Scholarlink

<p>A novel mesoporous magnesium tungstate (MgWO<sub>4</sub>) catalyst with a yarn ball-like morphology using cetyltrimethylammonium bromide (CTAB) as a structure-directing agent was pioneered the design and successfully prepared via a solvothermal method in this work, and the catalytic performance was subsequently investigated in the Baeyer-Villiger (B-V) oxidation of cyclohexanone to ε-caprolactone within an O<sub>2</sub>/benzaldehyde co-oxidation system. The physicochemical and structural properties of MgWO<sub>4</sub> were thoroughly characterized using a suite of analytical techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Nitrogen adsorption-desorption isotherms, X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FT-IR), Inductively coupled plasma (ICP) and Hammett indicator methods. The engineered pore structure can enhance oxygen adsorption capacity to promote the oxidation of cyclohexanone and alleviate mass transfer constraints. The Y-MgWO<sub>4</sub>(22%) catalyst, exhibiting a 1.9-fold increase in specific surface area, a 3.1-fold larger pore volume, and moderate basicity, achieved catalytic activity approximately 179% higher than the CTAB-free MgWO<sub>4</sub> substrate. The catalyst maintained stable performance over more than eight reuse cycles, indicating its viability for industrial application.</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

Mesoporous yarn ball-like MgWO4 for cyclohexanone B-V oxidation to ε-Caprolactone

  • 期刊论文

  • 发表日期：

    2025年11月19日

查看全文
  • Ke Chen,
  • Jun Zhang,
  • Dongxiang Shi,
  • Zhiwei Zhou,
  • Hui Xie,
  • Wenliang Wu

摘要

A novel mesoporous magnesium tungstate (MgWO4) catalyst with a yarn ball-like morphology using cetyltrimethylammonium bromide (CTAB) as a structure-directing agent was pioneered the design and successfully prepared via a solvothermal method in this work, and the catalytic performance was subsequently investigated in the Baeyer-Villiger (B-V) oxidation of cyclohexanone to ε-caprolactone within an O2/benzaldehyde co-oxidation system. The physicochemical and structural properties of MgWO4 were thoroughly characterized using a suite of analytical techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Nitrogen adsorption-desorption isotherms, X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FT-IR), Inductively coupled plasma (ICP) and Hammett indicator methods. The engineered pore structure can enhance oxygen adsorption capacity to promote the oxidation of cyclohexanone and alleviate mass transfer constraints. The Y-MgWO4(22%) catalyst, exhibiting a 1.9-fold increase in specific surface area, a 3.1-fold larger pore volume, and moderate basicity, achieved catalytic activity approximately 179% higher than the CTAB-free MgWO4 substrate. The catalyst maintained stable performance over more than eight reuse cycles, indicating its viability for industrial application.