Journal of the Clay Science Society of Japan最新文献_第10页

Claysphere Linking Geo-and Biospheres 连接地球和生物圈的粘土球

Journal of the Clay Science Society of Japan Pub Date : 2003-03-28 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.129

T. Naganuma

引用次数: 0

Soil Clay and Environmental Conservation 土壤粘土与环境保护

Journal of the Clay Science Society of Japan Pub Date : 2003-03-28 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.154

Tadashi Takahashi

{"title":"Soil Clay and Environmental Conservation","authors":"Tadashi Takahashi","doi":"10.11362/JCSSJNENDOKAGAKU1961.42.154","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.42.154","url":null,"abstract":"土壌は無機物と有機物の複合体であり,そこに微生物, 植物,動物が生息し,それらの相互作用のもとに存在している.粘土鉱物は無機物ではあるが,土壌を構成する成分の中では非常に活性に富み,腐植とともにこの土壌の生態系に大きな役割をはたしている.すなわち粘土は, 土壌反応,イオン交換,吸着,固定,緩衝作用などの土壌の化学性質を直接つかさどる.粘土はまた,腐植とともに土壌団粒化を促進し,生命に必要な水分や空気の保持,微生物や動物の居住空間の確保など,土壌の物理的機能にも密接に関連している。このように,土壌の粘土鉱物は土壌生態系の中でもともと環境親和物質として機能している。土壌にはいくつかの種類の粘土鉱物がみられるが,ある特定の粘土が特定の土壌に多く含まれることがある1). 例えば,カオリナイトは安定性の高いケイ酸塩鉱物であり,風化の強く進んだ熱帯の土壌に多く含まれる.表1 に示したように,アメリカ合衆国農務省の分類ではオキシソルやアルティソルの一部がこれにあたる.スメクタ","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128471471","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}

引用次数: 0

Diagenesis and Clay Minerals 成岩作用与粘土矿物

Journal of the Clay Science Society of Japan Pub Date : 2003-03-28 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.167

T. Yoshimura

引用次数: 2

Clay Minerals Occurred in Landslide Areas on Mikabu Green Rocks 米湖绿岩滑坡区粘土矿物的赋存

Journal of the Clay Science Society of Japan Pub Date : 2002-12-31 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.81

M. Miyahara, Yohei Uno, R. Kitagawa

引用次数: 1

Clay Minerals in Marine Sediments 海洋沉积物中的粘土矿物

Journal of the Clay Science Society of Japan Pub Date : 2002-12-31 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.97

S. Aoki

引用次数: 0

La feuille d'or et ses HAKU-UCHIGAMI 金叶和它的白羽神

Journal of the Clay Science Society of Japan Pub Date : 2002-12-31 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.89

Takéo Wada, Noriyuki Takahashi, Mituru Demura, Tougo Kameyama

引用次数: 1

Adsorptions of Fe (II) and Mn (II) Ions on Two Oxides, Silica and Gibbsite 铁(II)和锰(II)离子在二氧化硅和三水铝两种氧化物上的吸附

Journal of the Clay Science Society of Japan Pub Date : 2002-12-31 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.77

K. Saeki, K. Nakagawa, S. Wada

引用次数: 0

Synthesis and Antacid Property of Mg-Fe Layered Double Hydroxide 镁铁层状双氢氧化物的合成及其抗酸性能

Journal of the Clay Science Society of Japan Pub Date : 2002-12-31 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.70

Hidetoshi Hirahara, Y. Sawai, S. Aisawa, Satoshi Takahashi, Y. Umetsu, E. Narita

{"title":"Synthesis and Antacid Property of Mg-Fe Layered Double Hydroxide","authors":"Hidetoshi Hirahara, Y. Sawai, S. Aisawa, Satoshi Takahashi, Y. Umetsu, E. Narita","doi":"10.11362/JCSSJNENDOKAGAKU1961.42.70","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.42.70","url":null,"abstract":"The synthesis of the CO3/Mg-Fe layered double hydroxide (LDH) by a standard coprecipitation method has been investigated together with its antacid property. The LDH crystallinity of the solid product was influenced by the synthesized pH, Fe/(Mg+ Fe) mixed molar ratio and aging time. The solid products have the carbonated LDH structure with the basal spacing, d003, of 7.8 A, in particular the well crystallized CO3/Mg -Fe LDH was obtained at pH 10, Fe/(Mg+ Fe)=0.25 and aging time 5 hours. From the results of XRD and TG-DTA, it was found that lattice constants a and c of the CO3/Mg-Fe LDH obtained at the Fe/(Mg+Fe) mixed molar ratio of 0.17-0.25 range ageered with the Vegard rule, and the temperatures of elimination of interlayer water, dehydration of hydroxide basal layer and decarboxylation of guest anion were shifted by the amount of substituted Fe3+ ion for the LDH basal layer. In the durability experiments of the CO3/Mg-Fe LDH as antacid, the time effecting antacid property for 65-95 min was observed in the CO3/Mg-Fe LDH obtained at the Fe/(Mg+Fe) mixed molar ratio of 0.17-0.25 range. This feature of the CO3/Mg-Fe LDH indicates that it can be used as for the substitute of the CO3/Mg-Al LDH as antacid.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114971345","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}

引用次数: 3

Effect of Grinding on the Hydrothermal Transformation of Sepiolite 磨矿对海泡石热液转化的影响

Journal of the Clay Science Society of Japan Pub Date : 2002-08-24 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.6

T. Mashiko, Takabumi Sakamoto

{"title":"Effect of Grinding on the Hydrothermal Transformation of Sepiolite","authors":"T. Mashiko, Takabumi Sakamoto","doi":"10.11362/JCSSJNENDOKAGAKU1961.42.6","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.42.6","url":null,"abstract":"It is well known that grinding of crystalline material cause a structural degradation and finally produce an amorphous phase. The amorphous phase thus prepared is expected to have a high reactivity under hydrothermal conditions. In the previous study, one of the authors reported that grinding treatment significantly increase the hydrothermal reactivity of talc, and aluminum bearing layer silicates was easily formed from ground talc by the hydrothermal treatment with AlCl3 solution. In the present study, original and well ground sepiolite from Kuzu, which is non-crystalline on an XRD pattern, was treated hydrothermally with Al(NO3)3, NaA102, and NaOH solutions. As a result, in Al(NO3)3 solution, tri -octahedral smectite, di-octahedral smectite, and kaoline mineral are formed successively from both ground and original sepiolite with increasing Al (in solution)/Si (in sepiolite) ratio. In NaA102 and NaOH solution, both sample transformed into trioctahedral smectite and serpentine minerals with increasing the concentration of the solution. The kaolin mineral and the serpentine mineral formed from ground sepiolite are different from those from original sepiolite in the polytype and morphology. These results reveal that the crystallinity of sepiolite is not effective in the reactivity in hydrothermal condition, because the nano-scale nature of sepiolite may dominate the hydrothermal behavior. It is also concluded, however, that the crystallinity of sepiolite has influence on the selection of reaction process in the hydrothermal transformations.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"84 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117336861","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}

引用次数: 0

Surface Microtopographies of Pyrophyllite and Kaolinite Occurred in the Uku Pyrophyllite Deposit 乌库叶蜡岩矿床中叶蜡岩和高岭石的表面显微形貌

Journal of the Clay Science Society of Japan Pub Date : 2002-08-24 DOI: 10.11362/JCSSJNENDOKAGAKU1961.42.15

M. Jige, R. Kitagawa, Noriko Ikemi

引用次数: 0