Decomposition Kinetics of EGDN on ZnO by Diffuse Reflectance Infrared Fourier Transform Spectroscopy

1995 ◽  
Vol 49 (4) ◽  
pp. 444-450 ◽  
Author(s):  
D. O. Henderson ◽  
R. Mu ◽  
Y. S. Tung ◽  
G. C. Huston
Keyword(s):  
Fourier Transform ◽  
Diffuse Reflectance ◽  
Fourier Transform Spectroscopy ◽  
Decomposition Kinetics ◽  
Oxide Surface ◽  
Suitable Material ◽  
Langmuir Kinetics ◽  
Ethylene Glycol Dinitrate ◽  
Diffuse Reflectance Infrared ◽  
Kinetics Of

Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to follow the decomposition kinetics of ethylene glycol dinitrate (EGDN) adsorbed on a zinc oxide surface at 313 K. The principal decomposition products are most likely a variety of carbonyl, carboxylate, and carbonate species. The appearance of these products follows zeroth-order Langmuir kinetics. Another decomposition product, carbon monoxide, exhibited more complex kinetics. Overall, because of its reactivity with EGDN, ZnO does not appear to be a suitable material for an explosive preconcentrator device.

Adsorption Kinetics of EGDN on ZnO by Diffuse Reflectance Infrared Fourier Transform Spectroscopy

1993 ◽  
Vol 47 (4) ◽  
pp. 528-532 ◽  
Author(s):  
D. O. Henderson ◽  
E. Silberman ◽  
N. Chen ◽  
F. W. Snyder
Keyword(s):  
Zinc Oxide ◽  
Fourier Transform ◽  
Adsorption Kinetics ◽  
Diffuse Reflectance ◽  
Fourier Transform Spectroscopy ◽  
Nonlinear Curve Fitting ◽  
Stretching Vibration ◽  
Diffuse Reflectance Infrared ◽  
Kinetics Of ◽  
Dose Dependent

Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to follow the adsorption kinetics of ethyleneglycol dinitrate (EGDN) on zinc oxide as a function of dosing time. Inhomogeneous broadening of the NO2 antisymmetric stretching vibration was found to be dose dependent. Through nonlinear curve-fitting techniques, the sum of three component bands was found to reproduce the inhomogeneously broadened envelope and was attributed to two different types of adsorbed EGDN corresponding to on-end and bridged sites on a zinc rich surface of zinc oxide. The adsorbed EGDN species were characterized by their line-shape parameters and adsorption kinetics.

ANALYTICAL APPLICATIONS OF DIFFUSE REFLECTANCE INFRARED FOURIER TRANSFORM SPECTROSCOPY

1982 ◽  
pp. 299-309 ◽  
Author(s):  
Peter R. Griffiths ◽  
S. Agyare Yeboah ◽  
Issam M. Hamadeh ◽  
Pamela J. Duff ◽  
Wang-Jih Yang ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Diffuse Reflectance ◽  
Fourier Transform Spectroscopy ◽  
Analytical Applications ◽  
Diffuse Reflectance Infrared

scholarly journals Development of a diffuse reflectance infrared fourier transform spectroscopy (DRIFTS) cell for the in situ analysis of co-electrolysis in a solid oxide cell

2015 ◽  
Vol 182 ◽  
pp. 97-111 ◽  
Author(s):  
Denis J. Cumming ◽  
Christopher Tumilson ◽  
S. F. Rebecca Taylor ◽  
Sarayute Chansai ◽  
Ann V. Call ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Diffuse Reflectance ◽  
Fourier Transform Spectroscopy ◽  
Transport Processes ◽  
Solid Oxide ◽  
Electrochemical Measurements ◽  
Ex Situ ◽  
Diffuse Reflectance Infrared ◽  
Solid Oxide Cell

Co-electrolysis of carbon dioxide and steam has been shown to be an efficient way to produce syngas, however further optimisation requires detailed understanding of the complex reactions, transport processes and degradation mechanisms occurring in the solid oxide cell (SOC) during operation. Whilst electrochemical measurements are currently conducted in situ, many analytical techniques can only be used ex situ and may even be destructive to the cell (e.g. SEM imaging of the microstructure). In order to fully understand and characterise co-electrolysis, in situ monitoring of the reactants, products and SOC is necessary. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) is ideal for in situ monitoring of co-electrolysis as both gaseous and adsorbed CO and CO2 species can be detected, however it has previously not been used for this purpose. The challenges of designing an experimental rig which allows optical access alongside electrochemical measurements at high temperature and operates in a dual atmosphere are discussed. The rig developed has thus far been used for symmetric cell testing at temperatures from 450 °C to 600 °C. Under a CO atmosphere, significant changes in spectra were observed even over a simple Au|10Sc1CeSZ|Au SOC. The changes relate to a combination of CO oxidation, the water gas shift reaction, carbonate formation and decomposition processes, with the dominant process being both potential and temperature dependent.

Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) study of ethyne hydrogenation on Pd/Al2O3

2007 ◽  
Vol 128 (1-2) ◽  
pp. 52-62 ◽  
Author(s):  
J. Wood ◽  
M.J. Alldrick ◽  
J.M. Winterbottom ◽  
E.H. Stitt ◽  
S. Bailey
Keyword(s):  
Fourier Transform ◽  
Diffuse Reflectance ◽  
Fourier Transform Spectroscopy ◽  
Diffuse Reflectance Infrared
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