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Occurrences and Mineralogical Properties of Long-fibrous Palygorskite from Guizhou Province, China 贵州长纤维型坡缕石的赋存状态及矿物学特征
Journal of the Clay Science Society of Japan Pub Date : 2006-05-29 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.200
Takabumi Sakamoto, Takatsugu Ushirouchi, M. Jige, T. Ando
{"title":"Occurrences and Mineralogical Properties of Long-fibrous Palygorskite from Guizhou Province, China","authors":"Takabumi Sakamoto, Takatsugu Ushirouchi, M. Jige, T. Ando","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.200","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.200","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129083448","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: 4
Interaction between the Components in PVA and Zeolite Y Composite 聚乙烯醇与Y型沸石复合材料组分间的相互作用
Journal of the Clay Science Society of Japan Pub Date : 2006-05-29 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.176
Masato Yoshida, Y. Goto
{"title":"Interaction between the Components in PVA and Zeolite Y Composite","authors":"Masato Yoshida, Y. Goto","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.176","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.176","url":null,"abstract":"A fine particle of zeolite Y was synthesized hydrothermally in the presence of poly (vinyl alcohol) (PVA) to prepare the zeolite-PVA composite. Studies on the morphological structure of the composite and the interaction forces arising between the two components were carried out by using SEM, FT-IR, X-ray diffraction and BET methods. No extractable homopolymer was found by a repeated extracting with water from the zeolite composites consisting of the polymer in the concentration range from 8 to 26%, but from the 32% polymer content composite, an extractable homopolymer amounting to 4% of the total amount of polymer added to the initial reacting system was also found. The specific surface area and the pore volume of zeolite-PVA composites were significantly decreased with increase of the polymer content. The decreased amounts of both values reached to about 42% at the polymer content of 26%. A similar behavior was also observed even for the blend materials of zeolite and PVA, but only 24% of micropore in the intact zeolite was shielded at the same concentration of the component as described in the above composite. Results obtained by SEM and difference spectrum of FT-IR spectra of the respective components showed that in the composites polymer chains dispersed molecularly in part and hydrogen bonds formed between crystal surface of zeolite and hydroxyl groups of polymer, and further that in blends both of a phase separated polymer and a hydrogen bonded and stabilized polymer on zeolite surface were involved. A structure model of zeolite-PVA composite was proposed and the relationship between the stability of polymer chains in composite and the ratio of the length of polymer chains, L to the thickness of polymer phase on the surface of zeolite particles, 4 has been discussed.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117333691","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
Reconstruction of Paleoclimate Recorded in Clay Minerals 粘土矿物记录的古气候重建
Journal of the Clay Science Society of Japan Pub Date : 2006-05-29 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.211
Y. Kuwahara
{"title":"Reconstruction of Paleoclimate Recorded in Clay Minerals","authors":"Y. Kuwahara","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.211","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.211","url":null,"abstract":"近年,地 球の古気候変動,特 に,第 四紀 における気候 変動の復元に関する研究は,世 界中で活発に進められて います。古気候 ・古環境変動の復元には,様 々な指標が 用いられています。例えば,氷 床量変動に関係する氷床 コアの酸素同位体比,海 水温度に関係する有孔虫殻の酸 素 ・炭素同位体比やMg/Ca比,気 候の寒暖 ・乾湿変動 を復元す る花粉分析,湖 水位変動に有効な珪藻分析など が挙げられ ます。その中で,粘 土鉱物 もまた,例 えば, 乾燥―湿潤に関する気候変動の有力な指標 として用いら れてきました。 粘土鉱物の古気候 ・古環境変動の復元への応用 とそれ までの結果をまとめたChamley(1989)は,第 四紀堆 積物中の粘土鉱物を気候変動の指標 として用い古気候の 情報 を系統的に解読 し始めたのは1960年 代にはいってか ら,と 述べています。