記述言語：英語   出版者・発行元：公益社団法人日本セラミックス協会  

Porous silica glass was prepared by phase separation of sodium borosilicate glass. The distributions of SiO_4 structural units, Q_n, were examined by ^<29>Si magic-angle spinning (MAS) NMR after each process in a series of acid and thermal treatments. The NMR spectra reveal three distinct peaks due to the presence of a silanol group on the surface of the porous silica glass. However, only a single peak around -110 ppm that originated from a Q_4 unit which lacked any OH groups could be observed after heat treatment at 900℃.

DOI： 10.2109/jcersj.105.700

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記述言語：英語   出版者・発行元：AMER INST PHYSICS  

Hydrogen is produced by generating in-liquid plasma in a conventional microwave oven. A receiving antenna unit consisting of seven copper rods is placed at the bottom of the reactor furnace in the microwave oven. 2.45 GHz microwave in-liquid plasma can be generated at the tips of the electrodes in the microwave oven. When the n-dodecane is decomposed by plasma, 74% pure hydrogen gas can be achieved with this device. The hydrogen generation efficiency for a 750 W magnetron output is estimated to be approximately 56% of that of the electrolysis of water. Also, in this process up to 4 mg/s of solid carbon can be produced at the same time. The present process enables simultaneous production of hydrogen gas and the carbide in the hydrocarbon liquid. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3236575]

DOI： 10.1063/1.3236575

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DOI： 10.1063/1.3236575

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記述言語：英語   出版者・発行元：SPRINGER  

Radio frequency (RF) plasma in water was used for the degradation of methylene blue. The fraction of decomposition of methylene blue and the intensity of the spectral line from OH radical increased with RF power. RF plasma in water also produced hydrogen peroxide. The density of hydrogen peroxide increased with RF power and exposure time. When pure water (300 mL) is exposed to plasma at 310 W for 15 min, density of hydrogen peroxide reaches to 120 mg/L. Methylene blue after exposed to plasma degraded gradually for three weeks. This degradation may be due to chemical processes via hydrogen peroxide and tungsten. The comparison between the experimental and calculated spectral lines of OH radical (A-X) shows that the temperature of the radical is around 3,500 K. Electron density is evaluated to be similar or equal to 3.5 x 10(20) m(-3) from the stark broadening of the H(beta) line.

DOI： 10.1007/s11090-008-9142-2

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記述言語：英語   出版者・発行元：JAPAN SOC APPLIED PHYSICS  

The plasma in water is generated by applying high-frequency (HF) irradiation of 27.12 MHz or microwave (MW) radiation of 2.45 GHz from an electrode. The electrode is heated by joule heating by the HF or MW irradiation, and vapor bubbles are generated simultaneously. The plasma is then ignited inside the bubbles on the electrode. The glow discharge plasma can be maintained in spite of atmospheric pressure due to the cooling effect of the liquid itself. The electron temperature of the plasma generated by the 27.12 MHz radiation is higher than that generated by the 2.45 GHz radiation. (C) 2008 The Japan Society of Applied Physics.

DOI： 10.1143/APEX.1.046002

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記述言語：英語   出版者・発行元：AMER INST PHYSICS  

An experiment was conducted for generating high-frequency plasma in supercritical carbon dioxide; it is expected to have the potential for applications in various types of practical processes. It was successfully generated at 6-20 MPa using electrodes mounted in a supercritical cell with a gap of 1 mm. Emission spectra were then measured to investigate the physical properties of supercritical carbon dioxide plasma. The results indicated that while the emission spectra for carbon dioxide and carbon monoxide could be mainly obtained at a low pressure, the emission spectra for atomic oxygen could be obtained in the supercritical state, which increased with the pressure. The temperature of the plasma in supercritical state was estimated to be approximately 6000-7000 K on the assumption of local thermodynamic equilibrium and the calculation results of thermal equilibrium composition in this state showed the increase of atomic oxygen by the decomposition of CO2. (C) 2007 American Institute of Physics.

