Effect of shape and size of raw material in preparation of microporous carbon materials from bamboo (Phyllostachys pubescens Mazel ex Houzeau de Lehaie)

Iwasaki, Satoshi; Hasegawa, Takahiro; Ohya, Kazumi; Shibutani, Yasuhiko; Abe, Ikuo

doi:10.7209/tanso.2005.270

Cited by 16 publications

(2 citation statements)

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“…Besides coconut shells, which have been historically required to produce AC with a high specific surface area (SSA), cocoons [1], pruned apple branches [2], wheat bran, and spent coffee grounds (SCG) [3] were reported as potential raw materials for high-quality AC. Recently, bamboo has also attracted attention [4][5][6][7][8][9], especially because of its fast growth and sustainable yield.…”

Section: Introductionmentioning

confidence: 99%

Pore structure and the properties of electric double layer capacitor electrode of bamboo-derived activated carbon prepared by superheated steam

et al. 2018

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Bamboo-derived activated carbon prepared by superheated steam (BAC) exhibited performance for utilization as an electric double layer capacitor (EDLC) electrode. Pore structure and EDLC performances were investigated by comparison with phenol resin-derived activated carbon (MSP-20), which is commercially available and often used for the purpose. The nitrogen adsorption isotherm showed that BAC had a large BET-specific surface area of 1268 g/m 2 with a developed pore structure, especially of the mesopore, in comparison with MSP-20. It is considered that inherent ash in bamboo promoted activation, in addition to physical activation by superheated steam. Capacitance per electrode volume (C V) was 52 F/cm 3 with BAC. Because the density of BAC is high (0.78 g/cm 3) compared with that of MSP-20 (0.58 g/cm 3), sufficient C V for usage was obtained, although the capacitance per electrode mass (C M) at 5 mA/cm 2 itself of BAC (67 F/g) was lower than that of MSP-20 (126 F/g). With IR drop, the resistance value of BAC (9.7 Ω) was lower than that of MSP-20 (10.5 Ω). Especially, the diffusion resistance of BAC disclosed to be smaller than that of MSP-20. These results indicated that BAC produced by steam activation is a promising material with a pore structure suitable for ion transfer in EDLC.

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Section: Introductionmentioning

confidence: 99%

Pore structure and the properties of electric double layer capacitor electrode of bamboo-derived activated carbon prepared by superheated steam

et al. 2018

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“…Characterization of bamboo charcoals has previously suggested that ultra-micropores may be controlled by controlling of carbonization temperature [6,7]. Bamboos are a sustainable starting material for developing Asian countries since bamboos are one of the fastest-growing plants [8,9] and more than 60% of the world's bamboo resources are located in Asia [10].…”

Section: Introductionmentioning

confidence: 99%

Simple fabrication of molecular sieving carbon for biogas upgrading via a temperature controlled carbonization of Phyllostachys pubescens

et al. 2016

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In this study, molecular sieving carbons (MSCs) for biogas upgrading were successfully fabricated by a simple temperature controlled carbonization of moso bamboo (Phyllostachys pubescens) without energy consuming steps (i.e. char activation and pore modification). As the carbonization temperature increased from 600 to 900 °C, the specific surface area of bamboo charcoals increased and the pore size distribution of bamboo charcoal became narrower and closer to the dimensions of CH 4 (0.38 nm). Bamboo charcoals had a more disordered carbon stacking structure than commercial MSC and contained more surface oxides, which contribute to greater surface reactivity than commercial activated carbon. Bamboo charcoal carbonized at 900 °C had the highest CO 2 adsorption capacity (121.6 g kg −1), even higher than commercial MSC (102.88 g kg −1). Despite the poor kinetic CO 2 adsorption properties of bamboo charcoals compared to commercial MSC, synthetic biogas (60% CH 4 + 40% CO 2) was successfully upgaded to concentrated CH 4 (>90%) by small-scale pressure swing adsorption using bamboo charcoal. It is expected that bamboo charcoals can contribute to sustainable small-scale biogas upgrading.

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Carbonization of bamboo and consecutive low temperature air activation

Yamashita

Machida

2010

Wood Sci Technol

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Effect of shape and size of raw material in preparation of microporous carbon materials from bamboo (Phyllostachys pubescens Mazel ex Houzeau de Lehaie)

Cited by 16 publications

References 1 publication

Pore structure and the properties of electric double layer capacitor electrode of bamboo-derived activated carbon prepared by superheated steam

Pore structure and the properties of electric double layer capacitor electrode of bamboo-derived activated carbon prepared by superheated steam

Simple fabrication of molecular sieving carbon for biogas upgrading via a temperature controlled carbonization of Phyllostachys pubescens

Carbonization of bamboo and consecutive low temperature air activation

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