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Preparation and characterization of Ni-doped titanates nanotubes for hydrogen storage
신기주,박수진 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
In this study, we developed a hydrogen storage adsorbent based on Ni-doped titanate (Ni-TNT). Titanate nanotubes (TNT) and Ni-TNT were synthesized by hydrothermal method and mechanical mix using rutile powders as starting materials. The hydrogen absorption capacity was measured by BEL-HP at 77K and 100 bar. From the results, Ni increases the amount of adsorption of hydrogen result from a chemical bond. The Ni-TNT exhibited higher hydrogen storage capacity than pristine TNT.
Effects of pore size on adsorption of methane in structural transformation of MCM-41
신기주,박수진 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
We report the adsorption isotherms of pure methane in the mesoporous silica MCM-41. MCM-41 has hexagonal array of parallel pores with approximately constant cross section. And MCM-41 has high-surface-area, so they were applied to adsorbents materials. To investigate methane storage in MCM-41, we were adsorbed methane at high pressure and room temperature. In this study, we have observed that the size of the pore is best methane adsorption in MCM-41. The pore size was controlled to surfactants that have a different length of the alkyl chain surfactants. The pore size distribution has an effect on methane adsorption in MCM-41.
신기주,박수진 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
In this work, the different carbon blacks were added to natural rubber (NB). The influence of type of carbon blacks inthe carbon black/natural rubber (NR) composites on the mechanical properties were investigated. Adsorption and surface properties of carbon black wereexamined using BET isotherms and X-ray diffraction (XRD). Tensile strength and tearing energy (GIIIC) of carbon black/NR composites were measured. As a result, it was found that mechanical properties of carbon black/NR composites were improved by the increase of london dispersive component of surface free energy of the carbon blacks.
Lithium ion battery anode properties of recycling rice husks-graphite composites
신기주,박수진 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Nowadays, Industrialization and economic growth are deriving to a rapidly increase in global energy consumption. This current caused severe environment contamination and depleted fossil resources, so that need to new energy technology. Lithium secondary battery has attracted attention next-generation energy source. Recently Silicon is attracting attention as a lithium secondary battery Anode. Silicon was considerable interest as a high energy density and high theoretical specific capacity (3500~4200 mAh g<sup>-1</sup>). However, because of large volume changes (> 300%) for lithiation-delithiation of silicon while electrochemical progress can bring about pulverization and shatter of silicon anodes, and a rapid decline in capacity. So, in this study, use as an anode material of lithium secondary battery, graphite-silicon composite powders are prepared by ball-milling with silicon nano particles and graphite powder and their electrochemical properties are examined. The graphite-silicon composite anode improved their specific capacity and their life time than silicon based anode.
Graphite composites for high capacity lithium ion battery anode from recycling rice husks
신기주,박수진 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Nowadays, Industrialization and economic growth are deriving to a rapidly increase in global energy consumption. This current caused severe environment contamination and depleted fossil resources, so that need to new energy technology. Lithium secondary battery has attracted attention next-generation energy source. Recently Silicon is attracting attention as a lithium secondary battery Anode. Silicon was considerable interest as a high energy density and high theoretical specific capacity (3500~4200 mAhg-1). However, because of large volume changes (>300%) for lithiation-delithiation of silicon while electrochemical progress can bring about pulverization and shatter of silicon anodes, and a rapid decline in capacity. So, in this study, use as an anode material of lithium secondary battery, graphite-silicon composite powders are prepared by ball-milling with silicon nano particles and graphite powder and their electrochemical properties are examined.
Control of kinetic diameter on methane adsorption in the structural transformation of MCM-41
신기주,박수진 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
We report the adsorption isotherms of pure methane in the mesoporous silica MCM-41. MCM-41 has hexagonal array of parallel pores with approximately constant cross section. And MCM-41 has high-surface-area, so they were applied to adsorbents materials. To investigate methane storage in MCM-41, we were adsorbed methane at high pressure (35 bar) and room temperature. In this study, we have observed that the size of the pore is best methane adsorption. in MCM-41. The pore size was controlled to surfactants that have a different length of the alkyl chain surfactants.
신기주,박수진 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
In this study, we developed a new CO2 adsorbent based on titanate nanotube (TNT) modified with amine groups from polyethylenimine. TNT was prepared by hydrothermal reaction. An investigation of CO2 adsorption by the polyethylenimine-impregnated TNT showed that the CO2 adsorption capacity increased with increasing polyethylenimine content. The CO2 adsorption capacities were measured at 298 K. 15% CO2 adsorption capacities were measured by TGA method. Polyethyleneimine increases the amount of adsorption of CO2 result from a chemical bond. The polyethylenimine-impregnated TNT exhibited higher CO2 adsorption capacity than pristine TNT.
Influence of ozone treatment on interfacial behaviors of carbon blacks/NR compounds
신기주,박수진 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1
In this work, ozone treated carbon blacks were added to natural rubber (NR) to fabricate carbon black/NR composites. The influence of ozone treatment on the mechanical properties of carbon black/NR composites investigated. Adsorption and surface properties of carbon blacks were examined using Brunauer-Emmett-Teller isotherms and x-ray photoelectron spectroscopy. The surface free energy was analyzed by tensiometer. And Ozone treatment results show an increase in the surface free energy of the carbon black. Tensile strength and tearing energy (GIIIC) of ozone treated carbon black/NR composites were also measured. The results showed that the mechanical properties of the ozone treated carbon black/NR composites improved owing to the increase in the surface free energy of the ozone treated carbon black.