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Volume 2001 (2001)
- Issue 200 Pages 202-
- Issue 199 Pages 155-
- Issue 198 Pages 125-
- Issue 197 Pages 83-
- Issue 196 Pages 1-
Volume 2001, Issue 199
Displaying 1-6 of 6 articles from this issue
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Tomoko Fukuhara, Ikuo Abe, Isao Somiya2001 Volume 2001 Issue 199 Pages 155-160
Published: October 05, 2001
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSEffects of the pore structure of eight kinds of activated carbons on attached biomass were examined. Four of the activated carbons prepared from an identical wood had different pore structures. All the activated carbons were simultaneously soaked in the water containing glucose, sodium glutamate, raffinose and microorganisms at 25°C. The attached biomass on the activated carbons was estimated by nitrogen analysis. Iodine number of the activated carbons was also measured. The attached biomass on the activated carbons increased with the development of micropores and/or macropores of the activated carbons. The volume of micropores produced a greater effect than that of macropores. The attached biomass was affected by the pore volume rather than the raw material. It was surmised that the organic substances adsorbed on micropores were desorbed and supplied to the attached microorganisms on the macropores, with the attached microorganisms promoting desorption.View full abstractDownload PDF (4363K) -
Jun-ichi Ozaki, Yoshinori Uchiyama, Asao Oya2001 Volume 2001 Issue 199 Pages 161-165
Published: October 05, 2001
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSEffects of iron catalyst on the carbonization and the graphitizaion of a brown coal- Loy Yang coal- was studied with targeting the fabrication of electrocatalyticarbon materials from this cheaper raw material of carbon. Peak separation of the carbon (002) region in X-ray diffractogram revealed the presence of at least three components, amorphous (A), turbostratic (T) and graphitic (G) components. The manner in the development of the crystallite size of the T component with the heat treatment temperature was different among the samples with lower iron content (<0.5 %Fe) and those with higher content (>5 %Fe); i.e. the crystallite of the former group samples continuously grew, on the other hand the latter group showed a leveled growth in the crystallite size. The electrocatalytic activity of the samples with higher iron content had a good correlation with the crystallite size of the T component, however the samples with lower iron content did not. Together with the TEM observation, it was concluded that a special type of turbostratic structure-TS phase- presented in the samples with higher iron content, and this phase was responsible for the higher electrocatalytic activity.View full abstractDownload PDF (2364K) -
Trial for Practical ApplicationsMasahiro Toyoda, Naoto Dogawa, Tomonori Seki, Atushi Fujita, Michio In ...2001 Volume 2001 Issue 199 Pages 166-169
Published: October 05, 2001
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSFor a practical application to recover heavy oil, exfoliated graphite packed into a plastic bag and compacted exfoliated graphite were prepared. Their sorption behavior was studied. Exfoliated graphite packed into a polypropylene non-woven bag with a lower bulk density sorbed 40g A-grade heavy oil per 1g exfoliated graphite. The sorption of heavy oil by the exfoliated graphite compacts showed a little lower sorption capacity than exfoliated graphite packed in the plastic bag. The use of exfoliated graphite packed into a plastic bag seemed to be effective in recovering heavy oil spilled on water.View full abstractDownload PDF (1726K) -
Prof. H. Shirakawa's Researches Related to Carbon MaterialsMasashi Kijima2001 Volume 2001 Issue 199 Pages 170-175
Published: October 05, 2001
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIn the discovery and development of conductive polymers, carbon science complementarily affected the field growth. From the Nobel Lecture in Chemistry by Dr. H. Shirakawa and his researches related carbons, the correlation between conjugated polymers and carbon materials is investigated and summarized.View full abstractDownload PDF (2474K) -
Takashi Kyotani2001 Volume 2001 Issue 199 Pages 176-185
Published: October 05, 2001
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSPorous carbon materials or activated carbons are characterized by their highly developed internal surface area and porosity. Especially the development of micro- and mesopore is of great importance. Many novel approaches to control such pore structure have been proposed. Among them, one of the most important and elegant techniques is the template carbonization method. So far many researchers have prepared novel porous carbons with the template technique using a variety of inorganic porous templates, such as layered clay, porous glass, silica gel, silica sol, zeolite and mesoporous silica. In this review, we introduce such template-mediated approach and highlight how useful and versatile the template technique is for the production of porous carbons.View full abstractDownload PDF (1726K) -
[in Japanese]2001 Volume 2001 Issue 199 Pages 187
Published: October 05, 2001
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (1443K)
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