Scholarlink

<p>The effective transformation of CO<sub>2</sub> sources is one of the potential strategies to promote carbon neutrality strategic goals. A series of efficient Zr<sub><i>x</i></sub>-CeO<sub>2</sub> catalysts with high surface oxygen vacancies and tunable acid-basic sites for direct synthesis of dialkyl carbonate (DAC) have been prepared by using xanthan gum (XG) as a template through the hydrothermal method, and were further characterized with SEM, XRD, NH<sub>3</sub>-TPD, CO<sub>2</sub>-TPD, XPS, and N<sub>2</sub> adsorption-desorption. The effect of Zr-doping on the crystal structure, oxygen vacancies, and acid-basic sites was investigated in detail, and their catalytic performances were further evaluated with direct synthesis DAC through the reaction between CO<sub>2</sub> and alcohol, in which multiple carbonates can be simultaneously synthesized in one pot. A possible synergistic catalytic mechanism was proposed. The obtained conclusions and discoveries provide a new insight and reference for related research.</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

Defect-rich porous CeO2-based materials with adjustable acid-base properties for direct synthesis of carbonates from CO2 and alcohol

  • 期刊论文

  • 发表日期：

    2025年10月15日

查看全文
  • Wei Dong,
  • Bin Hua,
  • Xingzhuang Ren,
  • Nannan Liang,
  • Aizhong jia

摘要

The effective transformation of CO2 sources is one of the potential strategies to promote carbon neutrality strategic goals. A series of efficient Zrx-CeO2 catalysts with high surface oxygen vacancies and tunable acid-basic sites for direct synthesis of dialkyl carbonate (DAC) have been prepared by using xanthan gum (XG) as a template through the hydrothermal method, and were further characterized with SEM, XRD, NH3-TPD, CO2-TPD, XPS, and N2 adsorption-desorption. The effect of Zr-doping on the crystal structure, oxygen vacancies, and acid-basic sites was investigated in detail, and their catalytic performances were further evaluated with direct synthesis DAC through the reaction between CO2 and alcohol, in which multiple carbonates can be simultaneously synthesized in one pot. A possible synergistic catalytic mechanism was proposed. The obtained conclusions and discoveries provide a new insight and reference for related research.