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选择性电催化氧化到酸使用甲酸

Ashadul Adalder¹, Sourav Paul¹, Biswajit Ghorai¹

¹Department of Industrial Chemistry & Applied Chemistry, Swami Vivekananda Research Centre, Ramakrishna Mission Vidyamandira, Belur Math, Howrah 711202, India.

ACS applied materials & interfaces

|July 14, 2023

概括

本研究介绍了一种可持续的单步电化学方法,用于在环境条件下使用甲 (MnPc) 催化剂从二氧化 (N2OR) 产生酸,为传统工业工艺提供环保的替代方案.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
可持续化学可持续化学

背景情况:

哈伯-博什和奥斯特瓦尔德生产氨和酸的工艺是非常能源密集的.
需要可持续和环保的工业化工合成方法.
单阶段电催化技术为更绿色的化学生产提供了一个有希望的替代方案.

研究的目的:

开发一种可持续的,单阶段的电化学方法来生产酸.
为了研究甲酸 (MnPc) 空洞纳米结构作为二氧化反应 (N2OR) 的电催化剂的有效性.
探索N2OR作为酸的环保途径的潜力.

主要方法:

通过N2OR的10电子通路对酸进行电化学合成.
作为电催化剂,利用了甲酸 (MnPc) 空洞纳米结构.
使用扩展的X射线吸收细结构 (EXAFS) 和密度函数理论 (DFT) 计算进行表征.

主要成果:

实现了513.2μmolh-1gcat-1的酸产量,在2.1V和RHE时具有33.9%的法拉第效率.
证明了极好的催化剂选择性,稳定性和可回收性.
EXAFS证实了Mn-N4协调,DFT计算确定了Mn-N4位点作为抑制氧气演变的活跃中心.

结论:

甲酸 (MnPc) 空洞纳米结构使得高效的单阶段电化学N2OR转化为酸.
Mn-N4活性位点对于高性能和选择性至关重要,为酸生产提供了可持续的途径.
这项工作通过先进的电催化工艺为碳中和社会铺平了道路.

关键词:

这是奥斯特沃尔德工艺.绿色合成是一种绿色合成.酸 (Manganese) 是一种酸 (phthalocyanine) 的化合物.亚酸是一种酸.氧化氧化的氧化作用

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