设计双联催化剂和级催化系统,用于CO2升级
Wanzhen Zheng1, Xiaoxuan Yang1, Zhongjian Li1
1Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
Angewandte Chemie (International ed. in English)
|June 20, 2023
概括
通过二氧化碳还原反应 (CO2 RR) 探索将二氧化碳 (CO2) 升级为有价值的多碳化学物质. 协奏式和级联式催化剂通过优化中间吸附来实现高效的C2+生产.
科学领域:
- 电化学和催化剂的应用
- 碳捕获和利用 (CCU) 是指碳的捕获和利用.
- 材料科学 材料科学 材料科学
背景情况:
- 减轻大气中的二氧化碳 (CO2) 需要有效地转化为有价值的化学物质.
- 对多碳 (C2+) 化合物的二氧化碳还原反应 (CO2 RR) 涉及复杂的质子合电子转移 (PCET) 和C-C合.
- 单组分催化剂由于竞争性吸附关键中间体 (*H_ad和*CO) 而面临限制,阻碍了C2+的选择性.
研究的目的:
- 为二氧化碳RR到C2+产品提供双联催化剂设计原则的全面概述.
- 讨论级二氧化碳RR催化系统的进展,将二氧化碳减排与下游催化整合起来.
- 突出开发高效二氧化碳升级技术的挑战和未来前景.
主要方法:
- 在CO2 RR中对C2+生产的反应途径的审查.
- 分析双重催化剂策略,以提高*H_ad和*CO表面覆盖率.
- 检查连锁二氧化碳RR系统,整合二氧化碳减排和随后的化学转化.
主要成果:
- 双联催化剂通过优化通过辅助站点的中间吸附来提高C2+的产量.
- 级联系统通过将二氧化碳RR与下游催化技术相结合,扩大了二氧化碳升级产品的范围.
- 克服中间吸附挑战对于高效的C2+选择性至关重要.
结论:
- 串联和级联催化剂设计是推动二氧化碳升级的有希望的策略.
- 需要进一步的研究来解决催化剂稳定性,选择性和可扩展性的挑战.
- 优化反应动力学和中间管理是释放二氧化碳RR潜力的关键.
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