Organic peroxides are involved in many fields such as polymer synthesis, biochemical synthesis and metabolism, environmental pollution, food chemistry and cosmetics industry. Iodometry is usually used to analyze peroxides, which requires time and reagents. The gas chromatography internal standard method is used for the determination of peroxides, but the internal standard method is only suitable for analyzing peroxides that are stable and easy to evaporate at low temperatures. The peak area of the thermal decomposition products of peroxides is linearly related to the concentration of peroxides, but there is little specific research on this aspect.
The composition of the pyrolysis products was investigated using the relatively inactive di-tert-butyl peroxide (DTBP) as the research object. It was found that the peak area of the main pyrolysis product acetone showed a linear relationship with the amount of di-tert-butyl peroxide. By utilizing this relationship, the peroxide content can be determined at the same evaporation temperature. Compared with the internal standard method, the results are satisfactory. Di-tert-butyl peroxide decomposes at 200~300 ℃. Manufacturers of tert butyl peroxide choose different inlet temperatures to study the relationship between residual amount and temperature. The Chemical decomposition reaction of di tert butyl lipid peroxide takes place on the O-O bond in the molecule. Therefore, the properties of the hydrocarbon moiety in the tert butyl peroxide molecule are also very important. In the decomposition process of tert butyl peroxides with different structures, in addition to tert butyl oxygen radicals, oxygen-containing hydrocarbon groups with different structures can also be obtained, which play a role in promoting chain reactions.
Therefore, the higher the reaction activity of oxygen-containing hydrocarbon radicals, the higher the efficiency of rapidly leading to the growth of hydrocarbon molecular chains in diesel fuel. From the perspective of chemical resonance, tert butyl peroxide can improve the Cetane number of diesel oil. The key lies in the fact that di-tert-butyl peroxide manufacturers can easily decompose this compound into oxygen-containing free radicals or oxygen-containing compounds. The O-O bond decomposition in tert butyl peroxide has low activation energy.
Therefore, the presence of these di tert butylperoxides promotes the reduction of the activation energy of diesel during the spontaneous combustion process to be consistent with the activation energy of tert butylperoxides, thereby enabling rapid combustion of diesel in the combustion chamber. In addition, the decomposition products of these tert butyl peroxides are initiators of chain reactions during diesel combustion, reducing the initial temperature of diesel combustion reactions and thereby improving the ignition performance of diesel. The decomposition product of di-tert-butyl peroxide is an oxygen-containing free radical (RO, ROO), which has a strong affinity for electrons, i.e. strong electrophilicity.https://www.kz-opchem.com/organic-peroxides/dtbp-cas-110-05-4-di-tert-butyl-peroxide.html