Browsing by Author "Scholz, Gudrun"

Now showing items 1-7 of 7

2020-04-21Zeitschriftenartikel

A HF Loaded Lewis-Acidic Aluminium Chlorofluoride for Hydrofluorination Reactions

Kervarec, Maëva-Charlotte; Kemnitz, Erhard; Scholz, Gudrun; Rudic, Svemir; Braun, Thomas; Jäger, Christian; Michalchuk, Adam; Emmerling, Franziska

The very strong Lewis acid aluminium chlorofluoride (ACF) was loaded with anhydrous HF. The interaction between the surface of the catalyst and HF was investigated using a variety of characterization methods, which ...
2023-03-24Zeitschriftenartikel

An Amorphous Teflate Doped Aluminium Chlorofluoride: A Solid Lewis‐Superacid for the Dehydrofluorination of Fluoroalkanes

Bui, Minh; Hoffmann, Kurt F.; Braun, Thomas; Riedel, Sebastian; Heinekamp, Christian; Scheurell, Kerstin; Scholz, Gudrun; Stawski, Tomasz; Emmerling, Franziska

An anion-doped aluminium chlorofluoride AlCl0.1F2.8(OTeF5)0.1 (ACF-teflate) was synthesized. The material contains pentafluoroorthotellurate (teflate) groups, which mimic fluoride ions electronically, but are sterically ...
2019-11-15Zeitschriftenartikel

Insight into the Structure and Properties of Novel Imidazole-Based Salts of Salicylic Acid

Martins, Inês; Al-Sabbagh, Dominik; Meyer, Klas; Maiwald, Michael; Scholz, Gudrun; Emmerling, Franziska

The preparation of new active pharmaceutical ingredient (API) multicomponent crystal forms, especially co-crystals and salts, is being considered as a reliable strategy to improve API solubility and bioavailability. In ...
2019-11-13Zeitschriftenartikel

Niobium pentoxide nanomaterials with distorted structures as efficient acid catalysts

Skrodczky, Kai; Antunes, Maria Margarida; Han, Xianying; Santangelo, Saveria; Scholz, Gudrun; Valente, Anabela; Pinna, Nicola; Russo, Patrícia A.

Niobium pentoxides are promising acid catalysts for the conversion of biomass into fuels and chemicals. Developing new synthesis routes is essential for designing niobium pentoxide catalysts with improved activity for ...
2017-11-02Zeitschriftenartikel

Sol-Gel-Synthesis of Nanoscopic Complex Metal Fluorides

Rehmer, Alexander; Scheurell, Kerstin; Scholz, Gudrun; Kemnitz, Erhard

The fluorolytic sol-gel synthesis for binary metal fluorides (AlF3, CaF2, MgF2) has been extended to ternary and quaternary alkaline earth metal fluorides (CaAlF5, Ca2AlF7, LiMgAlF6). The formation and crystallization of ...
2021-03-04Zeitschriftenartikel

Structure and properties of fluorinated and non‐fluorinated Ba‐coordination polymers – the position of fluorine makes the difference

Zänker, Steffen; Scholz, Gudrun; Xu, Wenlei; Emmerling, Franziska; Kemnitz, Erhard

As the most electronegative element, fluorine has a strong influence on material properties such as absorption behaviour or chemical and thermal stability. Fluorine can be easily integrated into coordination polymers (CPs) ...
2018-01-30Zeitschriftenartikel

Synthesis and Characterization of Perovskite-Type [K1−xNax]MgF3 Mixed Phases via the Fluorolytic Sol-Gel Synthesis

Schütz, Florian; Lange, Linda; Scheurell, Kerstin; Scholz, Gudrun; Kemnitz, Erhard

The focus of this article is the synthesis of perovskite-type [K1−xNax]MgF3 mixed phases via the room-temperature fluorolytic sol-gel approach. Different molar ratios of K/Na were examined and analyzed by 19F MAS NMR and ...