研究者詳細 - 崎田　真一

MISC - 崎田　真一

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崎田真一, 黒田龍介, 紅野安彦, 難波徳郎

環境制御 31 ( 31 ) 26 - 31 2009年

記述言語：日本語出版者・発行元：岡山大学環境管理センター

The possibility of material recycling of inorgamic sludge by wet ball milling with distrilled water and an ethylenediaminetetraacetic acid disodium salt dehydrate (EDTA・2Na・2H(2)O)reagent was investigated. The inorganic sludge consisted of 14.1mass% of the heat-treated sludge obtained after drying and heat treatment, 20.1mass% of active carbon, and 65.9mass% of water. The wet ball milling of the heat-treated sludge was performed using a ball pot and balls in air for 40 h at room temperature with the rotational speed fixed at 200rpm. The fractions of Mn, Fe, Ni, Cu, and Zr in the specimens obtained by wet-ball-milling the heat-treated sludge decreased and those of Si and Al increased. Appropriate content of distilled water and weight of the heat-treated sludge for wet ball milling were 150-250 ml and 4.5 g or less, respectively. When the wet ball milling of the heat-treated sludge was perfomed twice,the fractions of Mn, Fe, Ni, Cu, and Zr in the specimen obtained after repeated wet ball milling remarkably decreased and that of Si increased in comparison with those in the specimens wet-ball-milled once. This suggests that the repeat of wet ball milling of the heat-treated sludge leads to a colorless specimen without colored ions such as Mn, Fe, Ni, and Cu.

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その他リンク： http://eprints.lib.okayama-u.ac.jp/42677

湿式ボールミル法を用いた産業廃棄物の再資源化技術の開発

崎田真一

財団法人八雲環境科学振興財団研究レポート集2009 ( 10 ) 88 - 93 2009年

Chemical recycling of inorganic wastes by using phase separation of glass 査読

Tokuro Nanba, Shuhei Mikami, Takuya Imaoka, Shinichi Sakida, Yoshinari Miura

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 116 ( 1350 ) 220 - 223 2008年2月

記述言語：英語出版者・発行元：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

A chemical recycling process using phase separation of glass was applied to a granulated blast furnace slag with high CaO content. Glasses were prepared by adding B2O3 to the slag in order to promote phase separation, and the glasses were heat-treated above glass transition temperature. In the subsequent acid-treatment, however, gelation due to the elution of SiO2 phase containing CaO occurred, not obtaining high SiO2 Solids. Then, pretreatment was introduced to reduce CaO content in slag, where the raw slag was briefly washed in acid. The slag glasses prepared from the pretreated slag were commonly phase-separated by heat-treatment regardless of B2O3 content. After subsequent acid-treatment, colorless insoluble solids were successfully recovered. The end products consist of 70-90 mass% SiO2, and coloring ions such as Mn, Fe and Cr were almost completely removed from the slag glasses. Reutilization as raw materials for glass is expected.

DOI： 10.2109/jcersj2.116.220

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鉛フリー光学ガラスとしてのSnO-B2O3ガラスの光学特性査読

崎田真一, 難波徳郎, 三浦嘉也

環境制御 30 39 - 44 2008年

記述言語：日本語出版者・発行元：岡山大学環境管理センター

The preparation of SnO-B(2)O(3) and SnO-SiO(2) glasses by melting in Ar atomosphere was performed. The prepared SnO-B(2)O(3) glasses were large enough to measure optical properties whereas the vitrification in SnO-SiO(2) system was very difficult. PbO-B(2)O(3) and BiO1.5-B(2)O(3) glasses were also prepared for comparison with SnO-B(2)O(3) glasses. The densities, glass transition temperatures, and optical properties such as refractive indices, dispersion, and transmission spectra of SnO-B(2)O(3), PbO-B(2)O(3), and BiO(1.5)-B(2)O(3) glasses were measured. On the basis of the obtained results, the potential for SnO-B(2)O(3) glasses as lead-free glasses is particularly discussed from the viewpoint of optical properties.

