Total Oxidation of Oxytetracycline in a Heterogeneous Fenton System Based on Micro- and Nanocrystals of Fe-Silicalite-1

IF 1.1 4区工程技术 Q3 CHEMISTRY, ORGANIC

Petroleum Chemistry Pub Date : 2025-07-23 DOI:10.1134/S096554412560095X

A. A. Bragina, R. D. Konurin, D. A. Selezneva, K. A. Babina, E. V. Parkhomchuk

引用次数: 0

Abstract

Two types of Fe-silicalite-1 catalysts were synthesized: microcrystals (4–6 μm, via hydrothermal treatment) and nanocrystals (20–50 nm, via steam-assisted crystallization). It was demonstrated that oxytetracycline adsorbed on the external crystal surface, and the experimental Langmuir approximation agreed with the theoretical data based on crystal geometry. Although both catalysts exhibited equal activities in H₂O₂ decomposition, the nanocrystalline Fe-silicalite-1 achieved a higher degree of mineralization due to its different textural properties. Moreover, the nanocrystalline sample provided an H₂O₂ utilization efficiency approximately 90% higher than that of the microcrystalline sample.

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基于fe -硅石-1微纳米晶的非均相Fenton体系中土霉素的全氧化

制备了两种Fe-silicalite-1催化剂：微晶（4-6 μm，水热处理）和纳米晶（20-50 nm，蒸汽辅助结晶）。结果表明，土霉素在晶体表面吸附，实验Langmuir近似与基于晶体几何的理论数据吻合。尽管两种催化剂在H2O2分解中表现出相同的活性，但纳米晶fe -silica -1由于其不同的结构性质而获得了更高的矿化程度。此外，纳米晶样品的H2O2利用率比微晶样品高约90%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.