Dynamics of CO in Mesoporous Silica Monitored by Time-Resolved Step-Scan and Rapid-Scan FT-IR Spectroscopy

2006 ◽  
Vol 110 (45) ◽  
pp. 22601-22607 ◽  
Author(s):  
Lars Klembt Andersen ◽  
Heinz Frei
Keyword(s):  
Ir Spectroscopy ◽  
Mesoporous Silica ◽  
Time Resolved ◽  
Rapid Scan ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Applications of Time-Resolved Step-Scan and Rapid-Scan FT-IR Spectroscopy: Dynamics from Ten Seconds to Ten Nanoseconds

1993 ◽  
Vol 47 (9) ◽  
pp. 1376-1381 ◽  
Author(s):  
T. J. Johnson ◽  
A. Simon ◽  
J. M. Weil ◽  
G. W. Harris
Keyword(s):  
Fourier Transform ◽  
Ir Spectroscopy ◽  
Time Resolved ◽  
Time Resolved Spectroscopy ◽  
Rapid Scan ◽  
Scan Time ◽  
Ft Ir ◽  
Complementary Nature ◽  
New Applications ◽  
Ft Ir Spectroscopy

The step-scan technique in Fourier transform infrared (FT-IR) spectroscopy is employed in new applications of time resolved spectroscopy (TRS). Results are demonstrated on time-resolved laser emissions and photolytically generated chemical reactions using both emission and absorption modes. New achievements in FT-IR temporal resolution are demonstrated, as well as the complementary nature of step-scan and rapid-scan time-resolved spectroscopy.

scholarly journals Gas-Phase Photodissociation of CH3CHBrCOCl at 248 nm: Detection of Molecular Fragments by Time-Resolved FT-IR Spectroscopy

ChemPhysChem ◽  
2010 ◽  
Vol 12 (1) ◽  
pp. 206-216 ◽  
Author(s):  
Chia-Yun Liu ◽  
Ming-Tsang Tsai ◽  
Po-Yu Tsai ◽  
Yu-Ting Liu ◽  
Si Ying Chen ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Gas Phase ◽  
Molecular Fragments ◽  
Time Resolved ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

scholarly journals Ultrafast time-resolved quantum cascade laser diagnostic for revealing the role of surface formate species in the photocatalytic oxidation of methanol

2020 ◽  
Vol 10 (16) ◽  
pp. 5618-5627 ◽  
Author(s):  
Josefine Schnee ◽  
Marco Daturi ◽  
Mohamad El-Roz
Keyword(s):  
Ir Spectroscopy ◽  
Photocatalytic Oxidation ◽  
Time Resolved ◽  
Quantum Cascade ◽  
Oxidation Of Methanol ◽  
Laser Diagnostic ◽  
Surface Formate ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

QCL-assisted operando FT-IR spectroscopy revealed the role of surface formate species in the photocatalytic oxidation of methanol over TiO2.

T-Jump/FT-IR Spectroscopy: A New Entry into the Rapid, Isothermal Pyrolysis Chemistry of Solids and Liquids

1992 ◽  
Vol 46 (6) ◽  
pp. 900-911 ◽  
Author(s):  
T. B. Brill ◽  
P. J. Brush ◽  
K. J. James ◽  
J. E. Shepherd ◽  
K. J. Pfeiffer
Keyword(s):  
Thin Film ◽  
Ir Spectroscopy ◽  
Bulk Material ◽  
Control Unit ◽  
Control Voltage ◽  
Near Surface ◽  
Rapid Scan ◽  
Gas Products ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

The interface of a Pt filament pyrolysis control unit and a rapid-scan FT-IR spectrometer is described that enables the thermal decomposition of a thin film of material to be studied isothermally after heating at 2000°C/s. A model of the heat transfer of the Pt filament as a function of gas atmosphere and pressure is developed to help understand the instrument response. The control voltage of the Pt filament is highly sensitive to the thermochemistry of the thin film of sample. By simultaneously recording the control voltage and the rapid-scan IR spectra of the near-surface gas products, one learns considerable detail about chemical mechanisms relevant to combustion of a bulk material. The application of T-jump/FT-IR spectroscopy is illustrated with rapid thermolysis data for the energetic organoazide polymers azidomethyl-methyloxetane (AMMO), bis(azidomethyl)oxetane (BAMO), and glycidylazide polymer (GAP); the cyclic nitramine, octahydro-1,3,5,7-tetranitro-1,3,5,7-tetraazacine (HMX); and the nitroaromatic 1,3,5-triamino-2,4,6-trinitrobenzene (TATB).

Structural discrimination of nanosilica particles and mixed-structure silica by multivariate analysis applied to SAXS profiles in combination with FT-IR spectroscopy

RSC Advances ◽  
2016 ◽  
Vol 6 (76) ◽  
pp. 72306-72316 ◽  
Author(s):  
Y. P. Ruiz ◽  
M. F. Ferrão ◽  
M. B. Cardoso ◽  
E. A. Moncada ◽  
J. H. Z. dos Santos
Keyword(s):  
Multivariate Analysis ◽  
Ir Spectroscopy ◽  
Mesoporous Silica ◽  
Multivariate Analyses ◽  
Mixed Structure ◽  
Silica Materials ◽  
Ft Ir ◽  
Mesoporous Silica Materials ◽  
Nanosilica Particles ◽  
Ft Ir Spectroscopy

New methodology to quickly identify changes in the structural properties of mesoporous silica materials through simultaneous multivariate analyses applied to techniques with different principles as SAXS curves and FT-IR spectra.

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