Scholarlink

<p>A new iron(III) complex was synthesized by anchoring a sarcosine-based mono phenol amine on Fe<sub>3</sub>O<sub>4</sub>. The material was then characterized using TEM, FE-SEM, FT-IR, TGA, VSM, XRD, NH3-TPD, EDS, and elemental analysis. Then, the transesterification process of canola oil was performed with 2.1 wt% catalyst under mild conditions led to the achievement of 98% yield of biodiesel. Furthermore, the reaction under mild conditions and with the aid of 0.21 wt% catalyst loading yielded 91% benzoxazole from 3,5-di-<i>tert</i>-butyl catechol, ammonium acetate, aldehyde in ethanol under oxygen balloon with 91% benzoxazole yield. The structure of the produced biodiesel and benzoxazole was confirmed by <sup>1</sup>H NMR and FT-IR spectroscopy, while the composition of the biodiesel was further analyzed using GC-MS. The hot filtration experiment confirmed the stable heterogeneous nature of the catalyst. The system was able to show good recyclibility for at least 7 and 5 consecutive cycles in the production of biodiesel and benzoxazole, respectively. The kinetics of the benzoxazole formation reaction were investigated using a modeling approach and consequetly, the rate constants and activation parameters, ΔH<sup>≠</sup> and ΔS<sup>≠</sup>, were calculated. The key distinguishing figure of the catalyst was both double active sites and dual activity. Presence of chlorine substituents placed on mono phenol amine ligand and increasing the Lewis acidity of Fe(III) centre, results in consequently, high efficiency, low catalyst loading, mild medium and oxidative conditions for mentioned processes.</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

Sarcosine-anchored Fe3O4-supported iron(III) catalyst for efficient biodiesel and benzoxazole synthesis: kinetic and thermodynamic studies

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月29日

查看全文
  • Fatemeh Gholami,
  • Elham Safaei,
  • Jasem Aboonajmi,
  • S. Maryam Sajjadi,
  • Yong-Ill Lee

摘要

A new iron(III) complex was synthesized by anchoring a sarcosine-based mono phenol amine on Fe3O4. The material was then characterized using TEM, FE-SEM, FT-IR, TGA, VSM, XRD, NH3-TPD, EDS, and elemental analysis. Then, the transesterification process of canola oil was performed with 2.1 wt% catalyst under mild conditions led to the achievement of 98% yield of biodiesel. Furthermore, the reaction under mild conditions and with the aid of 0.21 wt% catalyst loading yielded 91% benzoxazole from 3,5-di-tert-butyl catechol, ammonium acetate, aldehyde in ethanol under oxygen balloon with 91% benzoxazole yield. The structure of the produced biodiesel and benzoxazole was confirmed by 1H NMR and FT-IR spectroscopy, while the composition of the biodiesel was further analyzed using GC-MS. The hot filtration experiment confirmed the stable heterogeneous nature of the catalyst. The system was able to show good recyclibility for at least 7 and 5 consecutive cycles in the production of biodiesel and benzoxazole, respectively. The kinetics of the benzoxazole formation reaction were investigated using a modeling approach and consequetly, the rate constants and activation parameters, ΔH≠ and ΔS≠, were calculated. The key distinguishing figure of the catalyst was both double active sites and dual activity. Presence of chlorine substituents placed on mono phenol amine ligand and increasing the Lewis acidity of Fe(III) centre, results in consequently, high efficiency, low catalyst loading, mild medium and oxidative conditions for mentioned processes.