Novel Working Solvent for the Production of Hydrogen Peroxide

Abstract

Hydrogen peroxide is currently manufactured almost exclusively by the cyclic auto-oxidation (AO) process. It is important that the working solution meet the requirement for efficient operations for all steps involved in the cycle and that it chemically produces as great a yield as possible per pass through the cycle. Focusing on these requirements, organic heterocyclic bisamide solvent is proposed and systematically investigated in this work as one working solution component for industrial improvements. Specifically, N,N,N,N-tetrapropyl malonamide is selected as the novel working solution constituent for experimental investigation. From the foregoing experiments, the novel working solutions exhibits a favorable dissolving power for 2-alkylanthraquinones and their corresponding hydroquinone derivatives, great holdup ability for hydrogen, and more advantageous volumetric mass transfer coefficient brought by its physicochemical nature. In favor of these advantages, the kinetics apsect of 2-alkylanthraquinone is observed to be significantly improved. This is characterized by the apparent reaction rate constants, which are substantially in favor of the hydrogenation stage, and in the working compounds hydrogenation is always considered to be the key step for AO process. As a result, improvement in the hydrogenation efficiency of 2-alkylanthraquinone and the hydrogen peroxide yield per cycle are thus obtained in novel working solvents compared with the traditional ones.

Microdispersion of Gas or Water in an Anthraquinone Working Solution for the H2O2 Synthesis Process Intensification

“…All these studies are based on increasing the interfacial surface area of the two phases for process intensification. The Reidl–Pfleiderer process includes three main units, namely, hydrogenation, , oxidation, , and extraction . These three units have similar problems in the industry, such as small interfacial surface area, long reaction time, and very large size of equipment.…”

NASCRE-4 Editorial

“…The excellent participation from the next generation of chemical reaction engineers was a particularly exciting aspect of the meeting and is reflected in the contributions to this special issue. The papers in this VSI () reflect the diverse topics of the meeting, centered on several key unifying themes, including biomass conversion, − catalysis, including catalyst design and modeling, − environmental remediation, , membrane reactors, , novel reactor design, , polymerization, and process intensification and optimization. − …”