Kabushiki Kaisha Riken

Tokyo Gas Company Limited

Kyushu University

Adsorption Technology Industries, Ltd.

Jnc Engineering Co. Ltd.

Other

Yazaki Corporation

Tdk Corporation

Dkk Corporation

Norio Miura

Noboru Yamazoe

Masaharu Hasei

Hideyuki Kurosawa

Jun Izumi

Manabu Kuroki

Tadashi Taniuchi

Yoshifumi Nakashima

Tomoya Fujimine

Takayuki Suzuki

Hiroshi Ikeda

Akira Kunimoto

Yongtie Yan

Yunzhi Gao

Akira Shibue

Yukio Nakanouchi

Hiromasa Takashima

Hozumi Futata

Shizuko Ono

Taizo Uda

Kengo Shimanoe

Kenji Obata

Toshinari Araki

Kiyofumi Momma

Masaya Oi

Hironori Hadano

Akinori Tsuchida

An oxygen adsorbent which can be manufactured at a low cost, and an oxygen manufacturing equipment and an oxygen manufacturing method which are capable of producing oxygen-enriched gas at a low cost by using the oxygen adsorbent are provided. The oxygen adsorbent comprises at least an oxide of a perovskite structure. The oxide is represented by a compositional formula of SrCaFeO, wherein 0.12&#x2264;x&#x2264;0.40, 0&#x2264;&#x3c3;&#x2264;0.5. Since this oxide does not include La and Co included in a conventional oxygen adsorbent, it can be manufactured at a low cost.

Oxygen adsorbent, oxygen manufacturing equipment using the oxygen adsorbent and oxygen manufacturing method

The gas separation device includes an adsorption tower having at least one part thereof exposed to an atmosphere at a higher or lower temperature than normal temperature, a mixed gas feed unit, an adsorbent provided inside the adsorption tower to adsorb a matter contained in a mixed gas upon contact with the mixed gas in a prescribed pressure and temperature environment, and separate the matter from the mixed gas, a separated gas discharge unit that discharges a separated gas from the adsorption tower, and an adsorbed gas discharge unit that discharges from the adsorption tower the adsorbed gas which is adsorbed by the adsorbent. Heat reserving elements are arranged in the adsorption tower at positions upstream and downstream of the adsorbent in the mixed gas supply direction respectively such that the mixed gas, separated gas, and adsorbed gas flow through the heat reserving elements.

Gas separation device and gas separation method

A simple and inexpensive gas separation device is provided. The gas separation device () includes: an adsorption tower () having an adsorbent () that adsorbs oxygen in a prescribed pressure and temperature environment, with at least one section thereof being exposed to a higher temperature atmosphere than a normal temperature; a first feed passage () connected to the adsorption tower for guiding into the adsorption tower air that has been blown from a blower device (); a second feed passage () for guiding air, at a lower flow rate than the first feed passage, into the adsorption tower; a separated gas discharge path () connected to the adsorption tower for discharging a separated gas; a first heat exchanging unit () for exchanging heat between the separated gas discharged from the adsorption tower and the air guided into the adsorption tower from the first feed passage; an oxygen discharge unit () for reducing a pressure inside the adsorption tower, causing oxygen to desorb from the adsorption agent, and discharging oxygen from the adsorption tower; and a second heat exchanging unit () for exchanging heat between oxygen and the air guided into the adsorption tower from the second feed passage.

Gas separation device

An apparatus for measuring a medical substance where a prism having a high refractive index, a thin metal film formed on one of the surfaces of the prism, a light source for making a light incident upon the thin metal film, and a detector for detecting an incident angle of a light being made incident upon a film on which a plasmon resonance phenomenon is generated on the thin metal film are provided. The medical substance, i.e. antigen as an object to be measured, is fixed to the surface of the thin metal film, and the condition for generating the plasmon resonance phenomenon is varied when a mixture of antibody which is coupled with the medical substance in a specific manner and a sample is made contact with a surface of the thin metal film; and the amount of the medical substance can be detected by recognizing the change with a high sensitivity.

Apparatus for measuring a medical substance; a sensor for use in the apparatus; and a sensing element for use in the sensor

A carbon oxide sensor having high sensitivity capable of reduction of influence of humidity is provided. A detection electrode and a counter electrode are provided on one side of an electrolyte, respectively. The detection electrode contains a metal oxide and a metal carbonate including plural components. The metal carbonate preferably contains a first component of alkali metal carbonate and a second component of at least one element selected from the group consisting of alkali earth metal carbonate, transition metal carbonate, zinc carbonate, cadmium carbonate, indium carbonate, lead carbonate and bismuth carbonate. Specifically, it is preferable to contain the first component including LiCOand the second component including at least one element selected from the group consisting of BaCO, CaCOand SrCO.

Carbon dioxide sensor

A gas sensor for measuring concentration of a gas component in a measured gas, including a solid electrolytic substrate and at least two electrodes fixed to the substrate. At least a first electrode of the electrodes is disposed in the environment of the measurement gas, at least one of electrodes is polarized by applying a bias current or bias voltage, and a change in the potential of the polarized electrode is measured to thereby measure the concentration of the target gas.

Measuring NOx concentration

The present invention discloses a NOx sensor consisting of at least a pair of electrodes formed in touch with an ion conductive solid electrolyte; wherein the first electrode is composed of oxides of a metal (Cr, Mo or W) selected from 6a Group or a substance containing said oxides and an electric conductive material and the concentration of NOx in the test gas is detected by the change of the electromotive force between the first and second electrodes.

Nox sensor

The present invention discloses a NOx sensor consisting at least of a pair of the first and the second electrodes formed in touch with an ion conductive solid electrolyte; wherein at least the first electrode is selected from hybrid oxides having perovskite structure expressed by MSnO.sub.3 (M is at least an element selected from Mg, Ca, Sr, Ba, Mn, Co, Ni, Zn and Cd, hybrid oxides having pseudo-perovskite structure expressed by M.sub.2 SnO.sub.4 (M is at least an element selected from Mg, Ca, Sr, Ba, Mn, Co, Zn and Cd) or a substance containing said hybrid oxides and the second electrode is selected from a noble metal or a electro conductive ceramics which does not have electro conductivity in the atmosphere of NOx and the concentration of NOx in the test gas is detected by the change of the electromotive force between the first and second electrodes.

NO.sub.x  sensor

A gaseous carbon dioxide detection sensor comprising a detection electrode and a reference electrode opposed on both sides of an ionic conductor, wherein a mixture comprising one mol of an alkali metal carbonate more than one mol of an alkaline earth metal carbonate is used as the detection material for the detection electrode. The detection sensor has the electromotive force characteristic relative to the gaseous carbon dioxide less undergoing the effect of moisture in the gas to be measured and has a high sensitivity.

Gaseous carbon dioxide detection sensor

Growing community of inventors

Fukuoka, Japan

Norio Miura