ADSORPTION STUDIES ON A SERIES OF HEAT TREATED SHAWINIGAN ACETYLENE CARBON BLACKS

1957 ◽  
Vol 35 (12) ◽  
pp. 1542-1554 ◽  
Author(s):  
J. M. Holmes ◽  
R. A. Beebe
Keyword(s):  
Heat Treatment ◽  
Carbon Black ◽  
Low Oxygen ◽  
Carbon Blacks ◽  
Heat Treated ◽  
Treated Carbon ◽  
Derivatives Of ◽  
Graphitic Material ◽  
Acetylene Carbon ◽  
Acetylene Carbon Black

An experimental study has been made of the adsorption of a nitrogen, sulphur dioxide, carbon dioxide, and ammonia on Shawinigan acetylene carbon black and several derivatives of this material produced by heat treatment up to temperatures of 3000°. The effect of the heat treatment of the Shawinigan carbon black on its adsorption of the polar and non-polar gases studied is compared with the behavior of other heat treated carbon blacks. In particular, the effect of the low oxygen content of the Shawinigan black is considered. The isosteric heats of adsorption for ammonia on the most highly graphitized material (Shawinigan 3000) have been calculated. The results are in general agreement with previous calorimetric work of this laboratory. A special type of hysteresis for the system ammonia – Shawinigan black has been observed. This may be due to a reversible swelling of the graphitic material.

INVESTIGATION OF THE ELECTROCHEMICAL BEHAVIOR OF HEAT-TREATED CARBON BLACKS AND Pt/C CATALYSTS

2002 ◽  
Vol 09 (03n04) ◽  
pp. 1443-1452 ◽  
Author(s):  
C. D. HUANG ◽  
Z. T. XIONG ◽  
J. Y. LIN ◽  
K. L. TAN
Keyword(s):  
Carbon Black ◽  
Electrochemical Behavior ◽  
Catalyst Support ◽  
Carbon Surface ◽  
Carbon Blacks ◽  
Heat Treated ◽  
Platinum Particles ◽  
Electro Oxidation ◽  
Treated Carbon ◽  
Xps Study

In this paper we report the electrochemical behavior of heat-treated carbon blacks and Pt/C catalysts. Cyclic voltammetry indicates that the heat-treated carbon black as catalyst support does not improve the Pt/C catalyst's activity for methanol oxidation. An XPS study of a Pt-loaded carbon black indicates that the amounts of oxidized platinum and oxygen-functional groups on catalysts are decreased when the platinum particles are deposited on the heat-treated carbon surface. These changes in the surface and crystalline structural properties of carbon materials lead to the catalytic activity change in methanol electro-oxidation.

Carbothermal Reduction Synthesis of Superfined TiC Powders from TiOSO4

2011 ◽  
Vol 415-417 ◽  
pp. 510-513
Author(s):  
Jie Li ◽  
Yi Wu ◽  
Peng Fei Li
Keyword(s):  
Heat Treatment ◽  
Thermal Decomposition ◽  
Liquid Phase ◽  
Carbon Black ◽  
Carbothermal Reduction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Thermal Analyzer ◽  
Acetylene Carbon ◽  
Acetylene Carbon Black

Superfined TiC was successfully synthesized from mixtures of acetylene carbon black and TiSO4 through liquid-phase and subsequent heat treatment at a temperature that was considerably lower than that used in conventional carbonthermal reduction synthesis of TiC. Thermal decomposition of TiSO4, and carbothermal reduction of the mixtures were investigated by using thermogravimetry-differential thermal analyzer and x-ray diffraction analyzer.

Synthesis of SiC Nanowires with Silica Sol and Carbon Black

2011 ◽  
Vol 287-290 ◽  
pp. 449-452
Author(s):  
Yi Wei ◽  
Fu Wang ◽  
Wen Bin Cao
Keyword(s):  
Carbon Black ◽  
Carbothermal Reduction ◽  
Graphite Crucible ◽  
Silica Sol ◽  
Sic Nanowires ◽  
Graphite Plate ◽  
Vs Mechanism ◽  
Acetylene Carbon ◽  
Acetylene Carbon Black ◽  
Sic Particle

Nanometer-sized β-SiC were synthesized by carbothermal reduction of silica sol with acetylene carbon black at 1600 °C for 2h. Three kinds (straight, bamboo-like, branch-like) of SiC nanowires were deposited on the graphite plate, while SiC particle agglomerates and nanowires were formed in the graphite crucible. All the nanowires were formed via VS mechanism through the reaction between gaseous SiO and CO produced from the process of carbothermal reduction.