例えば,メ キシコ湾の堆積物中の 粘土鉱物分析から,氷 期にイライ トと緑泥石の量が増加 するのに対 し間氷期にはスメクタイ トとカオリン鉱物の 量が増加するという報告,地 中海のピス トン ・コア堆積 物中の粘土鉱物分析か らは,イ ライ トの結晶度指標やス メクタイ ト量の変動が温かい海水を好む浮遊性有孔虫量 な どの指標の変動 と調和する とい う報告な どがあ りま す。日本では,1970年 代に琵琶湖の泥質堆積物 に含まれ る粘土鉱物や関連する鉱物の分析が行われています. 粘土鉱物を古気候 ・古環境変動の指標 として用いる場 合,そ の手法は現在 まであま り変 わっていないようで す。簡単に言えば,鉱 物の風化 ・加水分解作用の進行度 を,変 質鉱物の種類や量の変動で追跡 した り,あ るいは 層状ケイ酸塩鉱物の結晶度,特 にKubler indexと 呼ば れるイライ トの結晶度指標で見積もることで,古 気候 ・ 古環境変動を復元 しています。一方で,粘 土鉱物か ら古 気候 ・古環境変動 を復元する際には,注 意 しなければな らない多 くの事項があることも指摘されています。 ここ では,古 気候指標 としての粘土鉱物の長所 と問題点,指 標の種類などを簡単に紹介 し,実 際の研究例 として,筆 者が共同研究者の一人 として参加 している古カ トマンズ 湖ボー リングプロジェク トについて紹介します。","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129055261","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
Occurrences and Mineralogical Properties of Fibrous Sepiolites from Henan and Hebei Province, China 河南和河北纤维状海泡石的赋存状态和矿物学性质
Journal of the Clay Science Society of Japan Pub Date : 2006-05-29 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.188
Takabumi Sakamoto, H. Mito, A. Yamazaki, M. Jige
{"title":"Occurrences and Mineralogical Properties of Fibrous Sepiolites from Henan and Hebei Province, China","authors":"Takabumi Sakamoto, H. Mito, A. Yamazaki, M. Jige","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.188","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.188","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121399500","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
Synthesis and Applications of Hydrotalcites 水滑石的合成及应用
Journal of the Clay Science Society of Japan Pub Date : 2006-03-06 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.102
T. Hibino
{"title":"Synthesis and Applications of Hydrotalcites","authors":"T. Hibino","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.102","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.102","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128957746","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: 4
A Mineralogical Consideration on Unusual Cracking of Concrete Structures 混凝土结构异常开裂的矿物学研究
Journal of the Clay Science Society of Japan Pub Date : 2006-03-06 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.75
A. Maru
{"title":"A Mineralogical Consideration on Unusual Cracking of Concrete Structures","authors":"A. Maru","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.75","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.75","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"31 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114013950","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
Adsorption Sequence of Heavy Metal Divalent Ions on Silica 重金属二价离子在二氧化硅上的吸附顺序
Journal of the Clay Science Society of Japan Pub Date : 2006-03-06 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.90
K. Saeki
{"title":"Adsorption Sequence of Heavy Metal Divalent Ions on Silica","authors":"K. Saeki","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.90","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.90","url":null,"abstract":"In order to understand the adsorptive selectivities of heavy metal species on constituents of soil, adsorptions of heavy metal ions (Cd2+, Co2+, Cu2+, Ni2+,Pb2+and Zn2+) on a variable charge material, silica which have a surface functional group, Si-OH, were investigated as a function of the solution pH,. The comparative sorption study with Ca2+ were also carried out in the similar manners. The adsorptive affinities of the divalent metal ions on silica were numbered with intrinsic surface complexation constants (Km1 (int)) calculated approximately from the adsorptive data using a constant capacitance model. Experiments of Cd and Pb adsorptions were carried out in a 0.1 mol L-1 (M) NaNO3 background solution because a chemical speciation model, SOILCHEM estimated that each proportion of free ions of the metals would be low in a 0.1 M NaC1 background solution. The other metal' s adsorption experiments used a 0.1 M NaC1 background solution. The higher pH the suspension raised, the more heavy metal ions were adsorbed. The adsorptions of the heavy metals increased rapidly from 0 to 100 % in narrow pH range (about 2 pH units). The heavy metal ions differed from Ca2+ in their great adsorptions at higher pH. Judging from the Km' (int) of each divalent metal ion, the selective order for the metal adsorption by silica was Pb > Cu > Zn > Ni > Cd > Co >> Ca. In addition of the data for Fe2+ and Mn2+ in my previous study (Saeki, 2004), the order of the nine metals was Pb > Cu > Fe > Zn > Ni > Cd > Mn > Co >> Ca.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115017556","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
