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発行日: 1999/07/22
公開日: 2017/03/22
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大植 弘義, 上西 由起
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発行日: 1999/07/22
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貴傳名 甲, 村田 聡, 野村 正勝
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発行日: 1999/07/22
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Measurements of solid-state NMR of coal were conducted to estimate the average size of aromatic cluster in it. Firstly, the carbon distribution was obtained from SPE/MAS ^<13>C-NMR spectra and their data analysis. Secondary, ^1H-CRAMPS NMR spectra gave the hydrogen aromaticity of coal. Combination use of the hydrogen aromaticity and elemental analysis data could afford the amount of tertiary aromatic carbon. The parameter of χ_b, the mole fraction of aromatic bridgehead carbons in all aromatic carbons, could be derived from above NMR data and elemental analysis of coal. χ_b is directly correlated to the number of aromatic carbon atoms per aromatic cluster, C. The value of C ranged from 7.3 for brown coal to 22.6 low volatile bituminous coal.
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三宅 幹夫, 齋藤 諭, 寺西 利治
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発行日: 1999/07/22
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Reaction conditions of RuO_4 oxidation of coals were investigated to produce carboxylic acids with high yields and without secondary reactions. Amounts of mono-and dicarboxylic acids increase by a decrease in coal rank, which tendencies may reflect those of alkyl groups and methylene bridges contained in coals, respectively. Maximum amount of adipic acid, as connected to naphthenic rings in coal, was observed for coals with 80-85 wt%C.
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谷 康史, 廣 真誉, 貴傳名 甲, 村田 聡, 野村 正勝
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発行日: 1999/07/22
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RuO_4 is known to have a nature to attack preferentially sp^2 carbon in organic materials, therefore this reagent can be applied for structural analysis of aliphatic portions in coal. One of the most serious problems of the reaction with RuO_4 is a lack of material balance. In the present study, we tried to solve this point by analyzing extensively water-soluble and organic solvent soluble portions, and finally succeeded in attaining about 90-100% carbon recovery. In this presentation, we are to report the results of this reaction of four different rank coals (two brown and two bituminous coals).
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池永 直樹, 近藤 克利, 鈴木 俊光
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発行日: 1999/07/22
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The purpose of this study was to obtain fine particles of iron sulfide from organic iron compounds. Catalysis of iron sulfide prepared was investigated on the liquefaction of Tanitoharum coal in 1-methylnaphthalene under hydrogen of 5MPa at 425℃. Iron sulfides (particle size: 1-1.5μm, surface area: 4-15m^2/g) could be prepared from Fe(CO)_5 and Fe(acac)_3. Catalytic activities of these iron sulfides were higher than that of pulverized natural pyrite.
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林 石英, 鈴木 善三, 幡野 博之, 原田 道昭
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発行日: 1999/07/22
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米山 嘉治, Chunchan Song
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発行日: 1999/07/22
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Model compound reactions of 4-(1-naphtylmethyl) bibenzyl (NMBB) were carried out at 350-425℃ under H_2 pressure in order to examine the activity of MoS_2 catalysts generated from ammonium tetrathiomolybdate (ATTM) with and without added water for C-C bond cleavage and hydrogenation of aromatic ring. The MoS_2 catalysts generated from ATTM with added water were much more effective for C-C bond cleavage and hydrogenation of aromatic rings at 350-425℃ than those from ATTM alone. The MoS_2 catalysts have larger surface area and less crystalline than those from ATTM alone. The larger surface area and higher porosity of the MoS_2 catalysts from ATTM should be responsible, at least in part, for the high activity observed in the catalytic reactions when compared to the catalysts from ATTM alone.
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奥山 憲幸, 小松 信行, 田村 正明, 嶋崎 勝乗
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セッションID: P-8
発行日: 1999/07/22
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村田 聡, 宮谷 康洋, 安田 貞勲, Levent ARTOK, 蘇 燕, 野村 正勝
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セッションID: P-9
発行日: 1999/07/22
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This work summarized the structural characterization of the vacuum residue asphaltene based on the mainly spectroscopic and pyrolytic methods, and discussed these results by reffering to the knowledge from RICO reaction. Then, a unit structural model for the asphaltene was presented. The reactivity of the asphaltene was also discussed from its catalytic hydrocracking reaction in a batch reactor using metal-loaded Y-type zeolite catalyst.
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佐々木 皇美, 野田 良男, 井戸川 清
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セッションID: P-10
発行日: 1999/07/22
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三浦 孝一, 前 一広, 長谷川 功, 真藤 博之
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セッションID: P-11
発行日: 1999/07/22
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鈴木 善三, 幡野 博之, 大屋 正明, 林 石英, 原田 道昭
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セッションID: P-12
発行日: 1999/07/22
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柳下 立夫, 澤山 茂樹, 塚原 建一郎, 小木 知子
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セッションID: P-13
発行日: 1999/07/22
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林 順一, 風早 敦夫, 室山 勝彦
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セッションID: P-14
発行日: 1999/07/22
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We tried to prepare an activayed carbon from lignin by chemical activation with K_2CO_3. The prepared activated carbon, which was impregnated with K_2CO_3 at the ratio of 1.0 and carbonized at 900℃, had the high specific surface area of near 2000m^2/g. We investigated the activating mechanism and it was found that there were two stages where K_2CO_3 works effectively as an activating reagent. In the lower temperature range lignin was modified by K_2CO_3 and in the higher temperature range carbon was gasified by reduction of K_2CO_3.
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和田 健司, 山田 弘一, 分藤 雅紀, 近藤 輝幸, 光藤 武明
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セッションID: P-15
発行日: 1999/07/22
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和田 健司, 中林 大輔, 古田 剛志, 光藤 武明
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セッションID: P-16
発行日: 1999/07/22
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岩本 伸司, 安田 孝志, 井上 正志, 植村 榮
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セッションID: P-17
発行日: 1999/07/22
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Maria Rosa, TORRES SANCHEZ, 春田 正毅, 高瀬 経義, 石田 典敏
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セッションID: P-18
発行日: 1999/07/22
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申 文杰, 松村 安行, 春田 正毅
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セッションID: P-19
発行日: 1999/07/22
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近藤 康彦, 八木田 浩史, 稲葉 敦
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セッションID: P-20
発行日: 1999/07/22
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