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Article
Effects of Nucleating Agent on the Thermal Conductivity and Creep Strain Behavior of Rigid Polyurethane Foams Blown by an Environment-Friendly Foaming Agent
The effects of liquid-type additive, methoxynonafluorobutane, on the morphology, thermal conductivity, creep strain, and mechanical strength of polyurethane (PU) foams with an environment-friendly foaming agen...
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Article
PPE/Nylon 66 Blends with High Mechanical Toughness and Flame Retardancy
Poly(2,6-dimethyl-1,4-phenylene ether) (PPE)/Nylon 66 blends have been considered as the potential heat resistant engineering plastics with high mechanical toughness and flame retardancy, suitable for high tem...
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Article
Vanadia-modified Sb–CeO2/TiO2 catalyst for effective removal of NO by NH3
The Sb–CeO2/TiO2 (SCT) catalytic system with different vanadia loading (0–3 % w/w) was systematically investigated for removal of NO by NH3. A series of catalysts prepared by impregnation and deposition precipita...
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Article
Surface modification of poly(ethylene-2,6-naphthalate) using NH3 plasma
We have performed NH3 plasma treatment of poly(ethylene-2,6-naphthalate) (PEN) surfaces with the purpose of incorporating nitrogen functional groups. X-Ray photoelectron spectroscopy (XPS) and time-of-flight seco...
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Article
Enhanced Activity of Ceria Loaded Sb-V2O5/TiO2 Catalysts for NO Reduction with Ammonia
The effect of Ce-loading over Sb-V2O5/TiO2 catalysts was investigated for the removal of NOx by NH3. In order to understand the influence of Ce-loading over Sb-V2O5/TiO2, NH3-temperature programmed desorption, H2
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Article
Production from ilmenite of TiO2-supported catalysts for selective catalytic reduction of NO with NH3
Economic production of titanium dioxide (yield >98 %) from ilmenite has been achieved by use of a modified sulfate reduction process. A series of samples were prepared by varying the concentration of titanium ...
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Article
Efficient immobilization technique for enhancement of cellobiose dehydrogenase activity on silica gel
In this study, cellobiose dehydrogenase (CDH) of Phanerochaete chrysosporium ATCC 32629 was immobilized on silica gel for the further application of CDH in the saccharification process of biomass. To prevent the ...
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Article
Enhanced production of cellobiose dehydrogenase and β-glucosidase by Phanerochaete chrysosporium
The production of cellobiose dehydrogenase (CDH) and β-glucosidase by Phanerochaete chrysosporium ATCC 32629 was assessed during submerged fermentation. The maximum concentrations of CDH and β-glucosidase were ob...
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Article
Effects of organic acid catalysts on the hydrogen generation from NaBH4
Sodium borohydride has received much attention from fuel cell developers due to its high hydrogen storage capacity. In this study, organic acid solutions such as malic, citric, acetic acids were successfully u...
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Article
Production of cellulosic ethanol in Saccharomyces cerevisiae heterologous expressing Clostridium thermocellum endoglucanase and Saccharomycopsis fibuligera β-glucosidase genes
Heterologous secretory expression of endoglucanase E (Clostridium thermocellum) and β-glucosidase 1 (Saccharomycopsis fibuligera) was achieved in Saccharomyces cerevisiae fermentation cultures as an α-mating fact...
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Article
Taylor dispersion coefficients for longitudinal laminar flow in shell-and-tube exchangers
The problem of determining the shell-side Taylor dispersion coefficient for a shell-and-tube configuration is examined in detail for square and hexagonal arrays of tubes for the case when the shell side flow i...
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Article
Micromixer as a continuous flow reactor for the synthesis of a pharmaceutical intermediate
A mixing device composed of a micron scale flow channel was applied as a continuous reactor to control exothermic reaction heat and to increase the product yield, in a synthesis of a pharmaceutical intermediat...
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Article
Influence of process parameters on ethylene-norbornene copolymers made by using [2,2′-methylenebis(1,3-dimethylcyclopentadienyl)]-zirconium dichloride and MAO
Ethylene-norbornene copolymerization was investigated by using metallocene catalysts, [2,2′-methylenebis( 1,3-dimethylcyclopentadienyl)]zirconium dichloride(2,2′-CH2 (1,3-Me2Cp)2ZrCl2, Catalyst A) and racemicethy...
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Article
Operating strategies and optimum feed tray locations of the fractionation unit of BTX plants for energy conservation
Operating strategies and optimum feed tray locations were studied in a typical fractionation process of a BTX plant in Korea in order to reduce energy consumption. Control systems with fixed V/F or R/F ratios ...
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Article
Heat transfer effect of inert gas on multi-tubular reactor for partial oxidation reaction
The heat transfer effect of an inert gas on a multi-tubular reactor for a partial oxidation reaction has been determined. The model reaction system in the study was partial oxidation of propylene to acrolein. ...
