n-butanol as a biofuel which is considered as a future energy source to substitute with gasoline. The heating value of n-butanol is higher than that of ethanol that for this reason, the first alcohol gives only carbon dioxide and water. While the second alcohol produces SOx, NOx, CO, and other harmful byproducts
Dear Soheila,
For me, of course, the burning process of n-butanol only produces CO2 and H2O. In blending process of n-buthanol into gasoline to get bio-gasoline, after burning, SOx,NOx and harmful byproducts were created from various components (C,H,N,S) in initially gasoline.
Adding alcohol (ethanol, buthanol) into gasoline contribute to reduce the amount of harmful products after burning
Hello Soheila,
I would like to share my views on this:
Let me ask you that is the combustion carried out in the presence of pure oxygen? If NOx and SOx also accompany the combustion products, then I am sure that the combustion has been carried out in the presence of air provided the alcohol contains only C H and O.
The Nitrogen present in the air after getting the activation temperature of >1600C starts forming a variety of oxides with excess oxygen present around it and similar is the case with sulfur. The NOx and SOx are a function of temperature, more is the temperature, more N-N bonds will get broken and more fractions of NOx will be formed.
So if you do not want NOx and SOx in your combustion products, try conducting the experiment in pure oxygen.
If you still get NOx and SOx in your products, Check the elemental analysis (C,H,N,S) of the alcohol producing NOx and SOx.
Please let me know about the results of this reinvestigation.
I hope this answers your query.
Regards
Harmanpreet Singh
What are you burning alcohol with (or what is the 2nd reactant in the reaction with Alcohol)
Alcohol + O2 > CO2, H2, CO, H2O, Heat
Alcohol + Air > CO2, H2, CO, H2O, NOx, SOx, Heat
N and S are constituents of Air
N and S may be a contamination in your alcohol.
Dear Soheila,
To the best of my knowledge, for the case of complete combustion of n-butanol, the products should be CO2 and H2O.
However, in fact, in blending process of n-butanol into gasoline, the undesired products such as NOx and SOx were also generated since the initial gasoline has various elements (C, H, N, S, O).
Regards,
Obie
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