каталіз

Advances in Heterogenization of Catalysts for Fine Organic Synthesis via Catalytic Oxidation in Liquid Medium: A Review

Heterogenization of catalysts offers numerous advantages over homogeneous systems, including enhanced stability, reusability, and fine-tuning of properties. This approach is particularly relevant for developing environmentally friendly and sustainable catalytic processes. Microgels, with their unique properties, emerge as promising platforms for catalyst heterogenization. These crosslinked polymer networks exhibit tunable size, porosity, and responsiveness to external stimuli, making them ideal for encapsulating and stabilizing catalytic species.

Advances in Selective Oxidation of Organic Sulfides by Hydrogen Peroxide over Titanium Catalyst

Hydrogen peroxide (H2O2) is a versatile oxidant used in various chemical syntheses, including the selective oxidation of organic compounds and the conversion of organic pollutants in wastewater. The increasing interest in H2O2 as a “green oxidant” is largely due to environmental considerations assigned to the clean nature of hydrogen peroxide as an oxidant because its byproduct is only water.

ELECTROCHEMICAL OXIDATION OF CH3OH ON THE SURFACE OF NANOSTRUCTURED BIMETALLIC Pd-Au/GC ELECTRODES

Binary Pd-M (M – d-metals) systems: Pd-Ni, Pd-Cu, Pd-Ag, Pd-Au are the type of bimetallic nanomaterials which in the last decade are the subject of interested due to their increased catalytic activity in the processes of anodic oxidation of low-molecular organic substances, in particular for the oxidation of ethanol, methanol, glycerin, formic acid, which is the subject of the application in sensors and, especially in the fuel cells. Perspective for the last in the aspect of catalysis of anode and cathode processes is a system of Pd-Au.

Catalytic intensification of the cyclohexane oxidation

Methods of intensification of the process of liquid-phase cyclohexane oxidation in the presence of complex catalytic systems, catalytic solutions and individual catalysts have been considered in the article. Quantitative and qualitative influences of binary catalytic systems which contain cobalt naphthenate and organic modifiers of different nature have been determined. The research confirmed the assumption of complexation involving components of the catalytic solutions in the reaction mixture. The structural formula of possible intermediate catalytic complex has been built.

Багатоатомні спирти у процесі окиснення циклогексану

Quantitative and qualitative influence of the binary catalytic systems containing [cobalt naphthenate – polyhydric alcohol] on liquid-phase homogeneous catalytic oxidation of cyclohexane was considered. Розглянуто кількісний та якісний вплив бінарних каталітичних систем складу [нафтенат кобальту – багатоатомний спирт] на рідиннофазне гомогенно-каталітичне окиснення циклогексану. 

Використання амінокислот в процесі окиснення циклогексану

The basic regularities of influence of amino acid glycine in the homogeneous liquid-phase catalytic cyclohexane oxidation was researched. 
Досліджено  основні  закономірності  впливу  амінокислоти  гліцин  на  рідиннофазне гомогенно-каталітичне окиснення циклогексану.

Визначення структури проміжних каталітичних комплексів у процесі окиснення циклогексану

Проведено спектрографічні дослідження бінарних каталітичних систем для
процесу окиснення циклогексану на основі нафтенату кобальту з використанням
органічних модифікаторів різної природи – етанолу та гліцину у циклогексаноні.
Проведені дослідження підтверджують припущення про комплексоутворення за участю
всіх компонентів каталітичних розчинів. Побудовано структурні формули ймовірних
комплексів каталітичних систем. The spectral analysis of binary catalytic solutions based on cobalt naphthenate for the