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一般廃棄物高温焼却炉用クロムフリー耐火物の開発

伊賀棒公一, 崎田真一, 紅野安彦, 難波徳郎, 藤田基成, 山口明良

耐火物 60 ( 3 ) 2008年

Optical properties of Er3+-doped tungsten tellurite glass waveguides by Ag+-Na+ ion-exchange 査読

Shinichi Sakida, Tokuro Nanba, Yoshinari Miura

OPTICAL MATERIALS 30 ( 4 ) 586 - 593 2007年12月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

The planar waveguides of 12Na(2)O center dot 35WO(3) center dot 53TeO(2) center dot 1Er(2)O(3) glass (in mol%) were prepared by Ag+-Na+ ion-exchange at 300-360 degrees C for 5-30 h. The effective mode indices and propagation losses of the waveguides were measured at the wavelengths of 473, 632.8, 983.1 and 1548 nm by means of a prism coupler technique. The waveguide depths from glass surface increased with increasing ion-exchange temperature and time. The diffusion parameters such as diffusion coefficient and activation energy were calculated on the basis of an Arrhenius temperature dependence of the diffusion coefficient of Ag+ ions in the ion-exchanged glasses. The propagation losses of the waveguides were 5.04-6.64, 2.70-4.77, 5.44-6.73 and 7.32-8.31 dB/cm in the first half in the propagation distance from 0 to 3.0 cm and 3.52-4.82, 1.92-2.99, 3.78-5.06 and 3.91-5.15 dB/cm in the latter half at 473, 632.8, 983.1 and 1548 nm, respectively. The relationship between the optical properties of the waveguides and the ion-exchange conditions is discussed. (c) 2007 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.optmat.2007.01.010

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Sintering of Al2O3-Cr2O3 powder prepared by sol-gel process 査読

Motonari Fujita, Keisuke Inukai, Shinichi Sakida, Tokuro Nanba, Junji Ommyoji, Akira Yamaguchi, Yoshinari Miura

Zairyo/Journal of the Society of Materials Science, Japan 56 ( 6 ) 526 - 530 2007年6月

記述言語：英語

The sol-gel method was applied to create Al2O 3-Cr2O3 ceramics using aluminum ethylacetoacetate diisopropylate and chromium (III) chloride hexahydrate as starting materials. In the calcination at 600-1200°C it was found that the grains of Cr2O3-rich solid solution grew when they were exposed to the surrounding Al2O3-rich amorphous particles. The composition of the powders obtained by the sol-gel process changed with calcining temperature. Cr2O3-rich solid solutions firstly crystallize at low temperature and the composition of the crystallites changes as the crystals grow and react with the surrounding Al2O 3-rich phases. The final sintered bodies fired under an Ar atmosphere showed higher relative densities as compared with those fired in air. A dense sintered body was not obtained when abnormal grains grew when calcining occurred. © 2007 The Society of Materials Science.

DOI： 10.2472/jsms.56.526

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ガラスの分相現象を利用した高炉水砕スラグの再資源化技術の開発査読

崎田真一, 三上修平, 難波徳郎, 三浦嘉也

環境制御 29 11 - 15 2007年

記述言語：日本語出版者・発行元：岡山大学保健環境センター環境安全部門

A novel recycling process of blast furnace slag was developed in order to obtain colorless silica－rich solids by using phase separation of borosilicate glass. B(2)O(3) was added to blast furnace slag to promote the phase separation. The slag glasses were heat-treated above glass transition temperatures. The slag glass prepared from blast furnace slag gelled after the heat treatment and the subsequent three types of acid treatment. The ratios of SiO(2) component in the gels were 40 - 60mass%. On the other hand, phase separation was observed on the surface of the slag glasses prepared from pre-treated slag by 2.5N HCI after the heat treatment. After soaking in acid, they did not gel and changed to insoluble colorless solids. According to compositional analyses, it was found that the insoluble colorless solids contained 70 - 90mass% SiO(2). No colored ions such as Cr, Mn, and Fe were confirmed in the remaining insolubles by optical absorption measurement. Therefore, the colorless silica-rich solids were successfully obtained in the present process. The end products obtained in the present process are expected as material of glass.

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ガラスの相分離を利用した都市ゴミ溶融スラグのマテリアルリサイクル

今岡卓也, 崎田真一, 難波徳郎, 三浦嘉也

岡山大学環境理工学部研究報告 12 ( 1 ) 161 - 165 2007年

Refractive-index profiles and propagation losses of Er3+-doped tungsten tellurite glass waveguide by Ag+-Na+ ion-exchange 査読

S. Sakida, T. Nanba, Y. Miura

MATERIALS LETTERS 60 ( 28 ) 3413 - 3415 2006年12月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

The planar waveguide of 12Na(2)O-35WO(3)(.)53TeO(2)lEr(2)O(3) glass (in mol%) was prepared by Ag+-Na+ ion-exchange at 330 degrees C for 5 h. The effective mode indices and propagation losses of the waveguide at the wavelengths of 473, 632.8, 983.1 and 1548 nin for TE and TM modes were measured by means of a prism coupler technique. The results were compared with those of a planar waveguide of the tungsten tellurite glass without Er3+ ions. Especially, the propagation losses of ion-exchanged tellurite glass waveguides were estimated for the first time to the best of our knowledge. (c) 2006 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.matlet.2006.03.024