DOI： 10.1063/1.2724240

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記述言語：英語  

DOI： 10.1063/1.2724240

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DOI： 10.2116/bunsekikagaku.56.511

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DOI： 10.2116/bunsekikagaku.56.511

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The generation of microwave plasma in liquid with vapor bubbles has been achieved and will soon be applied to high-speed chemical vapor deposition. Vapor bubbles are induced from an electrode by heating. The deposition rate of diamondlike carbon films depends on the pressure and the power of the microwave supply. Polycrystalline silicon carbide is synthesized on a silicon substrate in a mixture of n -dodecane and silicone oil. The dispersion of water droplets in liquid creates many pores on the silicon carbide films. The synthesis of carbon nanotubes can be achieved in liquid benzene. © 2006 American Institute of Physics.

DOI： 10.1063/1.2208167

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記述言語：英語   出版者・発行元：AMER INST PHYSICS  

The generation of microwave plasma in liquid with vapor bubbles has been achieved and will soon be applied to high-speed chemical vapor deposition. Vapor bubbles are induced from an electrode by heating. The deposition rate of diamondlike carbon films depends on the pressure and the power of the microwave supply. Polycrystalline silicon carbide is synthesized on a silicon substrate in a mixture of n-dodecane and silicone oil. The dispersion of water droplets in liquid creates many pores on the silicon carbide films. The synthesis of carbon nanotubes can be achieved in liquid benzene. (c) 2006 American Institute of Physics.

DOI： 10.1063/1.2208167

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DOI： 10.1063/1.2210448

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DOI： 10.2109/jcersj.112.110

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記述言語：英語  

DOI： 10.1016/j.jnoncrysol.2003.08.086

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記述言語：日本語   出版者・発行元：公益社団法人 日本工学教育協会  

愛媛大学工学部では大学入学時の学生の基礎学力の低下と自発的な学習態度の欠如が問題になっている.学生の学力低下は,学生の基本的な自然現象に対する経験的知識や簡単な物作りの経験不足と,高等学校までの受身的な学習態度から引き起こされたものと分析し,大学初年次生対象にこれらを補完する体験参加型の実験科目「基礎科学実験」を新たに開発した.平成13年度に試行し,平成14年度には工学部6学科中4学科340名の学生が受講する.アンケート調査では,物作りの楽しさと,自らの体験として自然現象を理解したことが示され,大学教育への動機付けと,工学の基本である物作りに対する興味,さらに自発性の向上に効果が認められた.

DOI： 10.4307/jsee.51.2_31

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記述言語：英語  

DOI： 10.2109/jcersj.111.723

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

Simple binary alkali borate glasses containing sulfur were prepared by conventional melt quench method and chemical bonding states of sulfur were investigated by means of ultraviolet-visible (UV-VIS) spectroscopy, X-ray photoelectron spectroscopy (XPS) and B-11 MAS-NMR measurement. The glass samples were colored and colors changed with glass composition and alkali species. The blue coloration by absorption at around 585 nm was explained with the formation of S-3(-) anion spices. On the other hand, the glass samples colored in brown or red showed absorption spectrum around 450 nm because of the formation of S-x(2-) anion (polysulfide ion) speices. S2p binding energy was around 161 eV, and this values was lower than that of orthorhombic crystalline sulfur. From these results, it was suggested that sulfur was present with a negative charge in R2S-B2O3 glasses. In colored reddish brown regions, the formation of non-bridging oxygen from O1s spectrum in the glasses was noticed. Therefore, it is suggested that the formation of nonbridging oxygen in glasses largely effect the variation of sample coloration. The estimated fraction of four-coordinated boron from B-11 MAS-NMR measurment was nearly equal to oxide glass systems. As a result, it is assumed that the effect of sulfur on the conversion of boron coordinate number is small because of a low solubility of sulfur in this glass system.

