Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Salzschmelze"”.
-
Meso- und mikroporöse Hochleistungspolymere : Synthese, Analytik und Anwendungen
… werden, dass lineares PBI in einer eutektischen Salzschmelze aus Lithium- und Kaliumchlorid synthetisiert werden kann. Die Umsetzung der spirobifluorenbasierten Monomere zu löslichem oder vernetztem PBI ist in der Salzschmelze möglich.
-
Zur Oligomerisierung von 1-Decen mit ionischen Flüssigkeiten
Oligomers of higher olefins like 1-decene, known as polyalphaolefins (PAO), are used as base oils for lubricants and stand out due to a high stability combined with extraordinary greasing properties. Ionic liquids have properties that are variable in a wide range (polarity, acidity) and are …
-
Molekulardynamische Simulation von Alkalinitratschmelzen
Subject of this thesis is molecular dynamics simulation of molten alkali nitrate. The well-known Born-Mayer-Huggins interaction potentials are improved by calculating the pressure of the melt and adjusting some Van-der-Waals-type attractive addition. These modified potentials are then used to …
-
Amphiphile Phosphane für die Anwendung in neuen polaren Medien
This thesis deals with the synthesis and characterisation of phosphine ligands for the special use in polar media specially ionic liquids. The novel phosphine ligands have been functionalised with ionic or polar groups for catalyst immobilization tasks. A point of main effort were imidazol- and …
-
New strategies for multiphase catalysis using supercritical carbon dioxide
The work reported in this thesis deals with the development of an effective strategy for the recycling of a multipurpose catalyst. An immobilized metal complex acts as a "catalyst cartridge" applicable in a variety of catalytic reactions without using any volatile organic solvents but only carbon …
-
Zur Aromatenfunktionalisierung in Gegenwart ionischer Flüssigkeiten
The goal of this dissertation was to identify ionic liquids with a catalytic effect on the test reactions (aromatic Halex reaction and Friedel-Crafts-Acylation). Beside that, ionic liquids have been synthesized in pure form and characterised by NMR, cyclovoltammetrie, UV-vis-spectroscopy and …
-
On new allotropes and nanostructures of carbon nitrides
In the first section of the thesis graphitic carbon nitride was for the first time synthesised using the high-temperature condensation of dicyandiamide (DCDA) – a simple molecular precursor – in a eutectic salt melt of lithium chloride and potassium chloride. The extent of condensation, namely next …
-
New approaches to catalytic C-H and C-C bond cleavage with Ruthenium complexes
The first part of the presented work deals with the synthesis and the characterization of the complexes [(IMes)Ru(H2)2(H)2(PCy3)] (1), [(IMes)2Ru(H2)2(H)2] (2) and its nitrogen derivative [(IMes)2Ru(H2)(N2)(H)2] (3) (IMes = 1,3-dimesityl-1,3-dihydro-2H-imidazol-2-ylidene). All the ruthenium …
-
Entwicklung anion-chiraler ionischer Flüssigkeiten und ihre Anwendung in der Katalyse
The aim of this dissertation was the investigation of anion-chiral ionic liquids (ILs) in catalytic reactions in order to investigate a potential chirality transfer. Thus chirality has been incorporated into the anion of the molten salt. There are several examples of catalytic reactions known in …