Machine learning on big data for future computing

The Journal of Supercomputing -     

Absorption of carbon dioxide into glycidyl methacrylate solution with quaternary onium salts

Carbon dioxide was absorbed into organic solutions of glycidyl methacrylate (GMA) in a semi-batch stirred tank with a plane gas-liquid interface at 101.3 kPa to measure absorption rates of carbon dioxide, from which the reaction kinetics between carbon dioxide and GMA with quaternary onium salts as catalysts was obtained. The reaction rate constants were estimated by the mass transfer mechanism accompanied by the pseudo-first-order reaction method. An empirical correlation formula between the reaction rate constants and the solubility parameters of solvents such as toluene, N-methyl-2-pirrolidinone, and dimethyl sulfoxide was presented.     

Amphiphilic polythiophene for the formation of gold nanowire networks

Polythiophene containing amphiphilic decyl-tri(oxyethylene) side group was synthesized. Gold nanowire networks having almost uniform wire diameters could be prepared when the amphiphilic polythiophene was mixed with hydrogen tetrachloroaurate (HAuCl₄) in THF followed by the addition of aqueous sodium borohydride solution. The size of nanowire networks and the diameter of the component wires could be controlled by changing the polymer concentration and the gold salt to polymer ratios. When polythiophene derivatives having hydrophobic or hydrophilic side groups were used instead of the amphiphilic polythiophene, disconnected poor networks and coagulated nanoparticle chunks, respectively, were obtained, although the same reduction process was applied.     

Absorption of carbon dioxide into glycidyl methacrylate solution containing the triethylamine immobilized ionic liquid on MCM-41 catalyst

An ionic liquid (TEA-MS41), triethylamine-immobilized on chloropropyl-functionalized MCM-41, was synthesized by a grafting technique through a co-condensation method and used as a catalyst in the reaction of carbon dioxide with glycidyl methacrylate (GMA). CO₂ was absorbed into the heterogeneous system of the GMA solution and dispersed with solid particles of the catalyst in a batch stirred tank with a plane gas-liquid interface at 101.3 kPa. The absorption of CO₂ was analyzed by using mass transfer accompanied by chemical reactions based on film theory. The proposed model fits the measured data of the enhancement factor to obtain the reaction rate constants. Solvents such as N,N-dimethylacetamide, N-methyl-2-pyrrolidinone, and dimethyl sulfoxide influenced the reaction rate constants.