DOI： 10.2109/jcersj.110.576

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DOI： 10.2109/jcersj.110.576

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DOI： 10.1016/S0272-8842(00)00039-0

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DOI： 10.2116/analsci.17.45

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DOI： 10.2116/analsci.17.45

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記述言語：英語   出版者・発行元：Elsevier Science Ltd  

ZnO doped silica gels were synthesized by the hydrolysis and condensation of complex solution tetraethyl orthosilicate (TEOS) and zinc acetate (Zn(Ac)2) and heating at 500 °C in the air. For conversion to ZnS doped gels, they were exposed to H2S gas at appropriate temperatures. The crystal size of ZnS determined by the width of X-ray diffraction pattern and direct transmission electron micrograph (TEM) grows from 1 to 4 nm with an increase of reaction temperature with H2S gas. The edge energies of optical absorption shifted to higher energy side compared with that of bulk crystal and reciprocally increased in proportional to the square of the crystal size. The peak energy of fluorescence spectra also shifted to lower energy side with an increase of reaction temperature exposing to the H2S gas. Thus, the quantum size effect could be found for ZnS microcrystals in the gels.

DOI： 10.1016/S0272-8842(00)00039-0

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記述言語：英語   出版者・発行元：ELSEVIER SCIENCE BV  

The B-11. Al-27 Si-29 and P-31 magic angle spinning (MAS) NMR spectra of MO-P2O5, MO SiO2-P2O5 and MO(M'O-2)-SiO2-Al2O3-B2O3 (M = Mg, Ca, Sr and Ba, M' = Na) glasses were examined, in binary MO-P2O5 (M = Ca and Mg) glasses, the distributions of the phosphate sites, P(Q(n)), call be expressed by a theoretical prediction that P2O5 reacts quantitatively with MO. In the ternary 0.30MO-0.05SiO(2)-0.65P(2)O(5) glasses, the 6-coordinated silicon sites were detected. whose population increases in the order of MgO &lt; CaO &lt; SrO=BaO. In xCaO=0.05SiO(2) (0.95 - x)P2O5 glasses, its population increases with an increase in f (= ([P2O5] - [MO] - [B2O3] - [Na2O])/[SiO2]) and has maximum at f = 9. The signal due to the 5-coordinated silicon atoms is also observed when x is smaller than 0.45. When three network-forming oxides such as SiO2, Al2O3 and B2O3 coexist, Al2O3 reacts preferably with MO. The populations of 4-coordinated boron atoms, N-4, are expressed well with r/(1 - r), when r = ([Na2O] - [Al2O3])/([Na2O] - [Al2O3] + [B2O3]). The correlation of the Raman signal at 1210 and 1350 cm (1) with the NMR signal of Si(Q(6)) at -215 ppm is also seen. (C) 2000 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0022-3093(00)00056-9

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記述言語：英語   出版者・発行元：ELSEVIER SCIENCE BV  

The Si-29, P-31 and B-11 magic angle spinning (MAS) NMR spectra of 30Na(2)O-5SiO(2)-65[(1 - x)P2O5-xB(2)O(3)] glasses were examined together with Raman and IR data. A correlation of the Raman signal at 1200 cm(-1) or IR signal at 660 cm(-1) with the Si-29 NMR around -215 ppm is seen. The 6-coordinated silicon atoms are observed in glasses when x is smaller than 0.250. The 3-coordinated boron atoms begin to appear in glasses with x &gt; 0.500. It is assumed that the phosphate species were made up of six types: O=P-O-3/2(P), O=P-(ONa)O-2/2(P), (NaO)-P-O-3/2(T), (NaO)(2)-P O-2/2(T), (NaO)(3)-P-O-1/2(T) and P-O-4/2(T), where O is bridging oxygen and T is either B, P or Si. The distribution curves derived from the deconvolution of the spectra by component signal of each phosphate and borate species agree with those calculated using species with different [Na2O]/[P2O5] ratios when P2O5 reacts with Na2O and B2O3 preferably. (C) 1999 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0022-3093(99)00241-0

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記述言語：英語  

DOI： 10.1016/S0022-3093(99)00241-0

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DOI： 10.2116/bunsekikagaku.48.205

