Toyota Jidosha Kabushiki Kaisha

University of Connecticut

Toyota Motor Corporation

Toyota Motor Engineering & Manufacturing North America, Inc.

The University of Tokyo

University of Cambridge

Tanaka Kikinzoku Kogyo K.k.

Masaya Ibe

Hirohito Hirata

Masaru Kakinohana

Steven Lawrence Suib

Masayuki Saito

Hiroyuki Matsubara

Paul Timothy Fanson

Oji Kuno

Toshiyuki Tanaka

Satoru Katoh

Koji Yokota

Miho Hatanaka

Satoshi Nagao

Atsushi Tanaka

Mayuko Osaki

Yuji Sakakibara

Masaru Ogura

Masanori Yamato

Takahiro Hayashi

Rui Imoto

Andrew Wheatley

Brian Johnson

Kouzi Banno

Daichi Sato

Tsuyoshi Hamaguchi

Masaya Kamada

Masaoki Iwasaki

Young Chan Son

Yoshiaki Inagaki

Jota Yamauchi

Maciej Cabaj

Yoshihiko Itoh

Masaru Kakinohaha

Sinue Gomez

Kinga Malinger

Vinit Makwana

Yuuichi Sobue

An object of the present disclosure is to provide an exhaust gas purification catalyst demonstrating superior storage of NOx contained in exhaust gas. The exhaust gas purification catalyst of the present disclosure has a substrate, a first catalyst layer containing a catalytic metal for NOx reduction and a NOx storage material and formed on the substrate, and a second catalyst layer containing a catalytic metal for NOx oxidation and formed on the first catalyst layer. In the exhaust gas purification catalyst of the present disclosure, the value obtained by dividing the volume of all large pores having a pore volume of 1000 &#x3bc;mor more by the total volume of all medium pores of having a pore volume of 10 &#x3bc;mto 1000 &#x3bc;min the second catalyst layer is 2.44 or less.

Exhaust gas purification catalyst

A method for producing iron-supporting chabazite-type zeolite, comprising the following steps in order: mixing iron(II) chloride and chabazite-type zeolite, heat treating under a reducing atmosphere, and a Hydrogen reducing.

Method for producing exhaust gas purification catalyst

To provide an exhaust gas catalyst using a fired aluminum phosphate body with more excellent performance, and a method for producing it. (1) An exhaust gas purification catalyst including at least one platinum-group metal selected from the group consisting of Pt, Rh and Pd having a mean particle diameter of between 0.50 nm and 2.0 nm, supported on a tridymite-type fired aluminum phosphate body. (2) A method for producing an exhaust gas purification catalyst, including the steps of: firing aluminum phosphate obtained from an aqueous solution prepared to a pH of 3.5 to 4.5, at a temperature of between 1000&#xb0; C. and 1200&#xb0; C. for 2 hours or longer, to obtain a fired aluminum phosphate body, and supporting at least one type of platinum-group metal selected from the group consisting of Pt, Rh and Pd on the fired aluminum phosphate body.

Catalyst for exhaust gas purification, and method for producing same

[Problem] The present invention provides a NOpurification catalyst which utilizes Ag as one of the catalyst components and exhibits NOpurification performance without adjustment to a special exhaust gas composition, as well as a method of producing the same. [Means for Solution] The present invention provides a nitrogen oxide purification catalyst in which particulates are supported on a metal oxide carrier, wherein the aforementioned particulates consist of Ag and Ni and the aforementioned Ag and Ni are at least partially alloyed. Also provided is a method of producing the aforementioned catalyst, comprising the step of preparing a colloidal suspension in which the ratio of Ag is 10 to 90 at % with respect to the total amount of Ag and Ni.

