研究者詳細 - 日比野　高士

論文 - 日比野　高士

分割表示 415 件中 381 - 400 件目／全件表示 >>

Simplification of solid oxide fuel cell system using partial oxidation of methane 査読有り

Takashi Hibino, Hiroyasu Iwahara

Chemistry Letters 頁： 1131-1134 1993年

Electrochemical methane coupling using protonic conductors 査読有り

Satoshi Hamakawa, Takashi Hibino, Hiroyasu Iwahara

Journal of the Electrochemical Society 140 巻頁： 459-462 1993年

CO2 sensors using BaCeO3-based ceramics 査読有り

Takashi Hibino, Hiroyasu Iwahara

Sensors and Actuators B 13-14 巻頁： 483-485 1993年

固体電解質をメンブレンリアクターに用いたエタンの脱水素査読有り

日比野高士、浜川　聡、岩原弘育

日本化学会誌 3 巻頁： 238-242 1993年

Dehydrogenation of Ethane Using Solid Electrolytes as Membrane Reactor 査読有り

Hibino T., Hamakawa S., Iwahara H.

Nippon Kagaku Kaishi 1993 巻 ( 3 ) 頁： 238 - 242 1993年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Nippon Kagaku Kaishi

The membrane reactors using three kinds of ionic conductors have been constructed in order to control the oxidative dehydrogenation of ethane electrochemically (Fig. 1). SrCe0.95. Yb0.05O3_a, Yttria-stabilized zirconia (YSZ) and BaCe0.9Y0.1O3-a were employed as protonic, oxide ionic and their mixed ionic conductors, respectively. When ethane and air were introduced at 700 °C into the anode and the cathode, respectively, and the direct current was passed through the reactor, the formation rate of ethylene became larger as the current density increased in all the reactors (Fig. 4). From the measurement of the anodic potential, one can speculate that the activation of ethane is based on the decrease in partial pressure of hydrogen in the pore of the anode (Fig. 5). The current efficiency for the formation of ethylene decreased in the order of SrCe0.95Yb0.05O3_a, BaCe0.9Y0.1 O3-aand YSZ (Table 1). This order can be explained by the thermal energy generated by changing the entropy of proton in the anodic reaction (Fig. 6). On the other hand, the formation rate of carbon dioxide increased with increasing the basicity of ionic conductors (Table 1). © 1993, The Chemical Society of Japan. All rights reserved.

DOI： 10.1246/nikkashi.1993.238

Scopus

Electrochemical Methane Coupling Using Protonic Conductors 査読有り

Hamakawa S., Hibino T., Iwahara H.

Journal of the Electrochemical Society 140 巻 ( 2 ) 頁： 459 - 462 1993年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of the Electrochemical Society

Coupling of methane was performed using SrCe0.95Ybo.o503-a ceramic as a membrane reactor at 1173 K. The electrochemical cell used was Ag/SrCe0.95Yb005O3_a/Ag. On introducing methane and Ar into the anode and the cathode, respectively, and on passing the direct current through the cell, formation rates of C2-compounds increased from 0.23 to 0.52 mmol min-1 cm-2. From themeasurement of the polarization characteristic, the partial pressure of hydrogen in theporous silver at the anode was found to be reduced by the electrochemical hydrogen pump. In addition, using a mixed conduction (protonic and p-type electronic conduction) of this ceramic, formation rates of C2-products were accelerated further. © 1993, The Electrochemical Society, Inc. All rights reserved.

DOI： 10.1149/1.2221068

Scopus

INACTIVATION OF EXTERNAL SURFACE OF MORDENITE AND ZSM-5 BY CHEMICAL-VAPOR-DEPOSITION OF SILICON ALKOXIDE 査読有り

HIBINO T, NIWA M, MURAKAMI Y

ZEOLITES 13 巻 ( 7 ) 頁： 518 - 523 1993年

Studies on Proton Conducting Ceramics Based on Perovskite-type Oxides 査読有り

Imaizumi H., Hibino T., Yajima T.

Nippon Kagaku Kaishi 1993 巻 ( 9 ) 頁： 1003 - 1011 1993年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Nippon Kagaku Kaishi

Good proton conducting solids usuable at high temperature are applicable to a solid electrolyte for high electrolytic current devices like a fuel cell, an electrolyser for hydrogen production, a hydrogen separator etc. as well as for a high temperature-type chemical sensor. Such materials had been scarcely known until we found a series of oxide ceramics which have appreciable protonic conduction under hydrogen-containing stmosphere at high temprature. They are perovskite-type oxides based on SrCeO3 or BaCeO3 in which some trivalent cations are partially substituted for cerium. SrCe0.95 Yb0.05O3-α, B aCe0.9Nd0.1 O3-α etc. belong to this class of conductors. Later, some zirconate-base sintered oxides were also confirmed to be proton conductors under hydrogen containg atmosphere at high temperature. These oxide ceramics exhibit p-type electronic conduction in an atmosphere free from hydrogen or water vapor. However, when water vapor or hydrogen is introduced to the atmosphere at high temperature, electronic conductivity decreases and protonic conduction appears. When the ceramics are exposed to the hydrogen gas, they become almost pure protonic conductors, the conductivities of which are multi 10-2 S cm-1 at 1000 °C and multi 10-3 S cm-1 at 600 °C. Protonic conduction in these solids could be verified by means of electrochemical permeation of hydrogen across the ceramics. These oxides are unique ionic conductors in respect that they have no host constituents which liberate conducting ion (proton). Using these ceramics as a solid electrolyte, several types of electrochemical devices have been demonstrated by way of experiment. Based on the principle of hydrogen concentration cell, hydrogen sensors have put to practical use for molten aluminum in casting process. © 1993, The Chemical Society of Japan. All rights reserved.

