J
Julianna Hajek
Researcher at Ghent University
Publications - 18
Citations - 1889
Julianna Hajek is an academic researcher from Ghent University. The author has contributed to research in topics: Catalysis & Lewis acids and bases. The author has an hindex of 14, co-authored 18 publications receiving 1407 citations. Previous affiliations of Julianna Hajek include Wrocław University of Technology.
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Metal–organic and covalent organic frameworks as single-site catalysts
Sven Rogge,Anastasiya Bavykina,Julianna Hajek,Hermenegildo García,Alma I. Olivos-Suarez,Antonio Sepúlveda-Escribano,Alexandre Vimont,Guillaume Clet,Philippe Bazin,Freek Kapteijn,Marco Daturi,Enrique V. Ramos-Fernandez,F.X. Llabrés i Xamena,Veronique Van Speybroeck,Jorge Gascon +14 more
TL;DR: The potential of metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) as platforms for the development of heterogeneous single-site catalysts is reviewed thoroughly.
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Active site engineering in UiO-66 type metal-organic frameworks by intentional creation of defects: a theoretical rationalization
Matthias Vandichel,Julianna Hajek,Frederik Vermoortele,Michel Waroquier,Dirk De Vos,Veronique Van Speybroeck +5 more
TL;DR: In this paper, the function of the modulators under real synthesis conditions is rationalized by constructing free energy diagrams, and a mechanistic pathway is presented for the dehydroxylation process of the hexanuclear Zr cluster.
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Nature of active sites on UiO-66 and beneficial influence of water in the catalysis of Fischer esterification
Chiara Caratelli,Julianna Hajek,Francisco G. Cirujano,Michel Waroquier,Francesc X. Llabrés i Xamena,Veronique Van Speybroeck +5 more
TL;DR: In this article, molecular modeling techniques combined with new experimental data on various defective hydrated and dehydrated materials allow to unravel the nature and role of defective active sites in the Fischer esterification and the role of coordinated water molecules to provide additional Bronsted sites.
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Engineering a Highly Defective Stable UiO-66 with Tunable Lewis- Brønsted Acidity: The Role of the Hemilabile Linker.
Xiao Feng,Julianna Hajek,Himanshu Sekhar Jena,Guangbo Wang,Guangbo Wang,Savita Kaliya Perumal Veerapandian,Rino Morent,Nathalie De Geyter,Karen Leyssens,Alexander E J Hoffman,Vera Meynen,Carlos Marquez,Dirk De Vos,Veronique Van Speybroeck,Karen Leus,Pascal Van Der Voort +15 more
TL;DR: By tuning the number of defects in UiO-66 using PSBA as the hemilabile linker, one can achieve highly defective and stable MOFs and easily control the Brønsted to Lewis acid ratio in the materials and thus their catalytic activity and selectivity.
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Towards metal–organic framework based field effect chemical sensors: UiO-66-NH2 for nerve agent detection
Ivo Stassen,Bart Bueken,Helge Reinsch,Jfm F. M. Oudenhoven,Daan Wouters,Julianna Hajek,Veronique Van Speybroeck,Norbert Stock,Pm M. Vereecken,R. van Schaijk,Dirk De Vos,Rob Ameloot +11 more
TL;DR: In this paper, the work function shift of metal-organic framework UiO-66-NH2 coated electrodes upon exposure to ppb-level concentrations of a target simulant is monitored.