접촉 공정은 연간 2억 6천만 톤 이상의 황산을 생산합니다. V₂O₅ 촉매는 원래의 더 비싼 백금 촉매를 대체했습니다.
성질
- 유형
- 산화·환원
- 가역 반응
- 예
- 에너지
- 발열
- ΔH
- -198.0 kJ/mol
- 촉매
- Vanadium(V) oxide (V₂O₅)
자주 묻는 질문
What is the equation for 접촉법 SO₂ 산화?
The balanced equation is: 2SO₂ + O₂ ⇌ 2SO₃.
What type of reaction is 접촉법 SO₂ 산화?
접촉법 SO₂ 산화 is a 산화·환원 reaction. It is reversible under certain conditions.
Is 접촉법 SO₂ 산화 exothermic or endothermic?
접촉법 SO₂ 산화 is exothermic (releases energy). The enthalpy change (ΔH) is -198.0 kJ/mol.
What conditions are needed for 접촉법 SO₂ 산화?
This reaction requires a catalyst (Vanadium(V) oxide (V₂O₅)).