It can be seen that this synthesis method has the following disadvantages compared with tert-butyl alcohol sulfuric acid method: the amount of sulfuric acid and hydrogen peroxide is too large, both of which are twice the mole number of isobutylene; Both reactions need low temperature conditions; The raw material isobutylene is a gaseous substance, which is not convenient for storage and transportation, and there is also the problem of tail gas absorption; In addition, the low content of TBHP in crude products also limits its industrial application.
Secondly, the oxidative synthesis of isobutane is similar to cumene. Tertiary hydrocarbons in isobutane molecules are very active. In the presence of hydrogen bromide or free radical initiator, active radicals generated by thermal decomposition of free radical initiator capture tertiary hydrocarbons in isobutane molecules to generate tertiary butyl radicals, which react with oxygen molecules to generate tertiary butyl peroxy radicals, which immediately capture tertiary hydrocarbons in isobutane to generate tertiary butyl hydrogen peroxide and tertiary butyl autooxidation.
Grignard reagent synthesis method Grignard reagent synthesis method is a new method for preparing tert-butyl hydrogen peroxide, which was disclosed by Wailing and Montclair in US patent 1957. The method comprises the following steps: reacting tert-butyl chloride with magnesium powder to prepare Grignard reagent tert-butyl magnesium chloride, then reacting with excess oxygen in ether solvent at extremely low temperature to prepare tert-butyl magnesium peroxide, and finally hydrolyzing in the presence of strong acid to prepare tert-butyl hydrogen peroxide.
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