Université de Fribourg

Distribution of aluminum over different T-sites in ferrierite zeolites studied with aluminum valence to core X-ray emission spectroscopy

Bohinc, R. ; Hoszowska, Joanna ; Dousse, Jean-Claude ; B³achucki, Wojciech Maria ; Zeeshan, Faisal ; Kayser, Yves ; Nachtegaal, Maarten ; Pinar, A. B. ; Bokhoven, Jeroen A. van

In: Physical Chemistry Chemical Physics, 2017, vol. 19, no. 43, p. 29271–29277

The potential of valence to core Al X-ray emission spectroscopy to determine aluminum distribution in ferrierite zeolites was investigated. The recorded emission spectra of four samples prepared with different structure directing agents exhibit slight variations in the position of the main emission peak and the intensity of its low energy shoulder. Theoretical calculations indicate that an...

Université de Fribourg

Dissociation of chloromethanes upon resonant σ* excitation studied by x-ray scattering

Bohinc, R. ; Žitnik, M. ; Bučar, K. ; Kavčič, Matjaz ; Journel, L. ; Guillemin, R. ; Marchenko, T. ; Simon, M. ; Cao, Wei

In: The Journal of Chemical Physics, 2014, vol. 139, no. 13, p. 134302

The dissociation process following the Cl K-shell excitation to σ* resonances is studied by high resolution spectroscopy of resonant elastic and inelastic x-ray scattering on CH3Cl, CH2Cl2, CHCl3, and CCl4 molecules. Calculations employing the transition potential and Delta-Kohn-Sham DFT approach are in good agreement with the measured total fluorescence yield and show the presence of...