Structure and Properties of Loaded Rubber Mixtures. X. Alteration of Carbon Black Structures by Heat Treatment

1953 ◽  
Vol 26 (4) ◽  
pp. 821-831 ◽  
Author(s):  
B. A. Dogadkin ◽  
K. Pechkovskaya ◽  
Ts Mil'man
Keyword(s):  
Heat Treatment ◽  
Carbon Black ◽  
Electric Resistivity ◽  
Structure And Properties ◽  
Prolonged Heating ◽  
Carbon Blacks ◽  
Exponential Law ◽  
Carbon Structures ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds

Abstract 1. Raising the temperature of vulcanizates containing carbon black causes changes in the carbon structures, which can be estimated by the value of specific electric resistivity ρ and the index n in the equation: I=cVn, relating the strength of the current I with the voltage V. 2. These changes are nearly independent of the type of rubber and are governed chiefly by the type of carbon black. 3. The change of electric resistivity of vulcanizates with temperature follows an exponential law, and can be expressed by the equation : ρt=ρ0 eαt. 4. The sign of the coefficient α is negative for vulcanizates containing channel carbon black, and positive for those containing nozzle black or lamp black. 5. Heating of vulcanizates (up to 100°) for 30 minutes causes destruction of the nozzle black and lamp black particles, but causes little apparent destruction of channel black structures. 6. Prolonged heating (10 hours or more) at temperatures above 60° C causes destruction of the particles of all the carbon blacks studied. This detruction is more extensive in the case of nozzle and lamp blacks than in the case of channel black. 7. During heat treatment of mixtures containing channel black, it is chiefly the carbon-rubber bonds that are destroyed (the index n decreases); whereas in mixtures containing nozzle, furnace and lamp blacks, it is chiefly the carbon-carbon bonds that are destroyed (the index n increases). 8. The higher the temperature during deformation and relaxation, the greater is the degree of restoration of the carbon structures which are destroyed during deformation. 9. The degree of restoration of the carbon structures under identical conditions of deformation and relaxation of vulcanizates containing nozzle black is greater than that of corresponding vulcanizates containing channel black.

Raman studies of heat-treated carbon blacks

Carbon ◽  
1994 ◽  
Vol 32 (7) ◽  
pp. 1377-1382 ◽  
Author(s):  
Tyler Gruber ◽  
T.Waldek Zerda ◽  
Michel Gerspacher
Keyword(s):  
Carbon Blacks ◽  
Heat Treated ◽  
Treated Carbon

24. A survey of ESR in heat treated carbon blacks

Carbon ◽  
1965 ◽  
Vol 3 (3) ◽  
pp. 330
Author(s):  
G Arnold
Keyword(s):  
Carbon Blacks ◽  
Heat Treated ◽  
Treated Carbon

Evolved Gas Analysis of Heat-Treated Carbon Nanomaterials

2005 ◽  
Vol 885 ◽  
Author(s):  
Yury Shulga ◽  
Vyacheslav M. Martynenko ◽  
R. O. Loutfy ◽  
Alex P. Moravsky
Keyword(s):  
Mass Spectrometry ◽  
Heat Treatment ◽  
Carbon Nanomaterials ◽  
Evolved Gas Analysis ◽  
Gas Analysis ◽  
Evolved Gas ◽  
Chemically Modified ◽  
Heat Treated ◽  
Treated Carbon

ABSTRACTGases evolved on heat-treatment of intact fullerite C60, single-walled (SW) and multi-walled nanotubes (MWNTs) and chemically modified carbon nanomaterials (deuterofullerites C60Dx, hydrogenated SWNTs and fluorinated MWNTs) are studied by mass spectrometry.

scholarly journals Heat Treatment Effect on the Surface Properties of Carbon Cloth Electrode for Microbial Fuel Cell

2021 ◽  
pp. X
Author(s):  
Shih-Hang CHANG ◽  
Yuan-Ting TSAO ◽  
Kuan-Wei TUNG
Keyword(s):  
Heat Treatment ◽  
Surface Properties ◽  
Microbial Fuel Cells ◽  
Large Scale ◽  
Carbon Cloth ◽  
Water Contact ◽  
Angle Measurements ◽  
Heat Treated ◽  
Contact Angle Measurements ◽  
Treated Carbon

In this study, we investigate the effect of heat treatment on the surface properties of carbon cloth electrodes and on the power generation efficiencies of microbial fuel cells (MFCs) configured with the heat-treated carbon cloth electrodes. Water contact angle measurements show that the hydrophobic surfaces of the carbon cloth became super-hydrophilic after heat treatment at a temperature above 500 °C, making it suitable for bacterial propagation. X-ray photoelectron spectrometry revealed that the signal of the C-O functional group of the carbon cloth electrodes increased in intensity after heat treatment. The MFCs configured with heat-treated carbon cloth electrode exhibited high power density of 16.58 mW/m2, whereas that of the untreated MFCs was only 8.86 mW m2. Compared with other chemical modifications, heat treatment does not use any environmentally unsound acidic or toxic solutions during modification and are promising for manufacturing large-scale MFC stacks.

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