scholarly journals Synthesis of H2Ti12O25 containing fine carbon particles by impregnation method using porous titanium hydroxide

2019 ◽  
Vol 127 (6) ◽  
pp. 399-403
Author(s):  
Hideaki NAGAI ◽  
Kunimitsu KATAOKA ◽  
Junji AKIMOTO
Keyword(s):  
Porous Titanium ◽  
Titanium Hydroxide ◽  
Impregnation Method ◽  
Carbon Particles ◽  
Fine Carbon

scholarly journals The Physical and Chemical Properties of Fine Carbon Particles-Pinewood Resin Blends and Their Possible Utilization

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Aviwe Melapi ◽  
Sampson N. Mamphweli ◽  
David M. Katwire ◽  
Edson L. Meyer
Keyword(s):  
Fossil Fuels ◽  
Turbine Blades ◽  
Chemical Properties ◽  
Calorific Value ◽  
Specific Reference ◽  
Wind Turbine Blades ◽  
Carbon Particles ◽  
Gasification Process ◽  
Fine Carbon ◽  
By Products

The application of biomass gasification technology is very important in the sense that it helps to relieve the dwindling supply of natural gas from fossil fuels, and the desired product of its gasification process is syngas. This syngas is a mixture of CO and H2; however, by-products such as char, tar, soot, ash, and condensates are also produced. This study, therefore, investigated selected by-products recovered from the gasification process of pinewood chips with specific reference to their potential application in other areas when used as blends. Three samples of the gasification by-products were obtained from a downdraft biomass gasifier system and were characterized in terms of chemical and physical properties. FTIR analysis confirmed similar spectra in all char-resin blends. For fine carbon particles- (soot-) resin blends, almost the same functional groups as observed in char-resin blends appeared. In bomb calorimeter measurements, 70% resin/30% char blends gave highest calorific value, followed by 50% resin/50% soot blends with values of 35.23 MJ/kg and 34.75 MJ/kg consecutively. Provided these by-products meet certain criteria, they could be used in other areas such as varnishes, water purification, and wind turbine blades.

OPTICAL LIMITING WITH CARBON SUSPENSIONS AT SELECTED WAVELENGTHS AND PULSE LENGTHS

2000 ◽  
Vol 09 (03) ◽  
pp. 243-259 ◽  
Author(s):  
DENIS VINCENT
Keyword(s):  
High Performance ◽  
Damage Threshold ◽  
Single Pulse ◽  
Retinal Damage ◽  
Carbon Particles ◽  
Threshold Data ◽  
Wide Range ◽  
Liquid Suspensions ◽  
Pulse Characteristics ◽  
Fine Carbon

High-performance liquid suspensions of fine carbon particles have been developed at DREV over the last 10 years to fulfil requirements regarding eye protection against laser radiation over a wide range of wavelengths and pulse lengths. This paper reports on the single-pulse characteristics of DREV's best limiting suspension named CBS-100 at wavelengths of 532, 751 and 1064 nm, and at pulse lengths of 0.01, 0.1, 1 and 100 μs. Some results at higher repetition rate (6 pps) and a comparison with recent retinal damage threshold data are included also.

Preparation of ultrafine metal particle-supported fine carbon particles

1996 ◽  
Vol 60 (10) ◽  
pp. 1727-1731 ◽  
Author(s):  
Hisashi Tamai ◽  
Takahiro Sumi ◽  
Fumitaka Nishiyama ◽  
Hajime Yasuda
Keyword(s):  
Metal Particle ◽  
Carbon Particles ◽  
Ultrafine Metal ◽  
Fine Carbon

scholarly journals Micro-Attenuated Total Reflection Spectral Imaging in Archaeology: Application to Maya Paint and Plaster Wall Decorations

2008 ◽  
Vol 62 (1) ◽  
pp. 10-16 ◽  
Author(s):  
Rosemary A. Goodall ◽  
Jay Hall ◽  
Robert J. Sharer ◽  
Loa Traxler ◽  
Llew Rintoul ◽  
...  
Keyword(s):  
High Spatial Resolution ◽  
Total Reflection ◽  
Attenuated Total Reflection ◽  
Array Detector ◽  
Carbon Particles ◽  
Mineral Components ◽  
Ft Ir ◽  
Magnetite Particles ◽  
Fine Carbon ◽  
Individual Particles

Fourier transform infrared (FT-IR) attenuated total reflection (ATR) imaging has been successfully used to identify individual mineral components of ancient Maya paint. The high spatial resolution of a micro FT-IR-ATR system in combination with a focal plane array detector has allowed individual particles in the paint to be resolved and identified from their spectra. This system has been used in combination with micro-Raman spectroscopy to characterize the paint, which was found to be a mixture of hematite and silicate particles with minor amounts of calcite, carbon, and magnetite particles in a sub-micrometer hematite and calcite matrix. The underlying stucco was also investigated and found to be a combination of calcite with fine carbon particles, making a dark sub-ground for the paint.

Generation of microwave plasma under high pressure and fabrication of ultrafine carbon particles

1998 ◽  
Vol 13 (6) ◽  
pp. 1724-1727 ◽  
Author(s):  
H. Yagi ◽  
T. Ide ◽  
H. Toyota ◽  
Y. Mori
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Diffraction Analysis ◽  
Microwave Plasma ◽  
Plasma Generator ◽  
Two Stage ◽  
Carbon Particles ◽  
Helium Gas ◽  
In Series ◽  
Fine Carbon

A microwave plasma generator, which functions under high pressure, has been developed and used in the fabrication of fine carbon particles. The plasma generator is a two-stage-type resonator, which consists of rectangular and semi-cylindrical-type resonators which are coupled in series for torching plasma and keeping it stable under high pressure. The plasma can be torched in helium gas at 3 × 106 Pa by tuning the dimensions of apparatus elements. Fine carbon particles of ~50 nm are obtained using a mixture of helium and methane gas. The particles are found to be crystalline from the results of transparent electron microscopy and diffraction analysis.

