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An analysis is presented of the irreversibility of flow and thermal phenomena in innovative streamlined structured packing of catalytic chemical reactors. The fundamental equations of irreversible thermodynamics defining entropy production as a result...
Anthranilic acid (2-amino benzoic acid), a medicinally important compound, is derived from indigo dye (extracted from Indigofera tinctoria) exhibits potential to form complexes with transition metals. We have used sodium salt of anthranilic acid as anion...
The work concerned the preparation of catalytically active copper oxides by electrochemical oxidation. The obtained catalysts were tested for the oxidation of methane with a concentration below 1% vol. in the air.
The selection of carbon sources and the biosynthesis of polyhydroxybutyrate (PHB) by the Azotobacter vinelandii N-15 strain using renewable raw materials were investigated. Among the tested substrates (starch, sucrose, molasses, bran), molasses as the...
This review summarizes the most important measurement techniques for determination of the volumetric liquid-phase mass transfer coefficient kLa. In addition, the main empirical correlations (with their applicability ranges) for kLa estimation are presented....
This work presents a method for the preparation of zirconia-silica monoliths with improved porosity and their application in a continuous-flow system for cascade deacetalization and Knoevenagel condensation reactions carried out in two microreactors...
Cu/Zr catalysts with about 4% by mass Ga or La addn. were prepared and tested in a continuous flow fixed-bed reactor, in the temp. range of 433–573 K, with an initial molar ratio of ethanol to water of 1:3. The properties of obtained catalysts...
A significant problem in hard coal mining is the utilisation of ventilation air methane (VAM). Two basic methane combustion methods, thermal (homogeneous) and catalytic oxidation, are analysed in detail in this paper. Both processes are compared based...
This study reports the effects of magnetic alignment of the hybrid Fe3O4@ZIF-8 filler and operating parameters (humidity, membrane swelling, feed pressure, and long-term stability) on CO2/N2 separation in Pebax® 1657 thin-film nanocomposite membranes....
Recent studies have reported the fabrication of Polymer-Derived Ceramics (PDCs) materials using Digital Light Processing (DLP). However, these works primarily employed commercially available preceramic polymers (PCPs). In contrast, in this study we took...
The extraction of hydrogen sulfide (H2S) from gases is essential in numerous industrial applications to safeguard human safety, preserve equipment, and mitigate environmental harm. In these circumstances, zeolites are crucial for the extraction of H2S...
Various flow regimes (FRs) are formed in bubble columns (BCs). Their boundaries are comparatively well studied only in an air-water system. In this work, a novel combined index (CI) was defined and extracted from gauge pressure (GP) fluctuations recorded...
