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Fracture surfaces after biaxial fatigue tests were compared using fractal dimension for three types of metallic materials in smooth and notched specimens made of S355J2 and 10HNAP steels and 2017-T4 aluminium alloy, considering both proportional and...
SO2-rich gases (1.49–7.39% by vol. SO2) were desulfurized with spent lime sorbent (97% by mass CaCO3) in a 1.5 m3 bubble reactor equipped with an innovative slotted gas disperser. Exptl. tests were made for different variants of reactor design,...
The application of copper-based catalysts in the production of pure hydrogen in the steam reforming of ethanol was performed. The tricomponent Cu/Zr catalysts with about 4 mass% addition of nickel, cobalt, or cerium have been prepared in our laboratory....
Numerical studies were conducted on heat transfer in tubes filled with structured catalyst carriers consisting of rosettes, rings and discs in different arrangements. The distribution of gas velocity and temperature were determined on the basis of computational...
Dynamic kinetic resolution (DKR) is one of the most attractive methods for enantioselective synthesis. In the reported studies, lipase B from Candida antarctica (CALB) immobilized on siliceous mesoporous cellular foams (MCF) functionalized with different...
Aluminum oxide is one of the most commonly used materials in the industry. It is used in the field of catalysis, refractories, and optics. Despite the fact that there are many techniques available, there is still a great challenge in obtaining a material...
This work presents the experimental research on feasible intensification of CO2/N2 separation by utilization of the developed supported ionic liquid membranes (SILMs). SILMs were developed through specific impregnation of commercially available ceramic...
In this work, an experimental setup is established to investigate the heat transfer and flow resistance of wire gauzes. Five woven metal sheets of plain-square type differing in wires diameter and mesh size is tested. Based on the measured heat transfer...
In bubble columns (BCs), the reliable identification of the first transition velocity Utrans-1, marking the end of the homogeneous regime, is an essential prerequisite for the successful BC design since this parameter marks the onset of bubble coalescence....
The levulinic acid was esterified with alcohol at an alcohol to acid molar ratio of 3:1, 5:1, and 10:1 in the presence of a 0.1 wt% methanesulfonic acid catalyst. During esterification, the temperature was changed linearly from 373 to 428 K and its average...
Dynamic kinetic resolution (DKR) is one of the most attractive routes to enantioselective synthesis, and ruthenium complexes are often applied as racemization catalysts. Two substituted cyclopentadienyl ruthenium complexes were immobilized covalently...
