SILP Type Catalyst Based on H3PMo12O40: Composition of Heteropolyanions According to Mass Spectrometry Data and Activity in Oxidation of Sulfur-Containing Substrates

• Published in: Russian Journal of Physical Chemistry A Vol. 98; no. 12; pp. 2727 - 2734
• Main Authors: Tarkhanova, I. G., Minenkova, I. V., Gorbunov, V. S., Zelikman, V. M., Krasovskii, V. G., Maslakov, K. I., Buryak, A. K.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2024; Springer Nature B.V
• Subjects: Catalysis; Catalysts; Chemical Kinetics and Catalysis; Chemical synthesis; Chemistry; Chemistry and Materials Science; Comparative studies; Composite materials; Data analysis; Desulfurizing; Heteropoly anions; Mass spectrometry; Oxidation; Photoelectrons; Physical Chemistry; X ray photoelectron spectroscopy; SILP (Supported Ionic Liquid Phase); mass spectrometry; oxidation of sulfur-containing compounds; heterogeneous catalysis; hydrogen peroxide
• ISSN: 0036-0244; 1531-863X
• DOI: 10.1134/S0036024424701954

A comparative study of composites based on imidazolium phosphomolybdates of the SILP type of catalysts for peroxide oxidative desulfurization was performed by mass spectrometry and other physicochemical methods, in particular, XPS (X-ray photoelectron spectroscopy). An analysis of the data obtained revealed partial destruction of heteropolyanions during the synthesis of heterogeneous samples. The results of mass spectrometric measurements are well correlated with the XPS data, indicating the possibility of using mass spectrometry (MS) in the surface-activated laser desorption/ionization (SALDI) technique for characterization of these composites. The results of the analysis of the desulfurization rate showed the important role of the products of partial destruction of heteropolyacid anions in the catalysis of the process.