从甲醇和CO2中用Ceria催化生成二甲基碳酸盐:使用脱水剂与固体催化剂相结合的效果
Dichao Shi1, Svetlana Heyte2, Mickaël Capron2
1School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, China.
Molecules (Basel, Switzerland)
|December 17, 2024
概括
这项研究增强了从二氧化碳和甲醇的二甲基碳酸盐 (DMC) 合成,使用了ceria催化剂和一种新的双催化剂系统. ,1,1,1-trimethoxymethane (TMM) 和13X分子的组合显著增加了DMC产量.
科学领域:
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 从二氧化碳和甲醇直接合成二甲基碳酸盐 (DMC) 是绿色化学的一个关键领域.
- 基于Ceria的催化剂对这种反应有希望,但热力学限制需要有效的脱水剂.
研究的目的:
- 为了研究各种脱水剂 (分子,DMP,DMM,TMM) 与DMC合成的ceria结合的疗效.
- 引入和评估第二个固体共催化剂,以加速TMM水化和改善DMC产量.
- 优化催化剂系统并评估可扩展性.
主要方法:
- 在相同的条件下,用商业质选脱水剂 (DMP,DMM,TMM).
- 引入各种基本氧化物和酸性化物 (例如13X) 作为二次催化剂.
- 使用优化的TMM和13X系统测试三台商用车.
- 在250毫升的自闭柜中进行了扩大规模的研究.
主要成果:
- 1,1,1-trimethoxymethane (TMM) 在测试的脱水剂中显示出最高的效率.
- 不完整的TMM转换需要第二个共催化剂;13X分子被证明是最有效的.
- ,TMM和13X分子的组合产生了高的DMC产量,199.5 mmol/gcat.
结论:
- 使用和13X分子和TMM的双催化系统显著增强了从CO2和甲醇的DMC合成.
- 这种方法克服了TMM转换的局限性,并提高了整体过程效率.
- 优化的系统显示了工业扩展的潜力,实现了高的DMC产量.
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