The Role of / IR Spectroscopy in Unraveling Adsorbate-Induced Structural Changes in Heterogeneous Catalysis
Overview
Affiliations
Heterogeneous catalysts undergo thermal- and/or adsorbate-induced dynamic changes under reaction conditions, which consequently modify their catalytic behavior. Hence, it is increasingly crucial to characterize the properties of a catalyst under reaction conditions through the so-called "" approach. IR spectroscopy is probably one of the most ubiquitous and versatile characterization methods in the field of heterogeneous catalysis, but its potential in identifying adsorbate- and thermal-induced phenomena is often overlooked in favor of other less accessible methods, such as XAS spectroscopy and high-resolution microscopy. Without detracting from these techniques, and while aware of the enormous value of a multitechnique approach, the purpose of this Review is to show that IR spectroscopy can provide relevant information in this field. This is done by discussing a few selected case studies from our own research experience, which belong to the categories of both "single-site"- and nanoparticle-based catalysts.
Propane wet reforming over PtSn nanoparticles on γ-AlO for acetone synthesis.
Ma X, Yin H, Pu Z, Zhang X, Hu S, Zhou T Nat Commun. 2024; 15(1):8470.
PMID: 39349499 PMC: 11443076. DOI: 10.1038/s41467-024-52702-x.
Dynamic Active Sites in Electrocatalysis.
Ning M, Wang S, Wan J, Xi Z, Chen Q, Sun Y Angew Chem Int Ed Engl. 2024; 63(50):e202415794.
PMID: 39291302 PMC: 11610695. DOI: 10.1002/anie.202415794.
Improving sensitivity of XANES structural fit to the bridged metal-metal coordination.
Abrosimov S, Protsenko B, Mannaa A, Vlasenko V, Guda S, Pankin I J Synchrotron Radiat. 2024; 31(Pt 3):447-455.
PMID: 38530834 PMC: 11075727. DOI: 10.1107/S1600577524002091.