Abstract: Hydrogen peroxide is prepared by an auto-oxidation method via hydrogenation in a microreactor. A working solution containing a reactive carrier compound is hydrogenated with hydrogen in a microreactor and is subsequently auto-oxidized to produce hydrogen peroxide.

Abstract: Contaminants, such as volatile organic compounds, are removed from an environmental medium, such as contaminated soil, rock, groundwater, waste water and the like, by treatment with a combination of a persulfate, such as a sodium persulfate, and hydrogen peroxide.

Abstract: An improved method for treating organic compounds present in soil, groundwater and other environments is disclosed. The method involves the use of a peroxygen compound and a chelated transition metal.

Abstract: Contaminants, such as volatile organic compounds, are removed from an environmental medium, such as contaminated soil, rock, groundwater, waste water and the like, by treatment with a combination of a persulfate, such as a sodium persulfate, and hydrogen peroxide.

Abstract: Hydrogen peroxide produced in an auto-oxidation process is recovered from H2O2-containing organic solution via liquid-liquid extraction with an aqueous medium in a device having elongated channels, with a small cross-sectional dimension, that facilitate efficient extraction of aqueous hydrogen peroxide from the organic solution.

Abstract: Hydrogen peroxide is prepared by an auto-oxidation method via oxidation in a microreactor. A working solution containing a reactive carrier compound is hydrogenated with hydrogen in a first step and is subsequently oxidized in a microreactor to produce hydrogen peroxide.

Abstract: Hydrogen peroxide is prepared by an auto-oxidation method via hydrogenation in a microreactor. A working solution containing a reactive carrier compound is hydrogenated with hydrogen in a microreactor and is subsequently auto-oxidized to produce hydrogen peroxide.

Abstract: A process is provided to remove inert contaminants from a working compound employed for the manufacture of hydrogen peroxide by the reduction and oxidation of a solution of alkylated anthraquinones and derivatives. The contaminants are removed by the process of contacting the working compound, a solvent, and carbon dioxide to form a first portion and a residue portion, separating the two portions and recovering the purified working solution from the first portion.

Abstract: A process is provided to regenerate and purify a working solution for the manufacture of hydrogen peroxide by the reduction and oxidation of a solution of alkylated anthraquinones and derivatives. The regeneration and purification is effected by removing inerts by contacting the working solution and an noncyclic hydrocarbon to form a liquid first phase and a second phase, separating the two phases and recovering both the noncyclic hydrocarbon and the purified working solution by distillation.

Abstract: The invention is for a process for removing unalkylated anthraquinones from alkylated anthraquinone by forming a solution thereof, reducing the solution sufficiently so that at least part of the unalkylated anthraquinone is in the reduced form, and extracting the reduced solution in the absence of an oxidizing agent with an aqueous alkaline solution. The process is especially suited for removing anthraquinone from an alkylated anthraquinone for use in the manufacture of hydrogen peroxide by reducing and oxidizing a solution of the alkylated anthraquinone.

Abstract: The invention provides a process to increase the mol ratio of nuclearly hydrogenated working compound to the total working solution for the production of hydrogen peroxide by the cyclic reduction, oxidation, and extraction of an alkylated anthraquinone. The process produces the nuclearly hydrogenated working compound without producing substantial quantities of undesired by-products.

Abstract: The invention provides a process to increase the mol ratio of nuclearly hydrogenated working compound to the total working compound in a make-up solution to be added to the working solution of an operating plant in producing hydrogen peroxide by the cyclic reduction, oxidation, and extraction of an alkylated anthraquinone. The process produces the nuclearly hydrogenated working compound in the make-up solution without producing substantial quantities of undesired by-products.