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A series of porous γ-Al2O3 materials was prepared by solution-combustion and ball-milling processes. The as-prepared powders were physicochemically characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), and N2 physisorption measurements and their performances in CO2 adsorption at different pressures (0.5 to …
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Mineral carbonation has been suggested as a safe carbon capture and storage (CCS) strategy for the mitigation of climate change. This study investigates the effect of ball milling on the CO 2 sequestration capacity of peridotites, which are among the most promising readily available lithologies for CCS on the Earth's surface. A …
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Transforming carbon dioxide (CO2) into value-added fuels is an innovative way to address both the energy and the climate issues. ... Metal sodium (Na0) was used as the reducing agent to break the C–O bond and as a inducer of hydrogen transfer. A ball-milling mechanochemical method was used for the solid-phase reaction. Results show …
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Iron- and nitrogen-doped carbon-based catalysts are one of the most promising alternatives to platinum-group metal-based ones currently used in the fuel cell industry. Here, we study the effect of ball-milling conditions and compositions of catalyst precursors comprising a silicon carbide-derived carbon (CDC) on the properties of the …
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Isolation of Cellulose Nanofibers (CNFs) based on Ball-milling Technique Combined with Supercritical Carbon dioxide/ethanol Pretreatment February 2021 DOI: 10.21203/rs.3.rs-277886/v1
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The agate tank was attached to a high-energy ball milling device (MSK-SFM-3) for conducting a 30-min experiment at a revolution speed of 1200 rpm. After that, the mixtures obtained after ball milling were calcinated in the tubular furnace at 550 ℃ for 4 h under Ar condition. ... of CPDs compared to that of KCNNS (–0.76 eV) and E …
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Samples were mechanically milled in a very high-energy ball mill EMAX (Retsch), which achieves maximum intensity ball grinding in short times by the joint action of impact and shear stresses. 100 cm 3 steel jars and 50 steel balls per jar with a diameter of 10 mm were employed for milling. The limestone sample weight to ball ratio was set …
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The exfoliation difficulty has been reduced due to the intercalation effects of supercritical CO2 molecules. With the ball-milling assistance, the modifier has been introduced onto the edge or/and surface of the GNs. The process results in hydrophilic GNs with little damage to the in-plane structure. The GNs can be dispersed in various …
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The production of synthetic natural gas from captured CO2 and green H2 via methanation presents a compelling solution to long-term energy storage challenges and the imperative to mitigate CO2 emissions. In this study, we developed a facile solvent-free ball-milling technique to prepare CeO2-doped, SiO2-supported Ni-based catalysts for …
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Carbon dioxide is a significant component of the Earth's atmosphere, which has also a determinative role in the greenhouse effect. ... The basic concept of this study is to accelerate the carbonation rate (or CO 2 uptake) of basaltic rocks via the ball milling process. It has been demonstrated that long milling can improve the performance of …
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The excessive emission of carbon dioxide (CO 2) poses a serious threat to the sustainable development of human beings.The efficient conversion of CO 2 into high-value-added chemicals is of great …
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The milling of Bi 2 Te 3 in supercritical carbon dioxide is shown to be conclusively superior to conventional milling, overcoming the minimum steady state saturation size …
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The 2D materials exhibit numerous technological applications, but their scalable production is a core challenge. Herein, ball milling exfoliation in supercritical …
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Request PDF | On Mar 31, 2015, Ioannis Rigopoulos and others published Carbon dioxide storage in olivine basalts: Effect of ball milling process | Find, read and cite all the …
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Conventional methods to gasify or liquefy carbon-based polymers use high temperatures because of carbon–carbon bond stability. Here, the authors describe a mechanochemical ball milling method to ...
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The excessive release of carbon dioxide (CO 2) resulting from human activities, ... The dry ball-milling procedure was further employed to produce the final sorbents. The SS, E-3 K and P-3 K samples were milled in a planetary ball mill for 1.5 h, and their resulting sorbent was designated as SS-1.5 M, E-3K-1.5 M, P-3K-1.5 M, respectively. ...
