| abstract |
The invention relates to the anthraquinone cycle for the production of hydrogen peroxide using at least two differently substituted 2-alkylanthraquinones and / or their tetrahydro derivatives. The working solution to be used according to the invention contains (1) 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 2- (C¶1¶ to C¶5¶) alkylanthraquinones, in particular 2-ethylanthraquinone (EAQ), and their tetrahydro derivatives, reaction carriers according to (i) making up 5 to 95 mol%, in particular 20 to 50 mol%, of all reaction carriers. The process is characterized by a higher H¶2¶O¶2¶ capacity, improved hydrogenation kinetics and less susceptibility to faults. THIHAQ is a new substance. |