A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Behavior of dimethyl ether on the stainless steel surface: in situ high-temperature infrared Fourier-transform spectroscopy
Abstract The behavior of dimethyl ether (DME) on the surface of a plate made of 12Kh18N10T steel has been investigated using in situ diffuse reflectance infrared Fourier-spectroscopy (DRIFTS) in a high-temperature cell coupled with an IR Fourier spectrometer under flow conditions. The spectra have been recorded in the temperature range of 25–350°C. Dimethyl ether is adsorbed on the steel surface, as can be judged from the absorption bands at 2980, 2837, 1460, 1175, 1117, and 940 cm–1. The interaction of the molecule of adsorbed DME with the metal is accompanied by the migration of a hydrogen atom to the metal to form metal–hydride bonds characterized by bands at 2040 and 2100 cm–1. Along with strongly adsorbed DME, its decomposition products are observed. The spectra exhibit a number of bands that suggest the presence of DME degradation products, such as carboxylic acids, carboxylate ions, and aldehydes, on the surface. The intensity of the bands due to adsorbed DME and metal–hydride bonds decreases with an increase in temperature, whereas while that of the bands due to the surface carboxylate species increases.
Behavior of dimethyl ether on the stainless steel surface: in situ high-temperature infrared Fourier-transform spectroscopy
Abstract The behavior of dimethyl ether (DME) on the surface of a plate made of 12Kh18N10T steel has been investigated using in situ diffuse reflectance infrared Fourier-spectroscopy (DRIFTS) in a high-temperature cell coupled with an IR Fourier spectrometer under flow conditions. The spectra have been recorded in the temperature range of 25–350°C. Dimethyl ether is adsorbed on the steel surface, as can be judged from the absorption bands at 2980, 2837, 1460, 1175, 1117, and 940 cm–1. The interaction of the molecule of adsorbed DME with the metal is accompanied by the migration of a hydrogen atom to the metal to form metal–hydride bonds characterized by bands at 2040 and 2100 cm–1. Along with strongly adsorbed DME, its decomposition products are observed. The spectra exhibit a number of bands that suggest the presence of DME degradation products, such as carboxylic acids, carboxylate ions, and aldehydes, on the surface. The intensity of the bands due to adsorbed DME and metal–hydride bonds decreases with an increase in temperature, whereas while that of the bands due to the surface carboxylate species increases.
Behavior of dimethyl ether on the stainless steel surface: in situ high-temperature infrared Fourier-transform spectroscopy
Bondarenko, G. N. (author) / Rodionov, A. S. (author) / Volnina, E. A. (author) / Kipnis, M. A. (author) / Khadzhiev, S. N. (author)
Petroleum Chemistry ; 55 ; 663-666
2015-11-01
4 pages
Article (Journal)
Electronic Resource
English
Fourier Transform Infrared Spectroscopy of Surfaces
| Springer Verlag | 1992
In-Situ Fourier Transform Infrared Spectroscopy as a Probe of the Electrode/Electrolyte Interface
| British Library Online Contents | 1999
Fourier Transform Infrared and Raman Spectroscopy of Ancient Paper
| British Library Conference Proceedings | 1994