催化阻抗光谱学：二氧化碳甲烷化的概念和应用。

IF 4.8 2区化学 Q2 CHEMISTRY, PHYSICAL

The Journal of Physical Chemistry Letters Pub Date : 2024-10-11 DOI:10.1021/acs.jpclett.4c02442

Andreas Borgschulte, Marco Achermann, Marin Nikolic

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引用次数: 0

摘要

周期性激励与时间分辨产物检测相结合的复杂模型用于描述催化系统的复杂响应函数。我们介绍了催化阻抗光谱（CIS）的概念、基本的一般实验方法和具体设置。我们通过二氧化碳甲烷化催化反应实验证明了 CIS 的可行性。测量结果证实了镍催化剂上 HCO* → CH* 的理论预期速率决定步骤。讨论了 CIS 在揭示反应机理方面的局限性和前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Catalytic Impedance Spectroscopy: Concept and Application on CO2 Methanation.

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Catalytic Impedance Spectroscopy: Concept and Application on CO₂ Methanation.

Complex modeling of periodic excitation combined with time-resolved product detection is used to describe the complex response function of a catalytic system. We describe this concept of catalytic impedance spectroscopy (CIS) and the underlying general experimental approach and a concrete setup. The feasibility of CIS is experimentally demonstrated along the catalytic CO₂ methanation reaction. The measurements confirm the theoretically anticipated rate-determining step of HCO* → CH* on Ni catalysts. Limitations and prospects of CIS to unravel reaction mechanisms are discussed.

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来源期刊

The Journal of Physical Chemistry Letters CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

9.60

自引率

7.00%

发文量

1519

审稿时长

1.6 months

期刊介绍： The Journal of Physical Chemistry (JPC) Letters is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, chemical physicists, physicists, material scientists, and engineers. An important criterion for acceptance is that the paper reports a significant scientific advance and/or physical insight such that rapid publication is essential. Two issues of JPC Letters are published each month.