Carlos Bornes

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Verified

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• Doctor of Philosophy
• PostDoc Position at Charles University in Prague

ITQ‐13 is a medium‐pore zeolite that can be prepared in all‐silica form and as silicogermanate with Si/Ge ratios as low as 3. Usually synthesised in the presence of fluoride, ITQ‐13 is among the very few systems containing fluoride anions in two distinct cage types, cube‐like d4r units and [4 ⋅ 5⁶] cages. Here, dispersion‐corrected density function...

The many studies that have been conducted on water adsorption on zeolites were carried out in “adsorption” mode, from adsorption isotherms or single‐point measurements, with the samples being first degassed at high temperature, and then exposed to water vapor at variable partial pressure. Here, we report Thermogravimetric Analysis (TGA) studies of...

Two-dimensional 1H-31P heteronuclear correlation NMR of trimethylphosphine oxide (TMPO) adsorbed in zeolites, in tandem with DFT calculations, challenges previous one-dimensional 31P NMR assignments, enabling the unambiguous discrimination of Brønsted and...

Composite agarose films were prepared with EuIII containing polyoxometalates, in particular the organic‐inorganic hybrid [Eu(W5O18)2(pic)4]13– (Hpic = 3‐hydroxypicolinic acid) and a Mo blue EuIII derivative. The latter compound shows interesting EuIII based photoluminescence properties, described for a molybdenum blue compound for the first time. I...

One of the main limitations in supporting experimental characterization of Al siting/pairing via modelling is the high computational cost of ab initio calculations. For this reason, most works rely on...

Nanoscale flows of liquids can be revealed in various biological processes and underlie a wide range of nanofluidic applications. Though the integral characteristics of these systems, such as permeability and effective diffusion coefficient, can be measured in experiments, the behaviour of the flows within nanochannels is still a matter of speculat...

This study examines the differences in using two primary methods for adsorbing trimethylphosphine oxide (TMPO) onto acid catalysts and their influence on the NMR spectra of TMPO-loaded zeolites. The findings show that TMPO molecules interact with both Brønsted and Lewis acid sites, and that the amount of (TMPO)2H+ dimers formed increases with the a...

The urgency to reduce CO2 emissions and energy costs has driven the investment in solar and wind technologies. However, these sources of energy are intermittent and heavily influenced by weather conditions. To overcome this limitation, it is necessary to combine electricity production with a stable and low-carbon energy source, and biofuels have em...

The identification of acid and nonacid species at the external surface of zeolites remains a major challenge, in contrast to the extensively‐studied internal acid sites. Here, it is shown that the synthesis of zeolite ZSM‐5 samples with distinct particle sizes, combined with solid‐state NMR and computational studies of trimethylphosphine oxide (TMP...

ITQ-13 is a medium-pore zeolite that can be prepared in all-silica form and as silicogermanate with Si/Ge ratios as low as 3. Usually synthesised in the presence of fluoride, ITQ-13 is among the very few systems containing fluoride anions in two distinct cage types, cube-like d4r units and [4·56] cages. Here, dispersion-corrected density functional...

ITQ-13 is a medium-pore zeolite that can be prepared in all-silica form and as silicogermanate with Si/Ge ratios as low as 3. Usually synthesised in the presence of fluoride, ITQ-13 is among the very few systems containing fluoride anions in two distinct cage types, cube-like d4r units and [4·5^6] cages. Here, dispersion-corrected density functiona...