巻号一覧
2004 巻 (2004)
- 215 号 p. 221-
- 214 号 p. 179-
- 213 号 p. 123-
- 212 号 p. 69-
- 211 号 p. 4-
2004 巻, 212 号
選択された号の論文の5件中1～5を表示しています
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スギ辺材の酸素-窒素雰囲気下での炭素化反応による炭素化物の酸性官能基形成菅本 和寛, 松下 洋一, 藤本 逸, 松井 隆尚2004 年 2004 巻 212 号 p. 69-74
発行日: 2004/04/01
公開日: 2010/06/28
ジャーナル フリーThe sawdust of Sugi (Cryptomeria japonica) sapwood was carbonized at 300°C for 1h under oxygen-containing atmosphere such as 5%O2+95%N2, 10%O2+90%N2, or air. The charcoals carbonized under 10%O2+90%N2 and air had high capacity of adsorption for both NaOH and NaHCO3 in aqueous solution. The adsorption of NH3 gas on the charcoals also increased with an increase in oxygen concentration of the atmosphere. It is suggested that the acidic groups on the charcoals increased on the carbonization under oxygen-containing atmosphere. Increasing carboxyl groups on the charcoal prepared under air was confirmed by IR and 13C-NMR spectra.抄録全体を表示PDF形式でダウンロード (1068K) -
林 卓哉2004 年 2004 巻 212 号 p. 75-80
発行日: 2004/04/01
公開日: 2011/07/05
ジャーナル フリーElectron energy loss spectroscopy (EELS) is known to be a powerful tool for the nanoscalc elemental analysis and understanding the bonding state of carbon materials. Since EELS instruments are highly computerized, we need to know how the software works to obtain a good spectrum. Post-processing of the spectra and spectrum simulation are also important for the better interpretation of the observed spectrum.
Here, we briefly introduce how the PCs are used in acquiring, analyzing, and simulating the electron energy loss spectra of carbon materials. For the help of the readers. we have indicated the software used upon each step of EELS analysis.抄録全体を表示PDF形式でダウンロード (10341K) -
山本 雅博, 今村 裕典2004 年 2004 巻 212 号 p. 81-90
発行日: 2004/04/01
公開日: 2010/06/28
ジャーナル フリーFirst-principle calculations are the state-of-the-art theoretical method to explain the physico-chemical properties of solid and solid surface and owing to the predictability of the theory it gives us the guideline for the material design. In this article recent studies on the first-principles calculation of graphite intercalation compound are reviewd and our first-principles calculations on Li intercalation compunds are also shown. The calculation are in good agreement with the experimetal results reported. We also predict some results of the energy barrier for the intercaltion of Li to the stepped ghaphite surface.抄録全体を表示PDF形式でダウンロード (4631K) -
野村 忠範, 島村 喜代司, 宮下 憲和2004 年 2004 巻 212 号 p. 91-98
発行日: 2004/04/01
公開日: 2010/06/28
ジャーナル フリーPVDC carbons are interested as a candidate of active carbon for EDLC electrodes or a storage material for methane or hydrogen, because of its has high bulk density and narrow distribution of nanopores. A nanocarbon was prepared from PVDC copolymer latex by alkaline-dehydrochlorination and subsequent pyrolysis. The latex in solids of 50% based on weight is commercially available. The aggregates of partially dehdrochlorinated latex in alkaline aqueous solution are was easily redispersed, filtered and rinsed. SEM images showed that the shape and the size of the particles of latex are substantially maintained; the nanoparticles in the latex, the precursors and the sintered material had almost same shape and size. TEM images showed that nanocarbons with hollow-like (core-shell) or onion-like structure are exhibited. The shell phase of the hollow-like carbon seemed to have high density. The onion-like carbon was considered to be partially graphitized.抄録全体を表示PDF形式でダウンロード (10661K) -
渡邉 史宜, 持田 勲2004 年 2004 巻 212 号 p. 99-105
発行日: 2004/04/01
公開日: 2010/06/28
ジャーナル フリーStructure and thermal characteristics of carbonized and graphitized foam derived from AR, which is commercial 100 % mesophase pitch, are reviewed. AR-Foam consists of soft-carboneous wall and uniform open pores with several hundred micrometers in diameter. The graphitized AR-Foam exhibited thermal conductivity per unit volume which is several times higher than that of metal foam. This unique foam is expected for applications as the thermal management material.抄録全体を表示PDF形式でダウンロード (11243K)
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