9 Result(s)
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Article
Gergely Farkas
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Article
Open AccessContinuous Flow Friedel–Crafts Alkylation Catalyzed by Silica Supported Phosphotungstic Acid: An Environmentally Benign Process
Six silica-supported phosphotungstic acid catalysts (PTA/SiO2) of different composition (20–70 wt% PTA content) have been synthesized and characterized by elemental analysis, BET, BJH, NH3-TPD methods, FT-IR spec...
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Open AccessSulfonated Phosphine Ligands in the Ruthenium Catalyzed Biphasic Hydrogenation of Unsaturated Hydrocarbons
The hydrogenation of monocyclic aromatic hydrocarbons by ruthenium catalysts has been investigated in the presence of sulfonated monophosphine ligands with different stereoelectronic properties under biphasic ...
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Matrix Transformation in Boron Containing High-Temperature Co–Re–Cr Alloys
An addition of boron largely increases the ductility in polycrystalline high-temperature Co–Re alloys. Therefore, the effect of boron on the alloy structural characteristics is of high importance for the stabi...
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Immobilized phosphine–phosphite rhodium complexes: highly active and enantioselective catalysts for asymmetric hydrogenation under continuous flow conditions
The asymmetric hydrogenation of benchmark substrates dimethyl itaconate and (Z)-α-acetamidocinnamic acid methyl ester with chiral pentane-2,4-diyl-based phosphine–phosphite Rh complexes immobilized on the support...
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Aminoalkyl-phosphine (P,N) ligands with pentane-2,4-diyl backbone in asymmetric allylic substitution reactions
The asymmetric allylic substitution reaction of rac-1,3-diaryl-2-propenyl acetates with several C- and N-nucleophiles catalyzed by the palladium-complexes of eleven structurally analogous aminoalkyl-phosphines (P...
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In situ investigation of deformation mechanisms in magnesium-based metal matrix composites
We studied the effect of short fibers on the mechanical properties of a magnesium alloy. In particular, deformation mechanisms in a Mg-Al-Sr alloy reinforced with short alumina fibers were studied in situ usin...
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Student evaluations of training and lecture courses: development of the COURSEQUAL method
In a competitive higher education environment service quality is a highly important issue. In this sector, it may have long term effects for both the student and the institution, as it may influence student re...
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Plastic Properties of a Mg-Al-Ca Alloy Reinforced with Short Saffil Fibers
AX41 magnesium alloy was reinforced with short Saffil fibers using squeeze cast technology. Samples of the composite were deformed in compression at elevated temperatures. The work hardening rate as a function...
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A Continuous-Flow System for Asymmetric Hydrogenation Using Supported Chiral Catalysts
Highly active immobilized hydrogenation catalytic systems were used in the H-Cube™ hydrogenation reactor. “In situ” produced [Rh(COD)((S)-MonoPhos)2]BF4 complex was immobilized on commercially available Al2O3 and...
