Combustion Chemistry: Meaning of OH, H2O2 in Combustion

In summary, combustion chemistry refers to the study of chemical reactions involving the rapid oxidation of a fuel with oxygen, resulting in the release of heat and light energy. The OH radical, also known as the hydroxyl radical, plays a crucial role in combustion as it is highly reactive and can initiate the chain reactions that lead to the complete burning of the fuel. On the other hand, H2O2, or hydrogen peroxide, is a powerful oxidizing agent that can enhance the combustion process by providing additional oxygen atoms for fuel oxidation. Therefore, understanding the behavior and impact of OH and H2O2 in combustion is essential for improving the efficiency and reducing the emissions of combustion processes.
  • #1
Auteng
20
1
What is the meaning of the appearance of the following species in a combustion:

-OH

-H2O2
 
Engineering news on Phys.org
  • #2
Where do they appear ?
 
  • #3
thousands of reactions occur in the combustion...
I want to know what is the meaning of the appearance of each species...:smile:
 
  • #4
I don't understand your question. If it appears in the combustion reaction, it is being formed. Why should there be a meaning associated with that ?
If it appears in a textbook or in an article, you might help us assist you by quoting some more context.
OH- is usually a negatively charged radical. ##\ ## -OH can mean a lot of things, including OH-
H2O2 is hydrogen peroxide. -H2O2 could be a doubly negative radical H2O22-
 
  • #5
No, not meaning like that
For example appearance of CH2O shows cool flame...
 
  • #6
I see. You want to know what causes the formation of OH- and/or H2O22- ( or just H2O2 ?) in a flame !
A bit like http://www.icders.org/ICDERS2011/PapersICDERS2011/ICDERS2011-0328.pdf ?
 

1. What is the role of OH in combustion?

OH, also known as the hydroxyl radical, is an important intermediate in the combustion process. It is formed when hydrocarbons are oxidized, and it plays a crucial role in the chain reaction that leads to the complete combustion of fuel. OH reacts with fuel molecules to produce water and carbon dioxide, releasing energy in the form of heat.

2. What is the significance of H2O2 in combustion?

H2O2, or hydrogen peroxide, is an oxidizing agent that is present in small amounts in combustion reactions. It is formed when OH combines with another oxygen atom, and it helps to promote the combustion process by providing additional oxygen for fuel molecules to react with. However, too much H2O2 can lead to incomplete combustion and the formation of harmful byproducts.

3. How is OH formed in combustion?

OH is formed through a series of reactions involving oxygen and fuel molecules. It is primarily produced during the high-temperature oxidation of hydrocarbon fuels, such as gasoline or natural gas. The presence of OH is an indicator of an efficient and complete combustion process.

4. What is the chemical formula for OH?

The chemical formula for OH is HO, indicating that it is composed of one hydrogen atom and one oxygen atom. This radical is highly reactive and has a short lifespan, making it difficult to isolate and study in a laboratory setting.

5. How does the presence of OH affect the combustion process?

The presence of OH is essential for the efficient and complete combustion of fuels. It helps to break down larger fuel molecules into smaller, more reactive compounds, releasing energy in the form of heat. OH also helps to prevent the formation of harmful byproducts by reacting with other radicals and inhibiting their growth.

Similar threads

H2O2 35% on Al 5083 at 150° gives 'limescale'
    • Materials and Chemical Engineering
Replies
6
Views
423
Automotive Loss of gaseous volume because of fuel combustion
    • Mechanical Engineering
Replies
2
Views
174
Can Combustion Synthesis on LiNO3 Produce Lithium Oxide Li2O?
    • Chemistry
Replies
2
Views
1K
Automotive Ozone Enhanced Combustion of Water/Diesel Emulsion in CI Engines
    • Mechanical Engineering
Replies
6
Views
1K
Projectile Fired by Burning Propellant: Gas Cycle?
    • Materials and Chemical Engineering
Replies
2
Views
1K
I What role does Quantum Mechanics play in a internal combustion engine?
    • Quantum Physics
Replies
6
Views
781
If we have a non combustible power source
    • Aerospace Engineering
Replies
5
Views
1K
Blowout characteristic of Hydrocarbon Combustion
    • Materials and Chemical Engineering
Replies
1
Views
2K
I What happens when gas is combusted while moving?
    • Classical Physics
Replies
2
Views
601
Smokeless (sootless) combustion of vegetable oil
    • Materials and Chemical Engineering
Replies
29
Views
7K

Hot Threads

Recent Insights

Back
Top