Combustion Chemistry: Meaning of OH, H2O2 in Combustion

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Discussion Overview

The discussion revolves around the significance of the chemical species OH and H2O2 in combustion processes. Participants explore the context of their appearance and the implications for combustion chemistry.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant asks about the meaning of the appearance of OH and H2O2 in combustion.
  • Another participant seeks clarification on where these species appear in combustion reactions.
  • A participant notes that many reactions occur during combustion and expresses a desire to understand the significance of each species.
  • One reply questions the need for a meaning associated with the formation of species if they are present in the combustion reaction, suggesting that OH- is typically a negatively charged radical and H2O2 is hydrogen peroxide.
  • A participant clarifies that they are not asking about the general meaning but rather about specific implications, using CH2O as an example of a species indicating a cool flame.
  • Another participant interprets the inquiry as wanting to know the causes behind the formation of OH- and/or H2O2 in a flame, referencing a specific paper for context.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the meaning of the species in question, and multiple interpretations and clarifications are present throughout the discussion.

Contextual Notes

There are unresolved assumptions regarding the definitions and contexts of the species discussed, as well as the specific conditions under which they appear in combustion.

Auteng
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What is the meaning of the appearance of the following species in a combustion:

-OH

-H2O2
 
Engineering news on Phys.org
Where do they appear ?
 
thousands of reactions occur in the combustion...
I want to know what is the meaning of the appearance of each species...:smile:
 
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-
 
No, not meaning like that
For example appearance of CH2O shows cool flame...
 
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 ?
 

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