Dr. rer. nat. Gudrun Scholz

Profil

Zusammenfassung

Dr. Gudrun Scholz entwickelt und charakterisiert Materialien durch chemische Synthese und Strukturanalytik, mit Schwerpunkt auf Fluoride und Oxide für katalytische Anwendungen. Sie beherrscht Sol-Gel-Synthesen zur gezielten Herstellung von Nanomaterialien mit definierten Säureeigenschaften und nutzt spektroskopische Methoden zur Strukturaufklärung. Ihre Expertise ist relevant für die Katalyse, Materialoptimierung und die Umwandlung von Biomasse in Chemikalien.

Skills

Name

Dr. rer. nat. Gudrun Scholz

Titel

Dr. rer. nat.

Fakultät

Mathematisch-Naturwissenschaftliche Fakultät

Institut

Institut für Chemie

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HU-FIS-Profil

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28.6.2026, 01:12:44

• Atomarer Wasserstoff als Spinsonde in thermisch und mechanisch aktivierten Materialien

  Quelle ↗

  Zeitraum: 01/2000 - 02/2005 Projektleitung: Dr. rer. nat. Gudrun Scholz

• Untersuchung der Einflußfaktoren bei der Synthese klarer MgF2-Sole für die Herstellung transparenter, niedrigbrechender Schichten

  Quelle ↗

  Förderer: Wirtschaftsunternehmen / gewerbliche Wirtschaft Zeitraum: 10/2010 - 02/2011 Projektleitung: Dr. rer. nat. Gudrun Scholz

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• Niobium pentoxide nanomaterials with distorted structures as efficient acid catalysts

  2019

  Communications Chemistry · 124 Zitationen · DOI

  Abstract 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 specific practical processes. Here we show a synthesis approach in acetophenone, which produces nanostructured niobium pentoxides with varying structure and acidity that act as efficient acid catalysts. The oxides have orthorhombic structures with different extents of distortions and coordinatively unsaturated metal atoms. A strong dependence is observed between the type and strength of the acid sites and specific structural motifs. Ultrasmall niobium pentoxide nanoparticles, which have strong Brønsted acidity, as well as Lewis acidity, give product yields of 96% (3 h, 140 °C, 100% conversion), 85% (3 h, 140 °C, 86% conversion), and 100% (3 h, 110 °C, 100% conversion) in the reactions of furfuryl alcohol, 5-(hydroxymethyl)furfural, and α-angelica lactone with ethanol, respectively.

• Catalytic Hydrodefluorination of Fluoromethanes at Room Temperature by Silylium‐ion‐like Surface Species

  2013

  Angewandte Chemie International Edition · 113 Zitationen · DOI

  'Al'l about F: Aluminum chlorofluoride (ACF) catalyzes the hydrodefluorination, as well as Friedel–Crafts reactions of fluorinated methanes in the presence of Et3SiH. A surface-bound silylium-ion-like species is considered to be a crucial intermediate in achieving the CF bond cleavage.

• Novel Sol–Gel Synthesis of Acidic MgF_2−<i>x</i>(OH)_<i>x</i> Materials

  2008

  Chemistry - A European Journal · 106 Zitationen · DOI

  Novel magnesium fluorides have been prepared by a new fluorolytic sol-gel synthesis for fluoride materials based on aqueous HF. By changing the amount of water at constant stoichiometric amount of HF, it is possible to tune the surface acidity of the resulting partly hydroxylated magnesium fluorides. These materials possess medium-strength Lewis acid sites and, by increasing the amount of water, Brønsted acid sites as well. Magnesium hydroxyl groups normally have a basic nature and only with this new synthetic route is it possible to create Brønsted acidic magnesium hydroxyl groups. XRD, MAS NMR, TEM, thermal analysis, and elemental analysis have been applied to study the structure, composition, and thermal behaviour of the bulk materials. XPS measurements, FTIR with probe molecules, and the determination of N(2)/Ar adsorption-desorption isotherms have been carried out to investigate the surface properties. Furthermore, activity data have indicated that the tuning of the acidic properties makes these materials versatile catalysts for different classes of reactions, such as the synthesis of (all-rac)-[alpha]-tocopherol through the condensation of 2,3,6-trimethylhydroquinone (TMHQ) with isophytol (IP).

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