Sakti, Apurba ; Clifford, Caroline Elaine ; Lueking, Angela. / Investigating reactive ball milling of anthracite coal. 23rd Annual International Pittsburgh Coal Conference, PCC - Coal-Energy, Environment and Sustainable Development. 2006.(23rd Annual International Pittsburgh Coal Conference, PCC - Coal-Energy, Environment and Sustainable …
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Anthracite–magnesium composites were prepared via reactive ball milling in cyclohexene, leading to up to ∼0.6% hydrogen evolution at atmospheric pressure and temperatures up to 1273 K ...
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Carbon materials have been proven to have a favorable impact on the amelioration of the comprehensive characteristics of MgH 2 hydrogen storage. Herein, A graphene and anthracite co-doping magnesium (hereafter referred to as Mg–C–G) composite was produced using mechanical ball milling to evaluate the influence of co …
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Konik Kırıcı Satın Al. Anthracite Grind Mill Ball Mill - studio-art-danse.fr Ball Mills For Grinding Of Petcoke. coal ball mill for pet coke grinding. ball mills for grinding of petcoke petroleum coke grinding mill factory the key features of a coal grinding plant in a cement are whereas for anthracite hard coal and petcoke the rating of the mill is ball mills psp …
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Nanocrystalline diamond (NCD) was observed after reactive ball milling of anthracite coal with cyclohexene, a high-temperature (1400 °C) thermal anneal, and a 4 M HCl treatment followed by a 10 M NaOH treatment. A crystalline carbon region was also observed when the thermal anneal was omitted. This crystalline region is highly unstable …
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Demineralized Summit (DS) anthracite, DS annealed at 1673 K, and graphite are used to explore the effect of precursor order on structural transformations and H2 evolution that …
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Abstract Reactive ball milling in a cyclohexene solvent significantly increases the oxidative reactivity of an anthracite coal, due to the combined effects of particle size reduction, metal introduction, introduction of volatile matter, and changes in carbon structure.
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The effect of a pretreatment using reactive ball milling and calcination on the graphitizability of an anthracite coal is explored. A thermal anneal of Buck Mountain anthracite at 1400 °C in argon increased the Lc crystallite dimension (from 12 to 20 Å) and led to an increase in the oxidation temperature of the product. Ball milling of the coal …
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Herein, a salt‐assisted mechanical ball‐milling strategy is proposed to disrupt the polycyclic aromatic hydrocarbon structure in anthracite molecules, thereby reducing the microcrystalline ...
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Consequently, in contrast to pristine anthracite-based pyrolytic carbon, which exhibits a Na-storage capacity of 198.4 mAh g −1 with a low initial Coulombic efficiency …
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Here, the authors describe a mechanochemical ball milling method to break carbon–carbon bonds without heating. ... anthracite and hard coal were ground …
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A stirred mill is a kind of ultrafine crushing equipment with a high capacity usage ratio, which is one of the most promising among ultrafine crushing equipments. In this study, ultrafine crushing was conducted in the stirred mill made by Xi'an University of Science and Technology (Fig. 1), with zirconium ball as the grinding medium. The ...
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Herein, a salt-assisted mechanical ball-milling strategy is proposed to disrupt the polycyclic aromatic hydrocarbon structure in anthracite molecules, thereby reducing the microcrystalline regularity of the derived carbon during following pyrolysis process.
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Anthracite–magnesium composites were prepared via reactive ball milling in cyclohexene, leading to up to ∼0.6% hydrogen evolution at atmospheric pressure and temperatures up to 1273 K. Hydrogen evolution, measured with temperature programmed desorption coupled with mass spectroscopy (TPD–MS), is attributed to dehydrogenation …
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Made available by U.S. Department of Energy Office of Scientific and Technical Information ...
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Reactive ball milling in a cyclohexene solvent significantly increases the oxidative reactivity of an anthracite coal, due to the combined effects of particle size reduction, metal introduction, introduction of volatile matter, and changes in carbon structure. Metals introduced during milling can be easily removed via a subsequent ...
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The molten-salt synthesis and electrochemical capacitive behaviors of porous carbon are reported using anthracite as the precursor. Upon synthesis, the binary KCl/K 2 CO 3 molten salt not only exfoliates …
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Demineralized Summit (DS) anthracite, DS annealed at 1673 K, and graphite are used to explore the effect of precursor order on structural transformations and H2 evolution that result during reactive ball milling. Carbon structure was assessed before and after milling with temperature-programmed oxidation, X-ray diffraction (XRD), ultraviolet Raman …
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Tests of our current hypotheses that ball milling induces cross links in the coal structure facilitated by the evolution of hydrogen will be presented. ..., "Investigating Reactive Ball Milling of Anthracite Coal," Proceedings of the 23rd Annual International Pittsburgh Coal Conference (2006, Pittsburgh, PA), University of Pittsburgh, Sep 2006
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The anthracite-based carbon anode delivers the most excellent SIBs performance. ... The ball-mill jar was then fixed in the planetary ball-mill machine (XQM-0.2A, Changsha Tianchuang powder technology Co., Ltd) and rotated at 750 rpm for 8 h. After calcination of the resultant products at 600 °C for 1 h under Ar flow, a series of …
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N2 - Nanocrystalline diamond (NCD) was observed after reactive ball milling of anthracite coal with cyclohexene, a high-temperature (1400 °C) thermal anneal, and a 4 M HCl treatment followed by a 10 M NaOH treatment. A crystalline carbon region was also observed when the thermal anneal was omitted. This crystalline region is highly unstable ...
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The raw anthracite from Shanxi Jincheng was ball-milled at 350 rpm for 12 h using the planetary ball-milling equipment (QM-3SP2, Nanjing University Instrument Factory) and then 12 g obtained anthracite powders were pretreated with 60 mL mixed solution of 36–38 wt% HCl and 40 wt% HF (volume ratio of 1:4) at 50 °C for 4 h to …
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The effect of a pretreatment using reactive ball milling and calcination on the graphitizability of an anthracite coal is explored. A thermal anneal of Buck Mountain …
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Ball milling of magnesium under hydrogen atmosphere was applied to synthesize MgH 2 with carbon from anthracite coal as milling aid. The morphology, crystal structure, and isothermal/non-isothermal hydrogen desorption of …
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Nanocrystalline diamond (NCD) was observed after reactive ball milling of anthracite coal with cyclohexene, a high-temperature (1400 °C) thermal anneal, and a 4 M HCl …
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Enhanced Oxidative Reactivity for Anthracite Coal via a Reactive Ball Milling Pretreatment Step. Energy & Fuels 2009, 23 (9), ... Catalytic Activity of the Black Liquor and Calcium Mixture in CO2 Gasification of Fujian Anthracite. Chinese Journal of Chemical Engineering 2007, 15 (5), ...
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The structure and properties of magnesium nanoparticles for hydrogen storage from reactive milling under hydrogen atmosphere with the carbon from anthracite coal carbonization as milling aid were investigated. Experiment showed that after 3 h of milling under 1 MPa of hydrogen with 30 wt.% of carbon additive, the magnesium …
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The initial objectives of this research were to explore the substitution of anthracite coal into both carbon- and carbon–metal composites formed via a high …
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