8 Dokumente gefunden

Stepwise synthesis of symmetric and asymmetric Anderson-polyoxometalates for light-driven hydrogen evolution

A new strategy to assemble multifunctional Anderson-type polyoxometalate platforms for the light-driven hydrogen evolution reaction (HER) is presented. The stepwise coordination of precursor metal complexes enables binding of an Ir photosensitizer or a Pt HER catalyst to the bipyridine coordination site.…
Cambridge: The Royal Society of Chemistry, 2025-12-09

A Missing Member of the Anderson–Evans Family: Synthesis and Characterization of the Trimethylolmethane-Capped {MnMo 6 O…

In this work, the synthesis and structural characterization of the smallest possible member of the family of bis -functionalized {MnMo 6 O 24 } Anderson–Evans polyoxometalates (POMs) is reported. The synthesis of the title compound TBA 3 {[HC(CH 2 O) 3 ] 2 MnMo 6 O 18 } ( 1 ) was accomplished by using…
Basel: MDPI, 2025-07-29

bis (2-Phenylpyridinato)-[4,4′- bis (iodoethynyl)-2,2′-bipyridine]-iridium(III) Hexafluorophosphate

aus: Molbank
This work presents the synthesis and structural characterization of a novel type of biscyclometalated Ir(III) complex, which is equipped with two iodoethynyl moieties on its 2,2′-bipyridine (bpy) ligand. Iodoethynyl moieties represent prominent donor systems for the formation of supramolecular structures…
Basel: MDPI, 2025-06-18

Automated screening of precipitation polymerizations and evaluation using image recognition for divinylbenzene and methacrylic…

Abstract By applying automated high‐throughput experimentation, 63 precipitation polymerizations of divinylbenzene and methacrylic acid were performed with a total of 1638 samples analyzed by gas chromatography (GC), nuclear magnetic resonance (NMR) spectroscopy, and scanning electron microscopy (SEM).…
New York, NY [u.a.]: Wiley, 2024-07-16

Investigation of the cooperative-effects of Lewis- and Brønstedt acids in homogeneously catalyzed OME fuel synthesis by inline-NMR…

Via inline-nuclear magnetic resonance measurements, the homogeneously catalyzed poly(oxymethylene dimethyl ether) fuel synthesis using trioxane and dimethoxy methane is investigated. Besides the Brønsted acid (BA) catalyst triflic acid (TfOH) different metal halides are studied as Lewis-acidic (LA) catalysts.…
London: Royal Society of Chemistry, 2024-05-08

Application of Digital Methods in Polymer Science and Engineering

The development of new polymer materials is an emerging field for more than 100 years. However, it is currently facing major challenges and the application of digital methods can help to develop new processes, discover new materials and, thus, contribute to the challenges of today and the future. Though,…
Weinheim: Wiley-VCH, 2024-02-19

Oxymethylene Ether (OME) Fuel Catalyst Screening Using In Situ NMR Spectroscopy

Online NMR measurements are introduced in the current study as a new analytical setup for investigation of the oxymethylene dimethyl ether (OME) synthesis. For the validation of the setup, the newly established method is compared with state‐of‐the‐art gas chromatographic analysis. Afterwards, the influence…
Weinheim: Wiley-VCH, 2023-06-15

Comparing Microwave and Classical Synthesis of Oxymethylene Dimethyl Ethers

Polyoxymethylene dimethyl ethers (OME n ) are considered as substituents or additives for fossil diesel fuel. Efficiency of the synthesis is crucial for the development of industrial scale production plants. Therefore, the design of suitable catalysts and the efficient heating play important roles in…
Weinheim: Wiley, 2022-07-19