Pub Date : 2011-01-01DOI: 10.1246/NIKKASHI.1976.1171
Tadashi Yamaguchi, Taiji Kamiguchi, Toshimichi Fro, S. Ohkita, Tomio Goto
{"title":"Degradation of Polymers in the Presence of Anhydrous Aluminum Chloride","authors":"Tadashi Yamaguchi, Taiji Kamiguchi, Toshimichi Fro, S. Ohkita, Tomio Goto","doi":"10.1246/NIKKASHI.1976.1171","DOIUrl":"https://doi.org/10.1246/NIKKASHI.1976.1171","url":null,"abstract":"","PeriodicalId":19311,"journal":{"name":"Nippon Kagaku Kaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85955221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mesomorphic Properties of p-Benzoquinone Derivatives","authors":"H. Matsutani, S. Sata, M. Sugiura","doi":"10.1246/NIKKASHI.2002.309","DOIUrl":"https://doi.org/10.1246/NIKKASHI.2002.309","url":null,"abstract":"ベンゼン誘導体1の報告以降，二次元円盤状の分子が示すディスコチック液晶に関する研究が盛んに行われている．Chandrasekharら，およびLillyaらの研究グループは，それぞれ独立に2,5-シクロヘキサジエン-1,4-ジオン(p-ベンゾキノン)誘導体2の不安定なカラムナー相について報告している．著者らは，p-ベンゾキノン誘導体が示す酸化-還元等の機能性をディスコチック液晶に取り入れることにより，新たな機能材料の創製が可能となると考えた．そこで，エステル誘導体2に対して，種々のp-ベンゾキノン誘導体4，5，7を合成し，これらの化合物が示す中間相について調べた．安息香酸エステル4は，芳香環とコアが同一平面になっていなかったためか，中間相は確認できなかった．エーテル5bのDSC測定を行ったところ，32 °Cと55 °Cに吸熱ピークが観測された．しかし，液晶相と思われる明確な組織は確認できなかった．一方，アミド誘導体7aを等方性液体から冷却すると樹枝状組織が観測された．この結果は7aがモノトロピー的なColh相をとることを示唆している．","PeriodicalId":19311,"journal":{"name":"Nippon Kagaku Kaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82296063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2002-03-10DOI: 10.1246/NIKKASHI.2002.271
H. Ikuta, Y. Uchimoto, M. Wakihara
{"title":"Crystal Structure Control of Lithium Manganese Spinal Oxides and Their Application to Lithium Secondary Battery","authors":"H. Ikuta, Y. Uchimoto, M. Wakihara","doi":"10.1246/NIKKASHI.2002.271","DOIUrl":"https://doi.org/10.1246/NIKKASHI.2002.271","url":null,"abstract":"","PeriodicalId":19311,"journal":{"name":"Nippon Kagaku Kaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74667351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Effect of Metals Loaded on Activated Carbon on the Removal of NO_2","authors":"T. Shirakashi, Takami Moteki, Tomohiro Abe, T. Tamura, S. Yoshihara","doi":"10.1246/NIKKASHI.2002.421","DOIUrl":"https://doi.org/10.1246/NIKKASHI.2002.421","url":null,"abstract":"Ag，Pt，CuおよびCuOを担持させた活性炭を調製し，これによるNO2除去特性を調べた．活性炭はヤシガラ系のものを用い，金属の担持方法としては，金属イオンを含む溶液に活性炭を入れ，活性炭により直接金属にまで還元する方法および金属錯体として吸着させた後窒素中700 °Cで加熱，還元する方法を用いた．NO2は硝酸鉛の熱分解により発生させ，活性炭を充填したカラムに循環させた．Pt/ACおよびCu/ACを用いた場合，NO2は速やかに除去され，空気中と窒素中でのNO2の除去速度に大きな差は見られなかった．反応ガス中のHNO3，HNO2，NO，NH3はごくわずかであり，NO2はN2まで還元されることが示唆された．また，CuO/ACを用いた場合にもNO2の除去性はCu/ACとほぼ同一であり，Ag/ACによるNO2の除去性は小さかった．NO2除去後の金属の結晶状態をXRDで調べた結果，Ptは金属のピークのみを示した．Cu/ACを用いた場合にはCu2OおよびCuOに酸化された状態も観察され，CuO/ACを用いた場合にはCuおよびCu2Oに還元された状態も存在した．これらのことから，Pt/ACおよびCu/ACはNO2の還元除去に対する有効な触媒であり，Pt，CuあるいはCu2Oは活性炭によるNO2の還元触媒として作用している．","PeriodicalId":19311,"journal":{"name":"Nippon Kagaku Kaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73717684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adsorption behavior of heavy metals on arabica and robusta roasted coffee beans treated in 5 roasting degrees was investigated. The coffee beans residue after extraction with hot water were suspended in aqueous solutions (pH = ca.6.6) containg Cu(II) or Cd(II) and the amount of heavy metal remaining in the solution was determined on an atomic absorption spectrophotometer. Adsorption ratios of Cu(II) were 60.5 and 79.6% for the light and French roasted coffee beans of Indonesia robusta employed as adsorbent, respectively. However, when the roasted coffee beans were washed with distilled water and then air-dried prior adsorption experiments, the adsorption ratios of Cu were 92.2 and 92.6%, respectively and that of Cd was 95.6 and 97.0%. Thus, the heavy metals were almost removed from aqueous solution by use of the roasted coffee beans with washing and drying treatments.
{"title":"コーヒー殻による水中の銅(II)およびカドミウム(II)の捕集除去","authors":"南澤 麿優覽, 中嶋 すぎ子, 友紀 満江, 和江 宮澤, 慶子 上野, 愛 羽鳥, 冴子 宮島, 星野 真希枝, 吉田 章一郎, 信治 高井","doi":"10.1246/NIKKASHI.2002.459","DOIUrl":"https://doi.org/10.1246/NIKKASHI.2002.459","url":null,"abstract":"Adsorption behavior of heavy metals on arabica and robusta roasted coffee beans treated in 5 roasting degrees was investigated. The coffee beans residue after extraction with hot water were suspended in aqueous solutions (pH = ca.6.6) containg Cu(II) or Cd(II) and the amount of heavy metal remaining in the solution was determined on an atomic absorption spectrophotometer. Adsorption ratios of Cu(II) were 60.5 and 79.6% for the light and French roasted coffee beans of Indonesia robusta employed as adsorbent, respectively. However, when the roasted coffee beans were washed with distilled water and then air-dried prior adsorption experiments, the adsorption ratios of Cu were 92.2 and 92.6%, respectively and that of Cd was 95.6 and 97.0%. Thus, the heavy metals were almost removed from aqueous solution by use of the roasted coffee beans with washing and drying treatments.","PeriodicalId":19311,"journal":{"name":"Nippon Kagaku Kaishi","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2002-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77561207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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