Morphology Control of Clay Mineral Supported Metallocene Catalysts 黏土矿物负载茂金属催化剂的形态控制
Journal of the Clay Science Society of Japan Pub Date : 2006-03-06 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.95
T. Sagae
{"title":"Morphology Control of Clay Mineral Supported Metallocene Catalysts","authors":"T. Sagae","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.95","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.95","url":null,"abstract":"It is effective for saving energy to develop a polypropylene manufacturing technology without a pelletizing step. Novel clay mineral supported metallocene catalyst technologies to produce PP powders having good morphology and large particle size which can be handled like conventional pellets were developed. Producing technologies for catalyst supports using montmorillonite with large particle size and narrow particle size distribution appropriate for the production of large particle size PP powders were developed. Polymerization technologies for large particle size PP powders utilizing the catalysts mentioned above were developed, and powders with targeted size and shape could be obtained. key words: montmorillonite, polypropylene, metallocene catalyst, polymerization","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133964350","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
Removal of Arsenate and Arsenite from Aqueous Solutions by Mg-Al Layered Double Hydroxide 镁铝层状双氢氧化物去除水溶液中的砷酸盐和亚砷酸盐
Journal of the Clay Science Society of Japan Pub Date : 2005-11-11 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.6
Hidetoshi Hirahara, S. Aisawa, H. Sato, Satoshi Takahashi, Y. Umetsu, E. Narita
{"title":"Removal of Arsenate and Arsenite from Aqueous Solutions by Mg-Al Layered Double Hydroxide","authors":"Hidetoshi Hirahara, S. Aisawa, H. Sato, Satoshi Takahashi, Y. Umetsu, E. Narita","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.6","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.6","url":null,"abstract":"","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133837701","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: 2
Adsorptive Properties of Organically Modified Smectites Containing Aromatic Rings 含芳香环的有机改性蒙脱石的吸附性能
Journal of the Clay Science Society of Japan Pub Date : 2005-11-11 DOI: 10.11362/JCSSJNENDOKAGAKU1961.45.19
Tomohiko Okada, M. Ogawa
{"title":"Adsorptive Properties of Organically Modified Smectites Containing Aromatic Rings","authors":"Tomohiko Okada, M. Ogawa","doi":"10.11362/JCSSJNENDOKAGAKU1961.45.19","DOIUrl":"https://doi.org/10.11362/JCSSJNENDOKAGAKU1961.45.19","url":null,"abstract":"Recent studies on the adsorptive properties of smectites modified with organic cations containing aromatic rings are reviewed. The interactions (between aromatic rings of the organic cations and those of the organic molecules and between surface of smectites and aromatic rings of organic molecules) have been shown to affect the adsorption of nonionic aromatic compounds from aqueous solutions. The impartment of additional functions to adsorbents such as slow release of herbicides and the detection of nonionic aromatic compounds in water by absorption/photoluminescence in the visible wavelength region has been conducted.","PeriodicalId":164792,"journal":{"name":"Journal of the Clay Science Society of Japan","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128000327","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
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