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Structural Change around Si Atoms in P2O5・SiO2 Binary Glasses before and after Annealing by 29Si MAS NMR Spectroscopy 査読

S. Sakida, T. Nanba, Y. Miura

Chem. Lett. 35 ( 11 ) 1268 - 1269 2006年11月

リン酸塩結合材を用いたパッチング耐火物の作業性（可塑性）の低下機構査読

崎田真一, 山本祐一, 難波徳郎, 三浦嘉也, 林徹浩, 山口明良

材料 55 ( 7 ) 670 - 674 2006年7月

SnOベースガラスの鉛代替光学ガラスへの応用の検討査読

崎田真一, 増田紘一, 難波徳郎, 三浦嘉也

環境制御 28 28 - 33 2006年

記述言語：日本語出版者・発行元：岡山大学保健環境センター環境安全部門

The preparation of SnO-SiO(2), SnO-B(2)O(3), and SnO-GeO(2) glasses by melting in air was performed. The prepared SnO-GeO(2) glasses were large enough to measure optical properties whereas the vitrification in SnO-SiO(2) and SnO-B(2)O(3) systems was difficult. PbO-GeO(2) and BiO(1.5)-GeO(2) glasses were also prepared for comparison with SnO-GeO(2) glasses. The densities, glass transition temperatures, and optical properties such as refractive indices, dispersion, and transmission spectra of SnO-GeO(2), PbO-GeO(2), and BiO(1.5)-GeO(2) glasses were measured. On the basis of the results, the potential for SnO-GeO(2) glasses as lead-free glasses is particularly discussed from the viewpoint of optical properties.

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Pr3+,Tm3+イオン添加重金属酸化物ガラスの赤外発光特性

三浦嘉也, 難波徳郎, 山口亮, 崎田真一

岡山大学大学院ベンチャー・ビジネス・ラボラトリー研究年報 2006年

テルライト系ガラスの屈折率の組成依存性

赤嶺宗子, 崎田真一, 難波徳郎, 三浦嘉也

セラミックス基礎科学討論会講演要旨集 44th 2006年

Consideration on the correlation between basicity of oxide glasses and O1s chemical shift in XPS

T Nanba, Y Miura, S Sakida

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 113 ( 1313 ) 44 - 50 2005年1月

記述言語：英語掲載種別：書評論文，書評，文献紹介等出版者・発行元：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

O1s binding energy measured by X-ray photoelectron spectroscopy (XPS) is candidate as a new tool to determine a new scale of Lewis basicity of oxide ions in glass. Some mathematical expressions for the basicity or XPS chemical shift, such as charge parameter and optical basicity, were compared with the experimental O1s binding energy in binary alkali oxide glasses. The expressions so far in use needed some modification in parameters. A new empirical expression introduced in this paper gives a new concept and universal scale of basicity.

DOI： 10.2109/jcersj.113.44

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Tm3+含有重金属酸化物ガラスの光学特性

三浦嘉也, 難波徳郎, 崎田真一, 六車真人

岡山大学大学院ベンチャー・ビジネス・ラボラトリー研究年報 2005年

Bi2O3系ガラスの構造

難波徳郎, 崎田真一, 三浦嘉也

New Glass Vol.20 (No.2), 35-43 2005年

Ag+-Na+イオン交換法によるEr3+ドープテルライトガラス光導波路作製およびその導波特性

崎田真一

岡山大学大学院ベンチャー・ビジネス・ラボラトリー研究年報 2004年

Cd-113 MAS and static NMR study of chlorocadmate glasses

S Sakida, H Nakata, Y Kawamoto

CHEMISTRY LETTERS 32 ( 9 ) 786 - 787 2003年9月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

Cd-113 magic-angle spinning (MAS) and static NMR spectra were measured of fourteen kinds of chlorocadmate glasses to reveal the chlorine coordination environments around Cd2+ in the glasses in detail. The spectra of the glasses suggest that the glass structures are mainly composed of infinite double-chains of edge-shared CdCl6 octahedra, being independent of the CdCl2 content and the kinds of chlorides except for CdCl2. Cd-113 MAS and static NMR spectroscopies enabled us to reveal not only chlorine coordination number of Cd but also linkage manners between CdCl6 octahedra in the glasses.

DOI： 10.1246/cl.2003.786

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