(二) 酸替代剂调节电催化CO2转化为甲醇的过程
Mariam Barakat1, Emmanuel Adu Fosu1, Elena Jakubikova1
1Department of Chemistry, North Carolina State University, 2620 Yarbrough Dr., Raleigh, North Carolina 27695, United States.
提取电子的组增强了甲酸催化剂,以有效地将二氧化碳减少为甲醇. 电子捐赠小组倾向于竞争的进化,强调选择性二氧化碳转换的电子调整.
科学领域:
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
- 计算化学计算化学
背景情况:
- 甲酸 (Co(II) Pc) 是减少二氧化碳的有希望的电催化剂.
- 对于对Co ((II) Pc催化作用的配体替代剂作用的理解是有限的.
研究的目的:
- 调查电子捐赠组 (EDG) 和电子吸收组 (EWG) 如何影响Co(II) Pc电子结构和氧化还原特性.
- 解二氧化碳还原反应 (CO2RR) 机制.
主要方法:
- 密度函数理论 (DFT) 的计算.
- 系统地调查EDG和EWG对Co的影响
- 对CO2RR机械路径的分析.
主要成果:
- 电工组将减排潜力转向正面,有利于二氧化碳的结合和甲醇的形成.
- EDG将潜力负面转移,促进进化反应 (HER).
- 二氧化碳分离是不利的;氧化还原潜力与二氧化碳分离能量是甲醇选择性的关键.
结论:
- 干替代剂对CO2RR的电催化剂性能进行了批判性的调整.
- 工业组促进选择性甲醇生产,而电气组则赞成 HER.
- DFT提供了一个用于设计高效分子电催化剂的预测框架,用于二氧化碳转化.
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