Low Temperature Acrolein to Acrylic Acid Oxidation with Hydrogen Peroxide on Se-Organic Catalysts

Abstract

Catalytic performance of Se-containing organic substances, namely methylseleninic acid, benzeneseleninic acid, phenylselenol and diphenyldiselenide, has been tested as potential catalysts for unsaturated aldehydes oxidation by hydrogen peroxide. All tested substances proved to be active in the acrolein oxidation reaction but showed different efficiency regarding used solvents and the products of reaction-acrylic acid or methyl acrylate. Optimal catalyst, reaction conditions and solvent for acrylic acid synthesis have been determined.

Novel Ni/pHEMA-gr-PVP Composites Obtained by Polymerization with Simultaneous Metal Deposition: Structure and Properties

“…The introduction of metal particles into the structure of hydrogels opens additional possibilities for providing them with new properties, for example, bactericidal, antifungal, fluorescent, optical, catalytic, electrical, and magnetic properties, as well as their changes in the desired direction. Such materials are already used in biotechnology and medicine [14]; in the production of packaging materials [15], microelectronics [7], optics and optoelectronics [9], chemical catalysis [16,17], and sensory devices [18]; and in other industries.…”

Se-driven microgel catalysts for oxidation processes

“…1a). This phenomenon can be explained by inhibitory effect of water on the oxidation reactions as has been reported before [2]. On the other hand, previous studies of microgel colloidal properties in "water in oil" and "oil in water" systems shown that there are droplets of water formed in oil regardless the proportion of oil and water phases [3].…”

“…Two heterophase systems were used: "water in oil" (toluene:water ratio -4:1) and "oil in water" (toluene:water ratio -1:4). Catalytic performance of Se-modified microgels was compared to H 2 SeO 3 and diphenyl diselenide (DPDS) -highly active catalysts in oxidation reaction [2] and diselenide crosslinker (X-linker) that don't have surfactant properties (Fig. 1).…”

Synthesis of acrylic acid and acrylic esters via oxidation and oxidative alkoxylation of acrolein under mild conditions with selenium-modified microgel catalysts

“…According to the literature review 10,12,15,20,33,34 and our preliminary results, 32,33 the obligatory condition for the reaction to occur is the presence of a seleninic group, which, when interacting with hydrogen peroxide, gives a perseleninic group that acts as a catalyst 20 (Fig. 1b).…”