scholarly journals Ozonation of Decalin as a Model Saturated Cyclic Molecule: A Spectroscopic Study

Molecules ◽  
2021 ◽  
Vol 26 (18) ◽  
pp. 5565
Author(s):  
Boris G. Ershov ◽  
Nadezhda M. Panich ◽  
Gennadii L. Bykov ◽  
Alexander L. Kustov ◽  
Vladimir G. Krasovskiy ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Reaction Mechanism ◽  
Ir Spectroscopy ◽  
Heavy Oil ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Reaction Products ◽  
Cyclic Molecules ◽  
Uv Visible ◽  
Cyclic Molecule

Ozonolysis is used for oxidation of a model cyclic molecule-decalin, which may be considered as an analog of saturated cyclic molecules present in heavy oil. The conversion of decalin exceeds 50% with the highest yield of formation of acids about 15–17%. Carboxylic acids, ketones/aldehydes, and alcohols are produced as intermediate products. The methods of UV-visible, transmission IR, attenuated total reflection IR-spectroscopy, NMR and mass-spectrometry were used to identify reaction products and unravel a possible reaction mechanism. The key stage of the process is undoubtedly the activation of the first C-H bond and the formation of peroxide radicals.

In situ attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy combined with non-negative matrix factorization for investigating the synthesis reaction mechanism of 3-amino-4-amino-oxime furazan

2018 ◽  
Vol 10 (48) ◽  
pp. 5817-5822 ◽  
Author(s):  
Tianlong Zhang ◽  
Ting He ◽  
Chunhua Yan ◽  
Xinyu Gao ◽  
Junxiu Ma ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Reaction Mechanism ◽  
Ftir Spectroscopy ◽  
Matrix Factorization ◽  
Fourier Transform Infrared ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Synthesis Reaction ◽  
Non Negative Matrix Factorization

In situ ATR-FTIR combined with non-negative matrix factorization for investigating the synthesis reaction mechanism of 3-amino-4-aminoximefurazan.

Degradation of MEH-PPV due to Oxygen/Moisture Traps through C-V Analysis and Attenuated Total Reflection IR Spectroscopy

2004 ◽  
Vol 814 ◽  
Author(s):  
R. K. Khillan ◽  
Y. Su ◽  
K. Varahramyan
Keyword(s):  
Ir Spectroscopy ◽  
Negative Ions ◽  
Optical Microscope ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Weak Inversion ◽  
Inversion Region ◽  
Optical Images ◽  
Strong Inversion ◽  
Capacitance Voltage

AbstractWe present the studying of oxygen and moisture traps in MEH-PPV through the MIS Capacitance – Voltage (C-V) analysis, and the Attenuated Total Reflection Infrared (ATR IR) spectroscopy technique. The presence of oxygen studied by ATR IR has also been verified by optical images from high resolution optical microscope. In quasi-static C-V measurements of the MIS (Al/MEH-PPV/p-Si) capacitors made, an extension of the weak inversion region was measured before strong inversion, which becomes more pronounced with aging. This increase in the weak inversion region is attributed to electron trapping by oxygen to form negative ions in the MEH-PPV layer. ATR IR spectroscopy shows the formation of carbonyl peak at 1651 cm−1 with aging, which is due to the presence of oxygen. Both the C-V analysis and Attenuated Total Reflection IR Spectroscopy are powerful tools for investigating the degradation of MEH-PPV polymer.

scholarly journals Attenuated total reflection infrared (ATR–IR) spectroscopy of antigorite, chrysotile, and lizardite

2020 ◽  
Vol 115 (4) ◽  
pp. 303-312
Author(s):  
Ilona SAKAGUCHI ◽  
Yui KOUKETSU ◽  
Katsuyoshi MICHIBAYASHI ◽  
Simon R. WALLIS
Keyword(s):  
Ir Spectroscopy ◽  
Total Reflection ◽  
Attenuated Total Reflection
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