Patent · US Expired

Method of producing hydrogen peroxide and reaction promoters therefor

US6355815B1 · kind B1 · utility

4Cited by

8References

6Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Jürgen Glenneberg · Offenbach, DE
Gustaf Goor · Hanau, DE
Eugen Staab · Mobile, US
Hubert Angert · Hanau, DE

Key dates

Filing date	Jul 27, 2000
Grant date	Mar 12, 2002
Priority date	—
Expiry date	Nov 29, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C50/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

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)-&bgr;-tetrahydroanthraquinone (THIHAQ), and (ii) at least one reaction carrier from the series of the 2-(C1- to C5)-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 H2O2 capacity, improved hydrogenation kinetics and lesser susceptibility to disturbances. A method for making THIHAQ is also disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.