Scholarlink

<p>Herein, a novel ZnFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>@n-pr@xanthine-Pr nanoparticle was successfully synthesized as a green catalyst, which contains the xanthine-Pr catalytic moiety on the surface of silica-coated zinc ferrite as the catalyst support. Then, ZnFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>@n-pr@xanthine-Pr were characterized by some physicochemical techniques such as Fourier-transformed infrared spectroscopy, X-ray powder diffraction, inductively coupled plasma, energy-dispersive X-ray spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis, and vibrating sample magnetometry (VSM). SEM patterns of ZnFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>@n-pr@xanthine-Pr show that the particle’s size is in nanometer dimensions. The preparation of 1H-tetrazole derivatives and oxidation of sulfides were efficiently performed through the catalytic performance of ZnFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>@n-pr@xanthine-Pr. The VSM analysis of the catalyst exhibits that it is recoverable by an external magnet; therefore, it can be reused several continuous times with negligible loss of catalytic properties or praseodymium leaching. Also, the catalytic reactions proceed in high turnover number and turnover frequency numbers, which proves high activity and selectivity in all catalytic experiments. The chemical and thermal stability as well as the heterogeneous nature of the catalyst was confirmed by a hot filtration experiment.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

ZnFe2O4@SiO2@n-pr@xanthine-Pr: as a highly versatile catalyst for the preparation of 1H-tetrazoles and sulfoxidation reaction

  • 期刊论文

  • 发表日期：

    2025年3月19日

查看全文
  • Hamid Aghavandi,
  • Arash Ghorbani-Choghamarani,
  • Amir Ghanbarpour

摘要

Herein, a novel ZnFe2O4@SiO2@n-pr@xanthine-Pr nanoparticle was successfully synthesized as a green catalyst, which contains the xanthine-Pr catalytic moiety on the surface of silica-coated zinc ferrite as the catalyst support. Then, ZnFe2O4@SiO2@n-pr@xanthine-Pr were characterized by some physicochemical techniques such as Fourier-transformed infrared spectroscopy, X-ray powder diffraction, inductively coupled plasma, energy-dispersive X-ray spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis, and vibrating sample magnetometry (VSM). SEM patterns of ZnFe2O4@SiO2@n-pr@xanthine-Pr show that the particle’s size is in nanometer dimensions. The preparation of 1H-tetrazole derivatives and oxidation of sulfides were efficiently performed through the catalytic performance of ZnFe2O4@SiO2@n-pr@xanthine-Pr. The VSM analysis of the catalyst exhibits that it is recoverable by an external magnet; therefore, it can be reused several continuous times with negligible loss of catalytic properties or praseodymium leaching. Also, the catalytic reactions proceed in high turnover number and turnover frequency numbers, which proves high activity and selectivity in all catalytic experiments. The chemical and thermal stability as well as the heterogeneous nature of the catalyst was confirmed by a hot filtration experiment.