Scholarlink

<p>The catalysts MgF<sub>2</sub> supported ZnO (0; 2.5; 5; 7.5; 10 and 15% <i>w</i>/<i>w</i>) were synthesized by sol-gel method. The structure of the catalysts were characterized by XRD. The acidity of the catalyst determined by pyridine-FTIR method showed that 7.5% ZnO/MgF<sub>2</sub> had the highest acidity. The surface area of the ZnO/MgF<sub>2</sub> was measured by N<sub>2</sub> adsorption-desorption method. The surface area of the ZnO/MgF<sub>2</sub> catalysts decrease with the increase in Zn content. The measurement S<sub>BET</sub> of the catalysts was in range of 5.31 to 9.44 m<sup>2</sup>/g. The morphology of the catalyst was observed by Scanning Electron Microscope (SEM). The synthesized catalysts performance was tested in phenol acylation and were determined by High Performance Liquid Chromatography (HPLC), which the main products were <i>p</i>-HAP (hydroxyacetophenone) and PA (phenyl acetate). The formation of <i>p</i>-HAP was influenced by the Lewis acid site, while PA was influenced by the Brønsted acid site. The highest conversion was achieved 85.36% by 7.5% ZnO/MgF<sub>2</sub>, while the yields of the <i>p</i>-HAP and PA were 56.06 and 23.40% respectively.</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

Synthesis and characterization of pure ZnO and ZnO supported MgF2 for catalytic acylation of phenol

  • 期刊论文

  • 发表日期：

    2026年2月16日

查看全文
  • Ika Fitri Ulfindrayani,
  • Irmina Kris Murwani,
  • Eko Sri Kunarti,
  • Afifah Rosyidah,
  • Harsasi Setyawati,
  • Qurrota A’yuni,
  • Abdul Wafi,
  • Eka Cahya Muliawati

摘要

The catalysts MgF2 supported ZnO (0; 2.5; 5; 7.5; 10 and 15% w/w) were synthesized by sol-gel method. The structure of the catalysts were characterized by XRD. The acidity of the catalyst determined by pyridine-FTIR method showed that 7.5% ZnO/MgF2 had the highest acidity. The surface area of the ZnO/MgF2 was measured by N2 adsorption-desorption method. The surface area of the ZnO/MgF2 catalysts decrease with the increase in Zn content. The measurement SBET of the catalysts was in range of 5.31 to 9.44 m2/g. The morphology of the catalyst was observed by Scanning Electron Microscope (SEM). The synthesized catalysts performance was tested in phenol acylation and were determined by High Performance Liquid Chromatography (HPLC), which the main products were p-HAP (hydroxyacetophenone) and PA (phenyl acetate). The formation of p-HAP was influenced by the Lewis acid site, while PA was influenced by the Brønsted acid site. The highest conversion was achieved 85.36% by 7.5% ZnO/MgF2, while the yields of the p-HAP and PA were 56.06 and 23.40% respectively.