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Full-Text Articles in Engineering

Synthesis Of Carbonyl Compounds From Alcohols Using Electrochemically Generated Superoxide Ions In Rtils, Praneshwar Sethupathy, Inas Alnashef, John Monnier, Michael Matthews, John Weidner Sep 2014

Synthesis Of Carbonyl Compounds From Alcohols Using Electrochemically Generated Superoxide Ions In Rtils, Praneshwar Sethupathy, Inas Alnashef, John Monnier, Michael Matthews, John Weidner

Michael A. Matthews

No abstract provided.


Spectroscopic Investigation Into Oxidative Degradation Of Silica-Supported Amine Sorbents For Co2 Capture, Chakravartula Srikanth, Steven Chuang Jul 2014

Spectroscopic Investigation Into Oxidative Degradation Of Silica-Supported Amine Sorbents For Co2 Capture, Chakravartula Srikanth, Steven Chuang

Steven S.C. Chuang

Oxidative degradation characteristics of silica-supported amine sorbents with varying amounts of tetraethylenepentamine (TEPA) and polyethylene glycol (PEG; P200 or P600 represents PEG with molecular weights of 200 or 600) have been studied by IR and NMR spectroscopy. Thermal treatment of the sorbents and liquid TEPA at 100 °C for 12 h changed their color from white to yellow. The CO2 capture capacity of the TEPA/SiO2 sorbents (i.e., SiO2-supported TEPA with a TEPA/SiO2 ratio of 25:75) decreased by more than 60 %. IR and NMR spectroscopy studies showed that the yellow color of the degraded sorbents resulted from the formation of …