Pure ultra-fine carbon particles do not exert pro-coagulation and inflammatory effects on microvascular endothelial cells

2018 ◽  
Vol 26 (1) ◽  
pp. 991-999 ◽  
Author(s):  
Hossein Dinmohammadi ◽  
Zahra Pirdel ◽  
Laleh Salarilak ◽  
Marc Hoylaerts ◽  
Reza Nejatbakhsh ◽  
...  
Keyword(s):  
Endothelial Cells ◽  
Microvascular Endothelial Cells ◽  
Carbon Particles ◽  
Microvascular Endothelial ◽  
Fine Carbon

Preparation of Nanocomposite Particles from Typha angustifolia and Egg Shells

2014 ◽  
Vol 608 ◽  
pp. 68-72 ◽  
Author(s):  
Apiluck Eiad-Ua ◽  
Koonyad Insuang ◽  
Supattra Changsuwan ◽  
Nawin Viriya-Empikul
Keyword(s):  
Electron Microscopy ◽  
Planetary Mill ◽  
Argon Atmosphere ◽  
Typha Angustifolia ◽  
Carbon Particles ◽  
Air Atmosphere ◽  
Egg Shells ◽  
Composite Product ◽  
Fine Carbon ◽  
Scanning Electron

Nanocomposite Paticles have been successfully synthesized from Typha Angustifolia and Egg Shells via 3 steps synthesis; hydrothermal, pyrolysis and/or ball milling techniques, respectively. Typha Angustifolia was subjected to produce fine carbon particles by two stage processes of hydrothermal (at 200 °C for 4 h) and carbonization technique (under Argon atmosphere at 700 °C for 2 h) while the egg shells were convert to white powder (calcium oxide) by calcining under air atmosphere at 900 °C for 4 h. The samples have been characterized by scanning electron microscopy (SEM) and fourier transform infrared spectroscopy (FTIR) to investigate the morphology and surface function, respectively. The experimental results revealed that the planetary mill have effect on the composites between carbon and calcium. Calcium was deposited on the surface of carbon material. Moreover, when the calcium was increased leading to higher performance of milling (i.e. the smaller composite product was observed).

scholarly journals Synthesis of carbon nano-spheres by thermal plasma treatment of polypropylene

2018 ◽  
Author(s):  
Sina Mohsenian
Keyword(s):  
Plasma Treatment ◽  
Waste Disposal ◽  
Thermal Plasma ◽  
Industrial Waste ◽  
Plasma Torch ◽  
Solid Carbon ◽  
Sem Image ◽  
Carbon Particles ◽  
Fine Carbon ◽  
Carbon Peak

In this work, it has been experimentally found the feasibility of producing carbon nano-spheres (CNS) from common plastic waste material (polypropylene), using thermal plasma treatment. Samples were treated in a furnace fitted with a twin dc thermal plasma torch. The EDS pattern for the samples synthesized at 80 A illustrates that there are some kinds of impurities in solid products. However, in the pattern obtained at 100 A, there was just one major carbon peak. The SEM image for 100 A treatment reveals that the solid carbon particles are very fine carbon nano-spheres with about 50 nm diameter. This method for synthesis of carbon nano-spheres may find a way to be considered in industrial waste disposal installation which may enhance the economic efficiency of plasma waste disposal industry, significantly.

scholarly journals Development of an Electrostatic Precipitator with Porous Carbon Electrodes to Collect Carbon Particles

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2805 ◽  
Author(s):  
Yoshihiro Kawada ◽  
Hirotaka Shimizu
Keyword(s):  
Internal Combustion Engines ◽  
Electrostatic Precipitator ◽  
Collection Efficiency ◽  
Engine Fuel ◽  
Low Carbon ◽  
Ceramic Filters ◽  
Carbon Particles ◽  
Experimental Apparatus ◽  
Electrostatic Precipitators ◽  
Fine Carbon

Exhaust gases from internal combustion engines contain fine carbon particles. If a biofuel is used as the engine fuel for low-carbon emission, the exhaust gas still contains numerous carbon particles. For example, the ceramic filters currently used in automobiles with diesel engines trap these carbon particles, which are then burned during the filter regeneration process, thus releasing additional CO2. Electrostatic precipitators are generally suitable to achieve low particle concentrations and large treatment quantities. However, low-resistivity particles, such as carbon particles, cause re-entrainment phenomena in electrostatic precipitators. In this study, we develop an electrostatic precipitator to collect fine carbon particles. Woodceramics were used for the grounded electrode in the precipitator to collect carbon particles on the carbon electrode. Woodceramics are eco-friendly materials, made from sawdust. The electrical resistivity and surface roughness of the woodceramics are varied by the firing temperature in the production process. Woodceramics electrodes feature higher resistivity and roughness as compared to stainless-steel electrodes. We evaluated the influence of woodceramics electrodes on the electric field formed by electrostatic precipitators and calculated the corresponding charge distribution. Furthermore, the particle-collection efficiency of the developed system was evaluated using an experimental apparatus.

Fast liquid-liquid reactions : Rate enhancements by fine carbon particles

1983 ◽  
Vol 38 (5) ◽  
pp. 817-818 ◽  
Author(s):  
B. Janakiraman ◽  
M.M. Sharma
Keyword(s):  
Carbon Particles ◽  
Fine Carbon
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