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To be considered a good CO2 capture material for industrial applications, alkaline ceramics have to present several properties such as fast sorption and desorption kinetics, large sorption capacities, regenerability and stability, and a wide operating temperature range. ... (Li 4+x Si 1−x Fe x O 4, with x ≤ 0.5); by a dry ball milling ...
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In this study, the influence of high energy ball milling and supercritical carbon dioxide impregnation on the properties of binary systems, composed of TD and SL, were compared. For all the formulations, TD was vitrified by high energy ball milling, while it was found to remain crystalline after the scCO 2 impregnation process. In the …
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Ball-milling in series with shearing exfoliation in the supercritical CO 2 system was manufactured by Nantong Wisdom Supercritical Science and Technology Development Co., Ltd. The schematic diagram of the exfoliation equipment was shown in Fig. 1, which mainly consists of the SC-CO 2 ball-milling subset and SC-CO 2 shear …
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Mechanochemical technique aims to strike a balance between defect formation via ball milling and size adjustment of a solid grain to nanoscale (<1000 nm) (Ullah et al., 2014).During the process, a high-energy mill is employed and a specific powder charge is placed along with a milling medium (Lin et al., 2017).The kinetic …
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Here, a new pretreatment method has been developed to produce CNFs from micro-fibrillated cellulose (MFC) by supercritical CO 2 pretreatment followed with ball-milling (SCB). MFC was obtained from cotton stalk by chemical purification.Experimental factors were controlled to enhance the properties of SCB-CNF, meanwhile a …
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The excessive emission of carbon dioxide (CO 2) poses a serious threat to the sustainable development of human beings.The efficient conversion of CO 2 into high-value-added chemicals is of great significance for solving the greenhouse effect and energy crisis. Herein, a new strategy is proposed to turn CO 2 into Si/C/SiC composites through …
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DOI: 10.1016/J.MINENG.2018.02.011 Corpus ID: 104075481; Effect of ball milling on the carbon sequestration efficiency of serpentinized peridotites @article{Rigopoulos2018EffectOB, title={Effect of ball milling on the carbon sequestration efficiency of serpentinized peridotites}, author={Ioannis Rigopoulos and Andreas …
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Although the increase of CO2 uptake after ball milling for the basalt under study here is not proportional with the increase of its specific surface area, the enhancement of its CO2-storage capacity by 295% (per gram basis) can be considered of great significance. Additionally, it should be mentioned that the unmilled olivine basalt shows ...
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Surface treatment by ball milling processing under an Ar atmosphere suppressed the CO 2 absorption reaction. The CO 2 absorption rate was improved by incorporating K 2 CO 3 into Li 4 SiO 4. This was because of the increased surface area and activation by ball milling, and also from the absorption of CO 2 by coexisting K 2 CO 3.
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Ball milling is a simple, fast, cost-effective green technology with enormous potential. One of the most interesting applications of this technology in the field of cellulose is the …
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Manganese oxides prepared at different milling speeds as well as several Pt- and Cu-doped (loaded with ball milling, wet impregnation method and ultrasonication assisted addition of …
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Carbon dioxide (99.9%) was purchased from Shanghai high-tech Co., Ltd., China. Ball-milling in series with shearing exfoliation in the supercritical CO 2 system. Ball-milling in series with shearing exfoliation in the supercritical CO 2 system was
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Although the increase of CO2 uptake after ball milling for the basalt under study here is not proportional with the increase of its specific surface area, the enhancement of its CO2-storage capacity by 295% (per gram basis) can be considered of great significance. Additionally, it should be mentioned that the unmilled olivine basalt shows ...
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Reaction involved in a Planetary Ball Mill equipped with four stainless steel vessels. A specific mol ratio mixture of ZnCl 2, K 3 Fe(CN) 6 with a small amount of t BuOH were put into each vessel, as shown in Table 1, then co-CAs PEG, PPG and PTMEG were added to the vessel 2, 3 and 4, respectively, while vessel 1 without any co-CAs.The …
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