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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 …


Mechanism And Kinetics Of Oxidation Of 2,4,6-Trichlorophenol By Fenton's Reagent, Somnath Basu, Irvine Wei Nov 2010

Mechanism And Kinetics Of Oxidation Of 2,4,6-Trichlorophenol By Fenton's Reagent, Somnath Basu, Irvine Wei

Irvine W. Wei

Fenton's reagent is an effective oxidant for pretreatment and toxicity reduction in wastewater contaminated with 2,4,6-trichlorophenol (TCP). The reaction, and its dependence on various parameters (e.g., molar ratios of the reacting chemicals, pH, temperature, etc.) have been reported elsewhere. In this paper a mechanistic interpretation of the reaction pathway, with identity of the intermediate reaction products, has been presented. An empirical expression for the rate of reaction has also been proposed in terms of the disappearance of TCP in water, as a function of the concentrations of the TCP itself and of the oxidant, hydrogen peroxide.