Activated carbon with optimum pore size distribution for hydrogen storage

Sethia, Govind; Sayari, Abdelhamid

doi:10.1016/j.carbon.2015.12.032

Cited by 226 publications

(99 citation statements)

References 35 publications

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“…Currently, the traditional methods of storage include either compressing or liquefying hydrogen, which are limited by being highly energy demanding, inefficient, and relatively unsafe (Xiao et al 2014). Meanwhile, there has been a lot of research related to hydrogen adsorbed by metal hydride materials (Rango et al 2016), carbon materials (Zhao et al 2012b(Zhao et al , 2013Sethia and Sayari 2016), and MOF (Ren et al 2015) by physisorption or chemisorption. Among others, introduced into a nickel crucible and heat-treated in a muffle furnace (KDF, at a constant heating rate (3 °C/min) up to the final activation temperature (T=800 °C), which was maintained for 2 h. The crucible was then allowed to cool down to room temperature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Bamboo-Based Activated Carbons with Super-High Specific Surface Area for Hydrogen Storage

et al. 2017

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Activated carbons (ACs) were developed from the agricultural by-products of moso bamboo by pyrolysis carbonization and the KOH activation process. N2 adsorption-desorption at 77 K, thermogravimetric analysis (TG), X-ray photoelectron spectrometry (XPS), element analysis (EA), Xray diffraction (XRD), scanning electron microscopy (SEM), highresolution transmission electron microscopy (HRTEM), and Fourier transform infrared spectroscopy (FTIR) were used to investigate the synthesis process, the impact of the weight ratio of KOH/bamboo charcoal (BC), and the characteristics of the bamboo charcoal and ACs produced. The results showed that the developed bamboo ACs achieved surface areas (SBET) as high as 3208 m 2 /g and micropores volumes (VDR) as high as 1.01 cm 3 /g. The carbonation and activation of the bamboo resulted in the enhancement of the microstructure of the bamboo ACs, and hence improvements in the sorption behavior and storage capacity. The highest hydrogen storage capacities achieved were 6.6 wt.% at 4 MPa and 2.74 wt.% at 1 bar, both at 77 K, which were much higher than those of a wellknown commercial activated carbon.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Bamboo-Based Activated Carbons with Super-High Specific Surface Area for Hydrogen Storage

et al. 2017

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“…Microporous carbon materials have recently received tremendous attention not only because they exhibit physicochemical stability and high electrical conductivity but also because their micropores (<2 nm) exhibit molecular‐level phenomena, unprecedented in the macroscopic field. Owing to such properties, carbon can serve as an alternative or give insights for adsorbents, catalysts, separation membranes, and electrochemistry materials 1–4. For water treatment systems, microporous carbon‐based membranes can simultaneously achieve both high water permeability and water/salt selectivity 5.…”

Section: Introductionmentioning

confidence: 99%

“…Owing to such properties, carbon can serve as an alternative or give insights for adsorbents, catalysts, separation membranes, and electrochemistry materials. [1][2][3][4] For water treatment systems, microporous carbon-based membranes can simultaneously achieve both high water permeability and water/salt selectivity. [5] The micropores and their applications have been extensively investigated, [16,21] studies on the structural and compositional variations of PIMs during the entire carbonization process and their effects on the membranes applications are limited.…”

Section: Introductionmentioning

confidence: 99%

Carbonization of Carboxylate‐Functionalized Polymers of Intrinsic Microporosity for Water Treatment

Jeon

Kim

Jung

et al. 2020

Macro Chemistry & Physics

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Considering the variations in their pore characteristics and heterogeneity, the carbonization process of carboxylate‐functionalized polymers of intrinsic microporosity (PIM‐COOH) is investigated and the resulted membranes are tested for water treatment. The four distinct types of sub‐nanosized membranes with different oxygen‐to‐carbon ratios are prepared at four different temperatures: the pristine polymer membrane, crosslinked membrane via thermal decarboxylation, amorphous carbon membrane, and graphitic carbon membrane. Notably, the sub‐1 nm micropores of all the heat‐treated samples that do not exhibit a broadening pore size distribution are still retained. Nanofiltration performance is investigated using an aqueous MgSO4 solution (2000 ppm), pure water, and a series of the defect‐free, sub‐1 nm microporous membranes. While retaining the salt rejection, the water flux of the membranes increases with the pyrolysis temperature owing to their low friction property.

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“…AC has also been used for the removal of dye wastewaters (Chandra et al, 2007;Regti et al, 2017;Hameed et al, 2017;Kumar et al, 2018). The wide application of AC was due to its high surface area and high pore volume (Iqbal and Ashiq, 2007;Sethia and Sayari, 2016). Moreover, the application of AC produces effluents containing very low of dissolved organic concentrations (Chandra et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effects of Fe2+ and Fe3+ ratio impregnated onto local commercial activated carbon coconut shell powder on the dye removal efficiency

et al. 2018

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Sejarah artikel:The present study reports the performance of magnetic activated carbon impregnated with Fe 2+ and Fe 3+ on the removal of dye from a simulated wastewater. The magnetic activated carbon (MAC) as a magnetic absorbent was prepared by co-precipitation method and followed by impregnation process. The activated carbon (AC) was supplied from a local commercial activated carbon coconut shell powder. The objective of this study was to investigate the effects of Fe 2+ and Fe 3+ on the quality product of MAC for dye (methylene blue) adsorption. The molar ratios of Fe 2+ and Fe 3+ used during the preparation of the MAC were 1:1; 1:2, and 2:1. The MAC products were characterized by using scanning electron microscope (SEM), energy dispersive X-ray (EDX), and Fourier transform infrared spectroscopy (FT-IR) analysis techniques. The results confirmed that the concentration of magnetic particles (Fe 3 O 4 ) on the MAC surface increased following the impregnation process. However, this results lowering adsorption properties of the MAC adsorbents, which subsequently affected the dye removal performance. The ratio of Fe 2+ :Fe 3+ on the MAC preparation did not significantly change the MAC absorbent on the dye removal efficiency. Additionally, MAC derived from local AC possess a prospect as a sustainable alternative for dye pollutant adsorbent.

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Activated carbon with optimum pore size distribution for hydrogen storage

Cited by 226 publications

References 35 publications

Synthesis of Bamboo-Based Activated Carbons with Super-High Specific Surface Area for Hydrogen Storage

Synthesis of Bamboo-Based Activated Carbons with Super-High Specific Surface Area for Hydrogen Storage

Carbonization of Carboxylate‐Functionalized Polymers of Intrinsic Microporosity for Water Treatment

Effects of Fe2+ and Fe3+ ratio impregnated onto local commercial activated carbon coconut shell powder on the dye removal efficiency

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