Catalytic Impedance Spectroscopy: Concept and Application on CO2 Methanation

被引：1

作者：

Borgschulte, Andreas ^{[2
,3
]}

Achermann, Marco ^{[1
]}

Nikolic, Marin ^{[2
,3
]}

机构：

[1] Kantonsschule Reussbuhl Luzern, Dept Dermatol & Allergol, CH-6015 Luzern, Switzerland

[2] Empa Swiss Fed Labs Mat Sci & Technol, Lab Chem Energy Carriers & Vehicle Syst Lab, CH-8600 Dubendorf, Switzerland

[3] Zurich Univ, Dept Chem, CH-8057 Zurich, Switzerland

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2024年 / 15卷 / 42期

关键词：

CARBON-DIOXIDE; MECHANISMS; DIFFUSION; KINETICS;

D O I：

10.1021/acs.jpclett.4c02442

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：10451 / 10456

页数：6

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