Contact Process SO₂ Oxidation
2SO2 + O2 ⇌ 2SO3
Tổng quan
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.
Người tham gia
| Vai trò | Chất | Hệ số | Trạng thái |
|---|---|---|---|
| Chất phản ứng | Oxygen O | 1 | (g) |
| Chất phản ứng | Sulfur Dioxide SO₂ | 2 | (g) |
| Sản phẩm | Sulfur Trioxide SO₃ | 2 | (g) |
Ví dụ thực tế
Sulfuric acid produced by this process is the world's most produced chemical, used in everything from fertilizers to batteries to detergents.
Tầm quan trọng công nghiệp
The contact process produces over 260 million tonnes of sulfuric acid annually. V₂O₅ catalyst replaced the original, more expensive platinum catalyst.
Tính chất
- Loại
- Redox
- Thuận nghịch
- Có
- Năng lượng
- Tỏa nhiệt
- ΔH
- -198,0 kJ/mol
- Chất xúc tác
- Vanadium(V) oxide (V₂O₅)
Phản ứng liên quan
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Copper Reduction of Silver Ion
Aqua Regia Dissolving Gold
Cerium(IV) Reduction by Iron(II)
Copper Oxidation by Nitric Acid
Hypochlorite Oxidation of Hydrogen Peroxide
Hydrogen Peroxide as Oxidizing Agent (Acidic)
Hydrogen Peroxide Disproportionation
Displacement of Hydrogen from Acid by Magnesium
Frequently Asked Questions
What is the equation for Contact Process SO₂ Oxidation?
The balanced equation is: 2SO₂ + O₂ ⇌ 2SO₃.
What type of reaction is Contact Process SO₂ Oxidation?
Contact Process SO₂ Oxidation is a redox reaction. It is reversible under certain conditions.
Is Contact Process SO₂ Oxidation exothermic or endothermic?
Contact Process SO₂ Oxidation is exothermic (releases energy). The enthalpy change (ΔH) is -198.0 kJ/mol.
What conditions are needed for Contact Process SO₂ Oxidation?
This reaction requires a catalyst (Vanadium(V) oxide (V₂O₅)).