Scalable massive production of defect-free few-layer graphene by ball
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
Figure 8 from Ball Milling Effect on the CO2 Uptake of Mafic …
This study comprises a comparative review of the effect of ball milling on the CO2 uptake of ultramafic/mafic lithologies, which are the most promising rocks for the mineralization of CO2. Samples of dunite, pyroxenite, olivine basalt and of a dolerite quarry waste material were previously subjected to ball milling to produce ultrafine powders ...
Carbon dioxide storage in olivine basalts: Effect of ball …
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 …
High energy ball milling and supercritical carbon dioxide impregnation
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 …
Reactive ball-milling synthesis of Co-Fe bimetallic catalyst …
DOI: 10.1016/j.jechem.2023.05.025 Corpus ID: 259035706; Reactive ball-milling synthesis of Co-Fe bimetallic catalyst for efficient hydrogenation of carbon dioxide to value-added hydrocarbons
Capture of CO2 on γ-Al2O3 materials prepared by solution
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 …
One-pot mechanochemical ball milling synthesis …
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 …
Effect of ball milling on the carbon sequestration efficiency …
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 …
High-Throughput and Scalable Exfoliation of Large-Sized
The 2D materials exhibit numerous technological applications, but their scalable production is a core challenge. Herein, ball milling exfoliation in supercritical carbon dioxide …
Effect of Ball-Milling on the Oxygen Reduction Reaction …
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 …
Ball-Milling-Triggered Synthesis of Si/C/SiC@MCMB …
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 …
Synthesis of Li4+xSi1−xFexO4 solid solution by dry ball milling …
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 ...
Ball milling: a green technology for the preparation and
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 …
Helping to reduce mining industry carbon emissions: A step …
Whereas 30 years ago the rule of thumb for designing AG/SAG-Ball mill circuits was to split the total installed motor capacity 50:50 between the AG/SAG and ball mill circuits, Tozlu and Fresko's data show that in the last 20 years this has shifted considerably with the split being more in favour of ball mill circuits.
Effect of ball milling on the carbon sequestration efficiency …
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 …
Scalable Production of Hydrophilic Graphene Nanosheets via in situ Ball
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 …
Solvent-Free Ball-Milling-Derived Ni-CeO2/SiO2 Catalysts for CO2 …
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 …
Effect of milling mechanism on the CO2 capture performance of limestone
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 …
(PDF) Carbon dioxide storage in olivine basalts: Effect of ball milling …
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 ...
Farewell to 'forever' – Destroying PFAS by grinding it up with …
They now report a ball milling process that uses boron nitride as a non-corrosive additive to react with and destroy PFAS. As a proof-of-concept for the new additive, the team ball milled two legacy PFAS compounds with boron nitride and analyzed the products. By optimizing the ratio of boron nitride to PFAS, the team almost …
High temperature capture of CO2 on Li4SiO4 sorbents via a …
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. ...
Ball milling as a mechanochemical technology for …
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 …
Synthesis of Zn–Fe double metal cyanide complexes with imidazolium
The modified Zn–Fe DMC catalysts were effective for the alternating copolymerization of carbon dioxide and propylene oxide under controlled reaction conditions. ... In this work, Zn–Fe double metal cyanide (DMC) catalysts were successfully synthesized via clean and efficient ball milling. Imidazolium-based ionic liquids as cocatalysts were ...
Coupling reaction of CO2 and propylene oxide catalyzed by …
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 …
(PDF) Ball Milling Effect on the CO2 Uptake of Mafic and Ultramafic
Adsorbed CO2 (μmol g −1 ) versus ball milling time (h) for the unmilled and ball-milled dunite, pyroxenite, basalt and dolerite samples (data from Rigopoulos et al. [19,25,32,33]).
Ball-Milling-Triggered Synthesis of …
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 …
Construction of carbonized polymer dots/potassium doped carbon …
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 …
(PDF) Carbon dioxide storage in olivine basalts: Effect of ball milling …
Carbon dioxide storage in olivine basalts: Effect of ball milling process
Reactive ball-milling synthesis of Co-Fe bimetallic catalyst …
The CO 2 activation can be promoted by the CoFe phase formed by reactive ball milling of the Fe-Co 3 O 4 mixture, and the in-situ Co 2 C and Fe 5 C 2 formed during hydrogenation are beneficial for the C–C coupling reaction. The initial C–C coupling is related to the combination of CO species with the surface carbon of Fe/Co carbides, and ...
Hydrogenation of different carbon substrates into light
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 ...