A cyclic anthraquinone process for producing hydrogen peroxide using at least two differently substituted 2-alkylanthraquinones and/or their tetrahydro derivatives. The working solution to be used contains (i) at least one reaction carrier from the series 2-(4-methyl-3-pentenyl) anthraquinone (IHEAQ), 2-(4-methylpentyl) anthraquinone (IHAQ) and their di- and tetrahydro derivatives such as, in particular 2-(4-methylpentyl)-.beta.-tetrahydroanthraquinone (THIHAQ), and (ii) at least one reaction carrier from the series of the 2-(C.sub.1 - to C.sub.5)-alkylanthraquinones, especially 2-ethylanthraquinone (EAQ), and their tetrahydro derivatives. The reaction carriers according to (i) make up 5 to 95 molar %, especially 20 to 50 molar % of all reaction carrier. The method is distinguished by greater H.sub.2 O.sub.2 capacity, improved hydrogenation kinetics and lesser susceptibility to disturbances. A method for making THIHAQ is also disclosed.

Um processo cíclico do anthraquinone para produzir o peroxide de hidrogênio usando ao menos dois 2-alkylanthraquinones diferentemente substituídos e/ou seus derivatives do tetrahydro. A solução trabalhando a ser usada contem (i) ao menos um portador da reação do anthraquinone 2-(4-2-(4-methyl-3-pentenyl)-3-pentenyl) da série (IHEAQ), 2-(4-methylpentyl) anthraquinone (IHAQ) e seus derivatives di- e do tetrahydro como, em 2-(4-methylpentyl)-.beta.-tetrahydroanthraquinone particular (THIHAQ), e (ii) ao menos um portador da reação da série do 2-(C.sub.1 - a C.sub.5)-alkylanthraquinones, especial a 2-ethylanthraquinone (EAQ), e a seus derivatives do tetrahydro. Os portadores da reação de acordo com (i) fazem acima 5 a 95 % molar, especial 20 a 50 % molar de todo o portador da reação. O método é distinguido por uma capacidade mais grande de H.sub.2 O.sub.2, pelo kinetics melhorado do hydrogenation e pelo pouco susceptibility aos distúrbios. Um método para fazer THIHAQ é divulgado também.

 
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