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記述言語：日本語   出版者・発行元：公益社団法人日本セラミックス協会  

Sn^<4+>-Sn^<2+>redox in binary alkali silicate melts was studied by means of differential pulse voltammetry. The half-wave potential, E_<1/2> of the reduction of Sn^<4+> to Sn^<2+> shifts toward the negative with changing the alkali metal ions from Li^+ through Na^+, K^+ and Cs^+, at a fixed concentration for each alkali metal oxide. Conversely, E_<1/2> shifts to the positive with an increase in the content of each of the alkali oxide. This tendency for Sn^<4+>-S2^<2+> redox was different from those of Sb^<5+>-Sb^<3>+ and Cr^<6+>-Cr^<3+> redox. The presence of Sb^<5+> and Cr^<6+> result in a strong acid, which leads to E_<1/2> shift to the negative with an increase in basicity. These results for Sn ions can be interpreted in terms of complex formations of Sn^<4+> and Sn^<2+> in which the coordination numbers of the oxide ion for both ions do not differ significantly and their equilibrium constants for complex formation depend largely on the alkali species.

DOI： 10.2109/jcersj.107.385

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00060359551?from=CiNii

DOI： 10.2109/jcersj.107.385

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DOI： 10.2109/jcersj.107.895

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DOI： 10.2109/jcersj.107.895

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記述言語：日本語  

DOI： 10.2109/jcersj.106.1184

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

The Sn4+ - Sn2+ equilibrium in binary sodium borate melts was studied by means of differential pulse voltammetry. The half-wave potentials in the reduction of Sn4+ to Sn2+ shift to the negative with an increase in Na2O content and a decrease in temperature. These results indicate that the population of Sn4+ increases with an increase in basicity. A linear relation between log r(r= [Sn2+]/[Sn4+]) and optical basicities was observed. Log r was also found to depend linearly on thermodynamic basicity, such as -log alpha(Na2O) where alpha(Na2O) denotes the activity of Na2O in melts.

DOI： 10.2109/jcersj.106.724

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

The Si-29 and P-31 nuclear magnetic resonance (NMR) chemical shifts and the Q(n) distribution in ternary sodium phosphosilicate glasses were examined. In the NaPO3-SiO2 glasses, only the Si(Q(4)) unit from SiO2 and the P(Q(2)) unit from NaPO3 are observed. When the P2O5 content increases at fixed mole fractions of SiO2 equal to 0.1 and 0.05, the 6-coordinated silicon atoms appear. The presence of 6-coordinated silicon atoms is expected in glasses where the [P2O5]/[Na2O] composition ratio is greater than unity. Their appearances can be understood in terms of the relative acidic strength of SiO2 and P2O5. The profile of Raman spectra changes appreciably due to the formation of 6-coordinated silicon atoms.

DOI： 10.2109/jcersj.106.539

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記述言語：日本語  

DOI： 10.2109/jcersj.106.150

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DOI： 10.1016/S0022-3093(97)00442-0

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DOI： 10.1016/S0022-3093(97)00442-0

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

Porous silica glass was prepared by phase separation of sodium borosilicate glass. The distributions of SiO4 structural units, Q(n), were examined by Si-29 magic-angle spinning (MAS) NMR after each process in a series of acid and thermal treatments. The NMR spectra reveal three distinct peaks due to the presence of a silanol group on the surface of the porous silica glass. However, only a single peak around -110 ppm that originated from a Q(4) unit which lacked any OH groups could be observed after heat treatment at 900 degrees C.

DOI： 10.2109/jcersj.105.700

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記述言語：日本語  

DOI： 10.2109/jcersj.105.335

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記述言語：英語   出版者・発行元：ELSEVIER SCIENCE BV  

An electrochemical study of antimony ions doped in sodium borate and silicate glass melts was investigated by differential pulse voltammetry at various temperatures, by which Sb5+-Sb3+ redox reactions were observed. The half wave potentials for reduction of Sb5+ to Sb3+ shifted toward negative values with increasing Na2O content of the glass-forming liquids and with decreasing temperature. Substitution of Na2O by CaO in sodium silicate liquids shifted the half wave potential to the positive side. These results correspond to an increase of the content of pentavalent antimony ions with an increase of the basicity of the glass-forming liquids.

