In situ characterization by Raman and IR vibrational spectroscopies on a single instrument: DeNOxreaction over a Pd/γ-Al2O3catalyst

Bourdon, G. Le; Adar, Fran; Moreau, Myriam; Morel, Sophie; Reffner, John A.; Mamede, Anne-Sophie; Dujardin, Christophe; Payen, Edmond

doi:10.1039/b306045b

Cited by 36 publications

(19 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the last decade many attempts have been made to combine multiple spectroscopic techniques into one setup to perform correlative spectroscopy on the same catalyst material under identical conditions without the need for sample transfer. [87] This approach has lead to the development of different combined in situ setups, such as XRD / XAFS, [88] ESR / UV/ Vis, [89] Raman / UV/Vis, [90] NMR / UV/Vis, [91] Raman / IR, [92] XAFS / IR, [93] IR / UV/Vis, [94] XAFS / Raman / UV/Vis, [95] ESR / UV/Vis / Raman, [96] and XAFS / SAXS / WAXS / UV/ Vis / Raman (XAFS = X-ray absorption fine structure, SAXS = small-angle X-ray scattering, WAXS = wide-angle X-ray scattering). [97] Besides gathering complementary structural, electronic, and kinetic information on a catalytic process, these methods also allow evaluation of the reliability of the measurements by cross-checking two or more sets of spectroscopic data.…”

Section: Development Of Correlative Microscopy Approachesmentioning

confidence: 99%

Chemical Imaging of Spatial Heterogeneities in Catalytic Solids at Different Length and Time Scales

2009

View full text Add to dashboard Cite

Knowledge of spatiotemporal gradients in heterogeneous catalysts is of paramount importance for the rational design of new and more sustainable catalytic processes. Heterogeneities resulting in space- and time-dependent phenomena occur at different length scales; that is, at the level of catalytic reactors (mm to m), catalyst bodies (microm to mm), catalyst grains (nm to microm), and active sites and metal (oxide) particles (A to nm). This Review documents the recent advances in the development of space- and time-resolved spectroscopic methods for imaging spatial heterogeneities within catalytic processes at these four length scales. Particular emphasis will be on the use of magnetic resonance, optical, and synchrotron-based methods, their capabilities in providing spatial resolution (1D and 2D imaging) and depth profiling (3D imaging) as well as on their time-resolved application, potential for single-molecule and nanoparticle detection, and use under reaction conditions. The Review ends with future prospects on spectroscopic markers for catalytic activity, label-free spectroscopy, tomography at the nanoscale, and correlative microscopic approaches.

show abstract

Section: Development Of Correlative Microscopy Approachesmentioning

confidence: 99%

Chemical Imaging of Spatial Heterogeneities in Catalytic Solids at Different Length and Time Scales

2009

View full text Add to dashboard Cite

show abstract

“…The combination of Raman and infrared spectroscopies is particularly convenient for supported oxides 37 , since Raman spectroscopy reports essentially the structure of the supported phase while IR has more sensitivity to adsorbed species. Payen et al 38 performed alternate in situ characterization by Raman and IR of Pd based catalysts for DeNOx using a commercial Raman spectrometer with an IR extension (Horiba Jobin Yvon). Zhang et al [39][40] designed a homemade high-throughput reactor that combines FTIR and Raman spectroscopies.…”

Section: Introductionmentioning

confidence: 99%

Operando Reactor-Cell with Simultaneous Transmission FTIR and Raman Characterization (IRRaman) for the Study of Gas-Phase Reactions with Solid Catalysts

et al. 2020

View full text Add to dashboard Cite

Raman and transmission FTIR spectroscopic techniques have been coupled in a new homemade reactor-cell designed in a joint CSIC-UNICAEN collaboration. The set-up is easily adapted to any FTIR and fibre-coupled Raman spectrometers and gas analysis techniques. Simultaneous operando FTIR and Raman spectroscopic measurement allow complementary characterization of adsorbed species, reaction intermediates, and structural properties of the catalyst. This system was validated with the study of vanadium based catalysts during propane OxyDeHydrogenation (ODH). The combined use of both spectroscopies with gas analysis techniques to measure the activity contributes to the understanding of propane ODH and the identification of the role of different oxygen species bound to vanadium sites. For example, the simultaneous characterization of the catalyst under the same conditions by IR and Raman confirms that the V=O mode has the same frequency in both spectroscopies, and that bridging oxygen sites (V-O-V, V-O-Zr) present higher activity than terminal V=O bonds. These results demonstrate the high potential of the new simultaneous transmission IR-Raman operando rig to correlate the activity and the structure of catalysts, thus assisting the rational design of catalytic processes.

show abstract

“…Operando Raman spectroscopy was firstly developed by Bañares group of CSIC (Instituto de Catálisis y Petroleoquímica, Madrid) and closely followed by French teams . All these groups work actively to the development of reactor‐cells for getting closer to industrial reaction conditions, as well as to the development of cells and equipment for the coupling of techniques as IR‐thermogravimetry, IR‐Raman and Raman‐UV‐RPE . The achievement of IR operando cells that can reach temperature up to 1073 K and pressure up to 4 MPa or can allow analysis of catalyst in its industrial form (as deposited on monolith) leads to a development of the applications fields.…”

Section: Figurementioning

confidence: 99%

The Pivotal Role of Catalysis in France: Selected Examples of Recent Advances and Future Prospects.

et al. 2017

View full text Add to dashboard Cite

show abstract

In situ characterization by Raman and IR vibrational spectroscopies on a single instrument: DeNO_xreaction over a Pd/γ-Al₂O₃catalyst

Cited by 36 publications

References 9 publications

Chemical Imaging of Spatial Heterogeneities in Catalytic Solids at Different Length and Time Scales

Chemical Imaging of Spatial Heterogeneities in Catalytic Solids at Different Length and Time Scales

Operando Reactor-Cell with Simultaneous Transmission FTIR and Raman Characterization (IRRaman) for the Study of Gas-Phase Reactions with Solid Catalysts

The Pivotal Role of Catalysis in France: Selected Examples of Recent Advances and Future Prospects.

Contact Info

Product

Resources

About