Grain-based activated carbons for natural gas storage

Zhang, Tengyan; Walawender, Walter P.; Fan, Liang‐Shih

doi:10.1016/j.biortech.2009.10.046

Cited by 44 publications

(21 citation statements)

References 18 publications

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“…Natural gas burns cleaner than gasoline, emitting fewer hydrocarbon and 90% less carbon monoxide [1]. To be used as a transportation fuel, natural gas has to be stored in a special storage system owing to its low volumetric energy density.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the preparation of activated carbon from palm kernel shell for methane adsorption using Taguchi orthogonal array design

Syed‐Hassan

Zaini

2016

Korean J. Chem. Eng.

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The preparation of activated carbon from palm kernel shell for methane adsorption was studied. Taguchi orthogonal array design was employed to optimize the preparation of activated carbon. The statistical results show that the optimized conditions are the impregnation ratio of 0.55, the activation temperature of 900 o C and the activation time of 150 min. The impregnation ratio has the most influence on methane adsorption based on S/N ratio analysis. The mathematical model was developed using regression analysis as a function of independent variables. The results of experiment using optimum conditions fall within the predicted value obtained from the developed model. Activated carbon prepared at optimum conditions which have the highest BET surface area of 1,548.0 m 2 /g and the total pore volume of 1.0 cm 3 /g recorded the highest methane uptake compared to other conditions. The equilibrium data of the adsorption characteristic fitted favourably to the Freundlich isotherm.

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Section: Introductionmentioning

confidence: 99%

Optimization of the preparation of activated carbon from palm kernel shell for methane adsorption using Taguchi orthogonal array design

Syed‐Hassan

Zaini

2016

Korean J. Chem. Eng.

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“…The effective micropore volume comprises the pores with diameters ranking from three to six times the molecular size of the adsorbate. Since a methane molecule has a diameter of 0.38 nm, it can penetrate with ease into the pores with the diameters about 1-2 nm 10 . The obtained diameters of the studied carbons were mostly in that range, which is presented in Figures 4-6.…”

Section: Resultsmentioning

confidence: 99%

The simplex optimization for high porous carbons preparation

Sreńscek-Nazzal

Michalkiewicz

2011

Polish Journal of Chemical Technology

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The microporous carbon materials were prepared by chemical activation of Polish coal with potassium hydroxide using the simplex design method for planning the experiments. The experimental parameters were varied to identify the optimum conditions. Coal can be an excellent starting material for the preparation of high porous carbons for natural gas storage. The porosity of the resultant carbons was characterized by nitrogen adsorption (-196 o C). Methane adsorption was investigated in a volumetric laboratory installation at range pressures from 1 to 3.5 MPa (25 o C). The best results of methane storage capacity (557 cm 3 . g -1 ) were obtained when using an impregnation ratio 3.41/1 KOH/precursor and temperature at 592 o C, (S LANG = 2091 m 2 . g -1 ). The parameters of the preparation of high porosity and high methane adsorption carbon were determined by a fast and simple method.

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“…The ACs have been produced from various natural carbon materials [3]. However, the ACs produced from biomasses generally have low packing density and cannot achieve high ANG volumetric capacity, since the volumetric storage capacity is usually based not only on specific surface area but also on packing density of the adsorbent [4]. MRA, which is highly rich in carbon content, was used for preparing adsorbent material for specific applications such as gas and energy storages.…”

Section: Introductionmentioning

confidence: 99%

Influence of compressing pressure on macro void formation of carbon monolith for methane adsorption

et al. 2018

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INTRODUCTIONThe ANG has been known as a modern technology in which natural gas is adsorbed by porous materials at relatively low pressures around 3.5 MPa and at room temperature. Once a good medium with sufficient working capacity is developed, ANG will be competitive technically and economically comparing with the conventional storage methods such as LNG and CNG. In order to make this ANG as a competitive commercial technology, the DOE had set a storage target of 180 V/V at 3.5 MPa and 298 K in 2000 and modified this target up to more than 220 V/V that is the maximum achievable capacity based on carbon-based materials [1,2]. Volumetric storage capacities for methane (a major constituent of natural gas) have been reported in the range from 150 to 200 V/V from bench-scale experiments but there is no information regarding the practical application of ANG technology. Methane adsorption on carbon materials has a rich history. ACs are excellent adsorbent materials for methane storage and expected to possess high surface area and proper pore size distribution. The ACs have been produced from various Narandalai et al. Mong. J. Chem., 18 (44), 2017, 24-35 https://doi.org/10.5564/mjc.v18i44.934 Influence of compressing pressure on macro void formation of carbon monolith for methane adsorption ABSTRACTCarbon monoliths for adsorbed natural gas (ANG) storage were prepared from Mongolian anthracite-based activated carbons using carboxy-methyl cellulose as a binder under different compressing pressures. Nitrogen adsorption/desorption experiments were carried out to obtain the specific surface area, pore volume, and pore size distribution of the monoliths.Methane adsorption experiments on the carbon monoliths were conducted at different temperatures and pressures up to around 3.5 MPa in a high pressure volumetric adsorption apparatus. As expected, adsorption results indicated that the methane adsorption capacity of the carbon monoliths increased with increasing specific surface area and packing density.The maximum volumetric adsorption of methane was observed as 163 V/V at 293 K and 3.5 MPa on a carbon monolith sample, PMAC1/2-3-65, that does not have the highest specific surface area but relatively high packing density comparing with other monoliths, which implies that two physical properties contribute contradictorily to the methane adsorption capacity. Based on experimental results, the carbon monoliths prepared from Mongolian anthracite-based activated carbons can be promising media for ANG storage application.

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Grain-based activated carbons for natural gas storage

Cited by 44 publications

References 18 publications

Optimization of the preparation of activated carbon from palm kernel shell for methane adsorption using Taguchi orthogonal array design

Optimization of the preparation of activated carbon from palm kernel shell for methane adsorption using Taguchi orthogonal array design

The simplex optimization for high porous carbons preparation

Influence of compressing pressure on macro void formation of carbon monolith for methane adsorption

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