DOI： 10.1016/0022-3093(96)00190-1

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記述言語：英語   出版者・発行元：JAPAN SOC ANALYTICAL CHEMISTRY  

Dispersed porous spherical silica particles were prepared by a sol-gel process from solutions of tetramethoxysilane (TMOS), polyethyleneglycol (PEG), H2O and organic solvent in W/O (water in oil phase) emulsions. The interconnected pores can be made by eliminating PEG from gel bodies. Such PEG originates by phase separation between the PEG and the polymerizing silica in common solvents. Microstructures of the particles are affected by the compositions of the starting solutions. The pore diameter increases with an increase in molecular weight of PEG when the molar ratio of PEG as monomer unit to TMOS is fixed to 0.3. The pore diameter decreases and specific surface area increases with an increase in the content of PEG having molecular weight of 50000 when the [PEG]/[TMOS] molar ratio is greater than 0.3. The pore diameter decreases by use of basic solvents such as N,N-dimethylformamide (DMF) and formamide (FA) instead of methanol.

DOI： 10.2116/analsci.10.737

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DOI： 10.2109/jcersj.102.419

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記述言語：英語   掲載種別：記事・総説・解説・論説等（学術雑誌）   出版者・発行元：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI  

Spherical porous silica glasses whose average diameter is 40 mum are synthesized by the sol-gel process in W/O emulsions and a successive thermal treatment. The interconnected pore structure was seen in the particles. The pore size can be controlled by changing temperature of thermal treatment. The presence of residual carbons can be avoided by decreasing unreacted alkoxides with increasing water content of the initial solution in the sol-gel process.

DOI： 10.2109/jcersj.101.1180

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記述言語：英語   掲載種別：記事・総説・解説・論説等（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

The optical resolutions of amino acids and mandelic acid (MA) are done by complexation with copper(II). The optical purity of MA is the best when phenylalanine is used, i.e. 81%, and phenylglycine (PG) is well resolved by using L-MA with the optical purity of 74%. These results are interpreted in terms of the optical absorption energies of the copper(II) complexes in aqueous solution.

DOI： 10.1246/bcsj.66.2764

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DOI： 10.1246/bcsj.66.2764

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DOI： 10.2116/bunsekikagaku.42.12_811

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DOI： 10.2109/jcersj.101.500

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DOI： 10.2116/analsci.9.545

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DOI： 10.2116/analsci.9.545

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記述言語：英語   出版者・発行元：CHEMICAL SOC JAPAN  

The optical resolutions of phenylalanine and mandelic acid were performed by complex formation with Cu2+. D- and L-mandelic acids were completely resolved by forming a complex with L-phenylalanine, while the maximum optical purity of D- and L-phenylalanine by using D-mandelic acid was about 65%. The mole ratio of Cu2+ to phenylalanine and/or mandelic acid in the complexes was 0.5. These results were interpreted in terms of the relative stability of the complexes, i.e., the optical absorption energies in the aqueous media.

DOI： 10.1246/bcsj.65.3149

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記述言語：英語   出版者・発行元：JAPAN SOC ANALYTICAL CHEM  

The ion flotation of rare-earth and another fifteen metal ions was investigated using octadecyliminobismethylenebisphosphonic acid (OIMBP) as an anionic surfactant having the ability to form complexes with metal ions. The efficiency of flotation was greater than that with dodecyliminobismethylenebisphosphonic acid (DIMBP) due to its low pK(a1) value, as well as the hydrophobic property of the alkyl chain of OIMBP. The rare-earth ions were classified into three groups according to their flotation behavior. A successive flotation procedure used to separate rare-earth ions was then proposed.

