Cu(II)(2-aza-5,10,15,20-tetraphenyl-21-carbaporphyrin(2-)) | 320411-19-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: Cu(II)(2-aza-5,10,15,20-tetraphenyl-21-carbaporphyrin(2-))
• CAS: 320411-19-6
• 化学式: C₄₄H₂₈CuN₄
• 分子量: 676.279
• InChiKey: IQHPHKFDXALYFJ-RPJCWBNKSA-N

反应信息

• 作为产物：
  描述：

  苯甲醛 在 甲烷磺酸 作用下， 以 二氯甲烷 为溶剂， 反应 2.18h， 生成 Cu(II)(2-aza-5,10,15,20-tetraphenyl-21-carbaporphyrin(2-))
  参考文献：
  名称：

  用于氧还原反应的明确 N3C1 锚定单金属位点

  摘要：

  研究了明确分子中 N 3 C 1锚定的单金属位点，以解决碳材料的结构-性能相关性研究挑战。建立的火山图和实验催化结果为电化学催化的不对称单金属活性位点的基本理解提供了可能性。

  DOI：

  10.1002/anie.202314833

文献信息

• Pulse Electrolysis Turns on CO2 Methanation through N‐Confused Cupric Porphyrin
  作者：Wei Hua、Tingting Liu、Zhangyi Zheng、Huihong Yuan、Long Xiao、Kun Feng、Jingshu Hui、Zhao Deng、Mutian Ma、Jian Cheng、Daqi Song、Fenglei Lyu、Jun Zhong、Yang Peng

  DOI：10.1002/anie.202315922

  日期：2024.3.18

  Breaking the D4h symmetry in the square‐planar M−N4 configuration of macrocycle molecular catalysts has witnessed enhanced electrocatalytic activity, but at the expense of electrochemical stability. Herein, we hypothesize that the lability of the active Cu−N3 motifs in the N‐confused copper (II) tetraphenylporphyrin (CuNCP) could be overcome by applying pulsed potential electrolysis (PPE) during electrocatalytic carbon dioxide reduction. We find that applying PPE can indeed enhance the CH4 selectivity on CuNCP by 3 folds to reach the partial current density of 170 mA cm−2 at >60 % Faradaic efficiency (FE) in flow cell. However, combined ex situ X‐ray diffraction (XRD), transmission electron microscope (TEM), and in situ X‐ray absorption spectroscopy (XAS), infrared (IR), Raman, scanning electrochemical microscopy (SECM) characterizations reveal that, in a prolonged time scale, the decomplexation of CuNCP is unavoidable, and the promoted water dissociation under high anodic bias with lowered pH and enriched protons facilitates successive hydrogenation of *CO on the irreversibly reduced Cu nanoparticles, leading to the improved CH4 selectivity. As a key note, this study signifies the adaption of electrolytic protocol to the catalyst structure for tailoring local chemical environment towards efficient CO2 reduction.