Study of ZrO2/SiO2 catalyst and hydrocarbons obtained from n-propyl alcohol using it by chromatographic and thermogravimetric methods
Year: 2025
Type: article
Abstract: This study investigates the thermal desorption of n-propyl alcohol adsorbed on a ZrO₂/SiO₂ nano-structured oxide-based catalyst within the 120-550°C temperature range.The released gas phase was analyzed using chromatographic techniques, and the active sites on the catalyst surface were examined to understand their role in hydrocarbon formation.The physicochemical properties of the ZrO₂/SiO₂ catalyst were characterized before and after adsorption using thermal analysis, X-ray diffractometry, X-ray fluorescence microscopy, dynamic light scattering (DLS), and infrared spectroscopy.Elemental composition was determined by scanning a 10 µm diameter area at five different points, allowing for the quantification of SiO₂ and ZrO₂ oxides and their distribution on the catalyst surface.DLS analysis revealed significant changes in particle size distribution, suggesting structural modifications due to thermal desorption.Gas chromatography confirmed that at 120°C, propylene yield was 100%, but its output decreased as the temperature increased.Above 200°C, the formation of various C₁-C₆ hydrocarbons was observed, indicating secondary conversion reactions.Additionally, X-ray phase curves, infrared spectra, and thermograms provided further insights into structural transformations in the catalyst.These findings contribute to a deeper understanding of the catalyst's active sites, reaction mechanisms, and efficiency in alcohol-to-hydrocarbon conversion, offering valuable insights for catalytic applications in hydrocarbon synthesis
Source: PPOR
Authors: Nushaba M. Aliyeva, Farid E. Mamedov, Ulviyya A. Karimova, Afina A. Aliyeva, Fidan M. Hasanova, Gunel N. Hamzayeva
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4411091059