2020 September

Za K7 fb stran_hudelja sep 2020

23 Sep: New publication: Triggering the Aqueous Interparticle Association of γ‒Al2O3 Hierarchical Assemblies Using Divalent Cations and Cellulose Nanofibers

New publication: Triggering the Aqueous Interparticle Association of γ‒Al2O3 Hierarchical Assemblies Using Divalent Cations and Cellulose Nanofibers. We successfully prepared stable aqueous suspensions, containing hierarchically assembled, mesoporous γ‒Al2O3 particles with high surface area. Addition of divalent cations such as Mg2+ or Ca2+ or cellulose nanofibers triggered a formation of various interparticle associations, which hindered or even prevented sedimentation. Preparation of such suspensions is especially important for preparation of advanced, porous ceramic materials relevant in catalysis and adsorption. The work was published in the leading scientific publication dealing with ceramic materials Journal of the European Ceramic Society.

T524

04 Sep: NEW ARTICLE: Green Chemistry- Hierarchical Ru-bearing alumina/magnetic iron-oxide composite for the magnetically heated hydrogenation of furfural

Andraž Kocjan was involved in an interdisciplinary research directed by Sašo Gyergyek and Darko Makovec from the Department for Materials Synthesis and from the Department of Nanostructured Materials in a collaboration with researchers from the Department of Catalysis and Reaction Engineering of the National Institute of Chemistry. The work was published in the renowned scientific journal Green Chemistry, entitled Hierarchical Ru-bearing Alumina/Magnetic Iron-Oxide Composite for the Magnetically Heated Hydrogenation of Furfural. The paper demonstrates application of magnetic heating of nanoparticles in AC-field to drive chemical reaction. The authors showed that conversion of furfural to furfuryl alcohol over the catalyst in the same time interval reached 95% when “targeted” heating by AC magnetic field was used, but only 63% when conventional heating was applied. They were the first to show that a well-designed hierarchical composite (UK patent) can simultaneously serve as a catalyst and heat source to drive a technologically important…