Support properties in applied to the formation of sulfur dioxide oxidation catalysts

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Authors

Olga Kovalenko¹ , Irina Simentsova¹ , Evgeniy Paukshtis¹

1. Boreskov Institute of Catalysis, Novosibirsk, Russia

Conference / event

8th Asian Symposium on Advanced Materials (ASAM-8), July 2023 (Novosibirsk, Russian Federation)

Poster summary

In the work has been shown that on modifying of diatomite proceeds in specific adsorption of V2O5 on the base centers of impurity oxides of Al, Ti, and Fe. As a result, the diatomite surface is positively charged: a) according to IR spectroscopy, the basic sites disappear, and the strength of the acid sites increases; b) the point of zero charge decreases: 7.85 →3.97. The activity of the catalyst on the modified diatomite by 15% exceeds the activity of the catalyst on the initial diatomite. Thus, it can be assumed that modification with vanadium contributes to the uniform distribution of the melt of the active component on the support and leads to a decrease in the ignition temperature of the catalyst.

Keywords

Acid-base surface properties, Diatomite, Adsorption of V2O5

Research areas

Chemistry

References

1. N.V. Spiridonova, B.M. Maslennikov et.al. Proceedings of NIUIF, M., 1977, V.230, С.19-22
2. S.A. Lavrishcheva, L.A. Nefedova et.al. Chem. Chem. Tech., 2005, V.48, 1, C.105-109
3. F. Cavalca, P. Beato et.al. J. Phys. Chem. C, 2017, V.121, 6, C.3350–3364

Funding

No data provided

Supplemental files

No data provided

Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

Creative Commons license

Copyright © 2023 Kovalenko et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.