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<p>Dimethyl carbonate is a building block in modern chemical synthesis and battery industry. The catalytic transesterification of ethylene carbonate and methanol is a sustainable route for the clean synthesis of dimethyl carbonate. In order to improve the catalytic activity of Nb<sub>2</sub>O<sub>5</sub> materials, a one-pot decomposition-induced preparation approach for high-surface-area Nb<sub>2</sub>O<sub>5</sub> was developed. By incorporation of dicyandiamide and adjustment of calcination temperatures, Nb<sub>2</sub>O<sub>5</sub> materials with various surface areas (47–143 m<sup>2</sup>·g<sup>− 1</sup>) were prepared. Compared with the traditional decomposition method, the synthesized Nb<sub>2</sub>O<sub>5</sub>-CN materials possessed larger surface areas and higher quantities of acidic sites. As heterogeneous catalysts, the Nb<sub>2</sub>O<sub>5</sub>-CN materials demonstrated high activity in the transesterification of EC to DMC. Under the reaction conditions of 140&#xa0;°C and 4&#xa0;h, the conversion of EC and the selectivity of DMC reached up to 63.6% and 100%, respectively.</p> Graphical abstract <p></p>

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Decomposition-Induced Preparation of High-Surface-Area Nb2O5 Materials for Catalytic Transesterification of Ethylene Carbonate to Dimethyl Carbonate

  • 期刊论文

  • 发表日期：

    2025年6月25日

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  • Xiao-Yan Wang,
  • Ya-Jing Wang,
  • Lin-Zhi Yu,
  • Fei Wang,
  • Jie Xu,
  • Bing Xue

摘要

Dimethyl carbonate is a building block in modern chemical synthesis and battery industry. The catalytic transesterification of ethylene carbonate and methanol is a sustainable route for the clean synthesis of dimethyl carbonate. In order to improve the catalytic activity of Nb2O5 materials, a one-pot decomposition-induced preparation approach for high-surface-area Nb2O5 was developed. By incorporation of dicyandiamide and adjustment of calcination temperatures, Nb2O5 materials with various surface areas (47–143 m2·g− 1) were prepared. Compared with the traditional decomposition method, the synthesized Nb2O5-CN materials possessed larger surface areas and higher quantities of acidic sites. As heterogeneous catalysts, the Nb2O5-CN materials demonstrated high activity in the transesterification of EC to DMC. Under the reaction conditions of 140 °C and 4 h, the conversion of EC and the selectivity of DMC reached up to 63.6% and 100%, respectively.

Graphical abstract