Scholarlink

<p>The conversion of carbon dioxide (CO<sub>2</sub>) into high-value chemicals is crucial for mitigating greenhouse emissions and achieving sustainable carbon cycles. This study presented a series of Zr-doped MOF-derived Mn<sub>2</sub>O<sub>3</sub> catalysts (xZr-MnBP), synthesized via an aqueous solution process using trimesic acid and polyvinylpyrrolidone as ligands, followed by zirconium incorporation. The catalysts were thoroughly characterized by XRD, TG, TEM, CO<sub>2</sub>/NH<sub>3</sub>-TPD, FTIR, and XPS and applied in the synthesis of ethylene urea (EU) from CO<sub>2</sub> and ethylenediamine (EDA). Among them, the 10Zr-MnBP catalyst, with 10&#xa0;wt% Zr doping, demonstrated superior performance with 93% conversion of EDA and 75% selectivity of EU under mild conditions (60&#xa0;℃, 1&#xa0;min). Characterization indicated that optimal Zr doping promoted surface oxygen vacancies, increased Mn<sup>3+</sup> species, and balanced acid–base sites, which synergistically enhanced CO<sub>2</sub> adsorption and activation. Kinetic studies further confirmed a lower activation energy consistent with the improved activity. Moreover, 10Zr-MnBP demonstrated excellent stability over five reaction cycles with negligible efficiency decay. This work offers an effective Mn-based catalyst for CO<sub>2</sub> valorization and provides insights into designing efficient systems for sustainable chemical synthesis.</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

MOF-derived Zr-doped Mn2O3 as a high-performance catalyst for CO2 conversion to ethylene urea

  • 期刊论文

  • 发表日期：

    2026年3月22日

查看全文
  • Fei Wang,
  • Junxi Tang,
  • Shun Huang,
  • Yupeng Gao,
  • Jun Yin,
  • Yiwen Chen,
  • Guocheng Deng,
  • Jie Xu,
  • Bing Xue

摘要

The conversion of carbon dioxide (CO2) into high-value chemicals is crucial for mitigating greenhouse emissions and achieving sustainable carbon cycles. This study presented a series of Zr-doped MOF-derived Mn2O3 catalysts (xZr-MnBP), synthesized via an aqueous solution process using trimesic acid and polyvinylpyrrolidone as ligands, followed by zirconium incorporation. The catalysts were thoroughly characterized by XRD, TG, TEM, CO2/NH3-TPD, FTIR, and XPS and applied in the synthesis of ethylene urea (EU) from CO2 and ethylenediamine (EDA). Among them, the 10Zr-MnBP catalyst, with 10 wt% Zr doping, demonstrated superior performance with 93% conversion of EDA and 75% selectivity of EU under mild conditions (60 ℃, 1 min). Characterization indicated that optimal Zr doping promoted surface oxygen vacancies, increased Mn3+ species, and balanced acid–base sites, which synergistically enhanced CO2 adsorption and activation. Kinetic studies further confirmed a lower activation energy consistent with the improved activity. Moreover, 10Zr-MnBP demonstrated excellent stability over five reaction cycles with negligible efficiency decay. This work offers an effective Mn-based catalyst for CO2 valorization and provides insights into designing efficient systems for sustainable chemical synthesis.