DOI： 10.2116/analsci.8.247

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記述言語：英語   出版者・発行元：JAPAN SOC ANALYTICAL CHEM  

The flotation of metal ions was investigated using diphenyl- and diethyl dithiophosphoric acids. From their flotation behavior, the metal ions were classified into three groups. The ions of first group [Au(III), Pd(II), Sb(III), In(III), Cd(II), Bi(III), Cu(II) and Pb(II)] floated effectively under acidic conditions. The maximum yields of the ions of second group [Zn(II), Co(II) and Ni(II)] appeared at around pH = 10. On the other hand, the floatability of ions belonging to the third group [Fe(III), Ga(III), Cr(III), Cr(VI), Ti(TV), Hf(IV), Al(III) and U(VI)] was lower than those of the first and second groups. These results could be fairly well understood in terms of HSAB (hard and soft acids and bases) prediction.

DOI： 10.2116/analsci.8.251

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記述言語：日本語   出版者・発行元：公益社団法人日本セラミックス協会  

Silica-gel particles were synthesized by the sol-gel method in W/O emulsion. Preparation conditions were studied for controlling the particle diameter of the silica-gel, i.e., reaction temperature, agitation speed, the value of hydrophile-lipophile-balance of surfactants, and the nature of reaction vessel. Properties of the silica-gel were determined by the scanning electron microscopic method, particle diameter distribution, specific surface area, and pore size distribution. The particle diameter of the silica-gel was about 5-15 μm. The silica-gel was applied to packing materials for high-performance liquid chromatography (HPLC) after modifying the surface of the silica-gel with octadecyl group. The amino acids and aromatic compounds were successfully separated and the quantitative analysis of phenylalanine could thoroughly be performed.

DOI： 10.2109/jcersj.100.1444

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00370907725?from=CiNii

記述言語：英語   掲載種別：記事・総説・解説・論説等（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

From the polarographic behavior of copper (II), lead(II), cadmium(II), and manganese(II) in aqueous glycine solutions at an ionic strength of 0.4 mol dm-3 adjusted with sodium perchorate, the species of the metal complexes and their stability constants were determined.

DOI： 10.1246/bcsj.64.697

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DOI： 10.1246/nikkashi.1991.168

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記述言語：英語   掲載種別：記事・総説・解説・論説等（学術雑誌）   出版者・発行元：JAPAN SOC ANALYTICAL CHEMISTRY  

DOI： 10.2116/analsci.6.783

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DOI： 10.1246/nikkashi.1990.119

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DOI： 10.1246/nikkashi.1989.697

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DOI： 10.2116/bunsekikagaku.38.21

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DOI： 10.1246/nikkashi.1989.2035

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DOI： 10.2116/bunsekikagaku.38.10_537

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DOI： 10.1246/nikkashi.1989.1859

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DOI： 10.1246/nikkashi.1988.1017

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DOI： 10.11457/swsj1965.42.186

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DOI： 10.2116/bunsekikagaku.36.12_825

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DOI： 10.2116/bunsekikagaku.36.6_386

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DOI： 10.1246/nikkashi.1987.827

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DOI： 10.2116/bunsekikagaku.35.12_977

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記述言語：日本語   出版者・発行元：日本海水学会  

海水4<I>l</I>から, 鉄共沈浮選・炭酸アンモニウム抽出・イオン浮選により, 分離されたスカム中の金属は, ウランの11.5μgに対して, 共沈剤の鉄が7.4倍, モリブデンが0.3倍, 亜鉛が0.1倍以下で, ウランがかなり選択的に分離濃縮されることが判明した.

DOI： 10.11457/swsj1965.40.95

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その他リンク： https://jlc.jst.go.jp/DN/JALC/10016679695?from=CiNii

工学部 / 専門教育科目

理工学研究科（博士前期課程2006〜）

工学部 / 専門教育科目

工学部 / 専門教育科目

理工学研究科（博士前期課程2006〜）

理工学研究科（博士前期課程2006〜）

工学部 / 専門教育科目