Synthesis of Nitric Oxide (Ostwald Process Step 1)

4NH3 + 5O2 → 4NO + 6H2O

概述

Ammonia is catalytically oxidized over a platinum-rhodium gauze at 850 C to form nitric oxide and water. This is the first and critical step of the Ostwald process for nitric acid production. The catalyst operates at about 95% selectivity for NO.

参与者

角色 物质 系数 状态
反应物 Ammonia NH₃ 4 (g)
反应物 Oxygen O 5 (g)
产物 Water H₂O 6 (g)

日常示例

The nitric acid used in fertilizer production and numerous industrial processes begins with this reaction.

工业重要性

奥斯特瓦尔德法生产全球几乎所有工业硝酸，硝酸是化肥（硝酸铵）、炸药（硝化甘油、TNT）和精细化学品的重要原料。

属性

类型
Synthesis
可逆
否
能量
放热
ΔH
-905.2 kJ/mol
催化剂
Platinum-rhodium gauze

相关反应

Formation of Calcium Hydroxide Formation of Carbon Monoxide Formation of Nitrogen Dioxide Formation of Potassium Chloride Formation of Sodium Bicarbonate Formation of Sodium Peroxide Formation of Silicon Dioxide Formation of Tungsten Carbide Formation of Copper(II) Sulfide Fischer-Tropsch Synthesis (General)

Frequently Asked Questions

What is the equation for Synthesis of Nitric Oxide (Ostwald Process Step 1)?
The balanced equation is: 4NH₃ + 5O₂ → 4NO + 6H₂O.
What type of reaction is Synthesis of Nitric Oxide (Ostwald Process Step 1)?
Synthesis of Nitric Oxide (Ostwald Process Step 1) is a synthesis reaction.
Is Synthesis of Nitric Oxide (Ostwald Process Step 1) exothermic or endothermic?
Synthesis of Nitric Oxide (Ostwald Process Step 1) is exothermic (releases energy). The enthalpy change (ΔH) is -905.2 kJ/mol.
What conditions are needed for Synthesis of Nitric Oxide (Ostwald Process Step 1)?
This reaction requires a catalyst (Platinum-rhodium gauze).