Physical organic chemistry Antidetonation additives for gasoline
What modern antidetonation additives in gasoline provide for Euro 5 standards?
I cannot find any information on such additives. Can you please share some literature on fuels?
@nanochimik47, methyl tert-butyl ether, ethyl tert-butyl ether, methyl tert-amyl ether, diisopropyl ether, methyl second-pentyl ether.
They increase the detonation stability of gasoline vapors, hence the octane number
@amalgama The function of anti-knock additives is to destroy peroxides and create an obstacle to their accumulation. This improves the performance properties of gasoline.
@damiryagudin You wrote earlier that antiknock agents destroy peroxides, so which ones, where are they formed from?
@argentum Here we are talking about the compression of the fuel-air mixture (pre-flame oxidation of fuel), at which a high temperature begins to develop. As a result, hydrocarbons are oxidized and a large amount of peroxides is formed. Since peroxides are chemically unstable, they begin to decompose at a high rate, which means that their decomposition occurs with an explosion.
Okay, I understand you peroxides as an intermediate stage in the oxidation of alkanes
@damiryagudin Do you know what chemical reaction helps to prevent peroxide formation?
@chaoticgood Thermolysis (decomposition of hydroperoxides) with the formation of aromatic alcohols, ketones, carboxylic acids.