DOI： 10.1246/nikkashi.1993.1003

Scopus

CHARACTERIZATION OF PROTON IN Y-DOPED SRZRO3 POLYCRYSTAL BY IR SPECTROSCOPY 査読有り

HIBINO T, MIZUTANI K, YAJIMA T, IWAHARA H

SOLID STATE IONICS 58 巻 ( 1-2 ) 頁： 85 - 88 1992年11月

Characterization of proton in Y-doped SrZrO<inf>3</inf> polycrystal by IR spectroscopy 査読有り

Hibino T., Mizutani K., Yajima T., Iwahara H.

Solid State Ionics 58 巻 ( 1-2 ) 頁： 85 - 88 1992年11月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Solid State Ionics

To characterize proton in Y-doped SrZrO3 polycrystal, protonic conductivities and infrared spectra were measured. IR spectra exhibited two OH bands in 3500-2800 and 2650-2300 cm-1 regions, indicating that proton was bound to lattice oxide ion and that its strength of bonding was rather weak. The decrease in conductivity by replacing H+ with D+ suggested that the conducting ion was not hydroxide ion but proton and that it migrated via the dissociation of O-H bond. © 1992.

DOI： 10.1016/0167-2738(92)90014-G

Scopus

EVALUATION OF PROTON CONDUCTIVITY IN SRCEO3, BACEO3, CAZRO3 AND SRZRO3 BY TEMPERATURE PROGRAMMED DESORPTION METHOD 査読有り

HIBINO T, MIZUTANI K, YAJIMA T, IWAHARA H

SOLID STATE IONICS 57 巻 ( 3-4 ) 頁： 303 - 306 1992年10月

Evaluation of proton conductivity in SrCeO<inf>3</inf>, BaCeO<inf>3</inf>, CaZrO<inf>3</inf> and SrZrO<inf>3</inf> by temperature programmed desorption method 査読有り

Hibino T., Mizutani K., Yajima T., Iwahara H.

Solid State Ionics 57 巻 ( 3-4 ) 頁： 303 - 306 1992年10月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Solid State Ionics

To better understand protonic conduction of perovskite-type oxides based on SrCeO3, CaZrO3 and SrZrO3, their TPD spectra were measured. By estimating the amount of water vapor evolved from these oxides, proton concentrations were found to be smaller in the order SrCe0.95Yb0.05O3-α, BaCe0.95Y0.05O3-α, SrZr0.95Y0.05O3-α and CaZr0.9In 0.1O3-α. Peak maximum temperatures gave the order of proton mobilities as: BaCe0.95Y0.05O3-α>SrZr0.95Y0.05O3-α>CaZr0.9In0.1O3-α>SrCe 0.95Yb0.05O3-α. Protonic conductivity could be explained by these two orders. © 1992.

DOI： 10.1016/0167-2738(92)90162-I

Scopus

ELECTROCHEMICAL METHANE ACTIVATION TO C-2-HYDROCARBONS USING PROTONIC CONDUCTOR 査読有り

HIBINO T, HAMAKAWA S, IWAHARA H

CHEMISTRY LETTERS ( 9 ) 頁： 1715 - 1716 1992年9月

AMPEROMETRIC-TYPE SENSOR FOR CO2 USING BACEO3-BASED CERAMIC 査読有り

HIBINO T, IWAHARA H

CHEMISTRY LETTERS ( 7 ) 頁： 1221 - 1224 1992年7月

BACE03-BASED PROTONIC CONDUCTOR SENSITIVE TO ETHANOL 査読有り

HIBINO T, IWAHARA H

CHEMISTRY LETTERS ( 7 ) 頁： 1225 - 1228 1992年7月

Evaluation of proton conductivity in SrCeO3, BaCeO3, CaZrO3 and SrZrO3 by temperature programmed deposition method 査読有り

Takashi Hibino, Keigo Mizutani, Tamotsu Yajima, Hiroyasu Iwahara

Solid State Ionics 57 巻頁： 303-306 1992年

Amperometric-type sensor for CO2 using BaCeO3-based ceramic 査読有り

Takashi Hibino, Hiroyasu Iwahara

Chemistry Letters 頁： 1221-1224 1992年

Characterization of proton in Y-doped SrZrO3 polycrystal by IR spectroscopy 査読有り

Takashi Hibino, Keigo Mizutani, Hiroyasu Iwahara

Solid State Ionics 58 巻頁： 85-88 1992年

Electrochemical methane activation to C2-hydrocarbons using protonic conductor 査読有り

Takashi Hibino, Satoshi Hamakawa, Hiroyasu Iwahara

Chemistry Letters 頁： 1715-1716 1992年

BaCeO3-based protonic conductor sensitive to ethanol 査読有り

Takashi Hibino, Hiroyasu Iwahara

Chemistry Letters 頁： 1225-1228 1992年

　前のページ - 次のページ　

<日比野 高士>

論文 - 日比野 高士

<日比野　高士>

論文 - 日比野　高士