Honda Giken Kogyo Kabushiki Kaisha

Other

Honda Motor Co., Ltd.

Mitsubishi Gas Chemical Company, Inc.

Shoji Isobe

Takahiro Naka

Osamu Usaka

Yasushi Hiramatsu

Mikio Yoneoka

Hideaki Sumi

Katsumi Kurabayashi

Masako Takayama

Avetik R Harutyunyan

Takashi Itoh

Masataka Furuyama

Takashi Ito

Kazuhito Matsuda

Methods, processes, and apparatuses for the large scale synthesis of carbon nanostructures are provided. Metal catalysts having small diameter and narrow distribution of particle sizes are prepared and continuously injected as aerosols into a reactor. The metal catalysts are supported on supports that are substantially free of carbon. The metal catalyst, in the form of a powder, is placed in an injector that is shaken vertically. The powder is aerosolized, and the powder entrailed in the gas is passed through a conduit that is bifurcated where one portion delivers the powder to the reactor while the other portion connects back to the ejector that is located in between the gas source and the top part of the container.

Dry powder injector

A fuel supplying apparatus for maintaining a stable supply of a mixed water-methanol solution while preventing water from freezing in a cold climate, and for immediately supplying a mixed water-methanol gas that has a composition which is outside of the high-rate reaction region during the starting/stopping operation of the reformer when the control tends to be unstable. The methanol reforming apparatus that generates a hydrogen-rich gas by reacting a mixed gas of water, methanol and air on a catalyst is supplied with the fuel from a fuel supplying apparatus comprising a mixed water-methanol solution tank wherein the molar ratio of water and methanol used for reforming is controlled to a predetermined value, a mixed water-methanol solution tank wherein the molar ratio of water and methanol is controlled to 4.6 or higher, and a switching means that switches the mixed water-methanol solution tank used as a fuel source according to the conditions of operation of the methanol reforming apparatus.

Method of starting and stopping methanol reforming apparatus and apparatus for supplying fuel to said apparatus

In a reforming catalyst apparatus provided with a reforming catalyst for forming a hydrogen rich reformed gas by a reforming reaction of the fuel with water, the catalyst performance can be recovered by heating the catalyst within a temperature ranging from 500&#xb0; C. to 800&#xb0; C. while supplying said fuel and air to the catalyst. This method allows recovery of the catalyst performance without demounting the catalyst from the reforming catalyst apparatus and allows providing the reforming catalyst with a long service life.

Catalyst performance recovery method for reforming catalyst apparatus

A catalyst for selective oxidation of carbon monoxide present in a hydrogen-containing gas is provided in which the catalyst comprises ruthenium supported on an alumina hydrate. This catalyst has a high selective oxidation activity to carbon monoxide. A carbon monoxide elimination method using this catalyst is also provided. In this method, to a gas containing at least hydrogen and carbon monoxide and being richer in the hydrogen than the carbon monoxide on the basis of volume, oxygen is added in an amount necessary for oxidizing at least part of carbon monoxide present in that gas, and thereafter the gas to which the oxygen has been added is brought into contact with the catalyst described above. Also provided is a solid polymer electrolyte fuel cell system that utilizes this method.

CATALYST FOR SELECTIVE OXIDATION OF CARBON MONOXIDE PRESENT IN HYDROGEN-CONTAINING GASES, AND ELIMINATION OF CARBON MONOXIDE AND SOLID POLYMER ELECTROLYTE FUEL CELL SYSTEM WHICH MAKE USE OF THE CATALYST

A methanol-decomposing catalyst comprises catalytically active components containing copper and zinc, and a carrier composed of zirconia and/or titania and ceria for supporting the catalytically active components. The methanol-decomposing catalyst has excellent catalytic activity, thereby efficiently producing a hydrogen gas while suppressing side reactions.

Methanol-decomposing catalyst and methanol-decomposing apparatus comprising same

Catalyst for selective oxidation and elimination of carbon monoxide present in hydrogen-containing gases

A catalyst for selectively oxidizing carbon monoxide in a hydrogen-containing gas comprises an alumina hydrate carrier and at least platinum supported thereon. With an aluminum hydrate as a carrier, the catalyst is resistant to deactivation which would be caused by an oxygen-containing hydrocarbon in a hydrogen-rich gas. The method for selectively removing carbon monoxide comprises the steps of adding oxygen to a hydrogen-rich gas containing carbon monoxide, in an amount necessary to oxidize at least part of carbon monoxide, and bringing the resulting mixture into contact with the catalyst for selectively oxidizing carbon monoxide. The solid polymer electrolyte-type fuel cell system utilizes the above method for selectively removing carbon monoxide.

Catalyst and method for selectively oxidizing carbon monoxide in hydrogen-containing gas and solid polymer electrolyte-type fuel cell system using such catalyst

The present invention presents: (1) a starting method that is capable of quickly switching to the reforming process after warming up a catalyst; (2) a fuel supplying apparatus that is capable of maintaining a stable supply of a mixed water-methanol solution while preventing water from freezing in a cold climate, and is also capable of immediately supplying a mixed water-methanol gas that has a composition which is outside of the high-rate reaction region during the starting/stopping operation of the reformer when the control tends to be unstable; (3) a method to quickly cool down a catalyst layer without causing thermal runaway when stopping the operation of the methanol reforming apparatus; and (4) a method to quickly cool down the catalyst layer while preventing thermal runaway from occurring and removing residual fuel when stopping the operation of the methanol reforming apparatus. In order to achieve the objects described above, the methanol reforming apparatus that generates a hydrogen-rich gas by reacting a mixed gas of water, methanol and air on a catalyst is supplied with the fuel from a fuel supplying apparatus comprising a mixed water-methanol solution tank wherein the molar ratio of water and methanol used for reforming is controlled to a predetermined value, a mixed water-methanol solution tank wherein the molar ratio of water and methanol is controlled to 4.6 or higher, and a switching means that switches the mixed water-methanol solution tank used as a fuel source according to the conditions of operation of the methanol reforming apparatus.

Growing community of inventors

Dublin, OH, United States of America

Shoji Isobe