[object Object]

A device for purification of exhaust gas including: an exhaust gas passageconnected to an internal combustion engine; a particulate matter trapping devicewhich is disposed in the exhaust gas passage, and which traps particulate matters in exhaust gas; ozone supply meanswhich is connected to the exhaust gas passageand on an upstream side of the particulate matter trapping device, and which can supply ozone to the particulate matter trapping device; and an NO oxidizing catalystwhich is disposed in the exhaust gas passageand on an upstream of the ozone supply means, and which oxidizes NO in the exhaust gas.

Device for purification of exhaust gas

A device for controlling an internal combustion engine comprises a device for trapping particulate matter (PM) in exhaust gas in an exhaust passage, means for supplying ozone to the particulate matter trapping device from the upstream thereof to oxidize and remove PM deposited in the device, and means for interrupting the fuel injection of the internal combustion engine upon the execution of ozone supply by the ozone supply means. It is possible to prevent components consuming ozone, such as NOx, from being contained in the exhaust gas of the internal combustion engine, whereby ozone is effectively usable.

Device and method for controlling internal combustion engine

There is provided an exhaust purifying system for an internal combustion engine which can achieve a function of a catalyst without deteriorating a function of ozone at the time of oxidizing and removing PM by using the ozone. The exhaust purifying system for the internal combustion engine comprises a wall-flow type particulate filter () for collecting particulate matter in an exhaust gas inside an exhaust passage, wherein the catalyst () is supported only in a part of a partition wall () of the particulate filter defining a passage () on the downstream side of the partition wall (). In consequence, when ozone is supplied, since the ozone is introduced on the upstream side of the partition wall () in which the PM is collected, the ozone does not contact the catalyst supported only in the part of the partition wall defining the passage () on the downstream side of the partition wall. Therefore, it is prevented that the ozone is decomposed, and a PM oxidation function is achieved.

Exhaust purifying system for internal combustion engine

An exhaust gas purification system provided with a trapping device () arranged on an engine exhaust passage and trapping particulate matter in the exhaust gas, an ozone generator () for generating ozone, and an ozone adsorbent () able to adsorb ozone, wherein at least part of the ozone generated by said ozone generator is adsorbed by said ozone adsorbent and, when particulate matter trapped on said trapping device should be removed, ozone adsorbed on the ozone adsorbent is desorbed from the ozone adsorbent and supplied to the trapping device. Due to this, it is possible to use an ozone generator with a relatively low ozone generating ability to burn off PM trapped on a filter etc. efficiently.

Exhaust gas purification system utilizing ozone

A process for cracking hydrocarbons at atmospheric pressure includes the following steps: providing a catalyst, passing a gaseous hydrocarbon over the catalyst and exposing the catalyst to microwave energy. The hydrocarbons are broken down into lower Carbon number molecules.

Process using microwave energy and a catalyst to crack hydrocarbons

An exhaust purifying system for an internal combustion engine is provided with a plurality of DPFs (and) branched and connected to an exhaust passage () for collecting particulate matter in an exhaust gas and an ozone supplier for supplying ozone to the upstream side of each of the plurality of DPFs (and). The system respectively changes a ratio of a supply amount of the exhaust gas and a ratio of a supply amount of the ozone between the plurality of DPFs (and).

Exhaust cleaner for internal combustion engine

An apparatus and a method for PM purification, where good PM purification performance can be achieved. The PM purification apparatus includes (a) a honeycomb support having an outer periphery-side region and an inner-side region, which carries a PM oxidation catalyst and in which the PM oxidation catalyst loading per unit volume of support in the outer periphery-side region is greater than the PM oxidation catalyst loading per unit volume of support in the inner-side region, (b) a center electrode passing through the center part of the honeycomb support and extending to the exhaust gas flow upstream side, and (c) an outer peripheral electrode disposed on the outer periphery of the honeycomb support and electrically insulated from the center electrode by the honeycomb support. The PM purification method can be performed using the PM purification apparatus.

Apparatus and method for PM purification

A process for removing sulfur and sulfur compounds from a catalyst includes the following steps: exposing the catalyst to a reducing atmosphere and exposing the catalyst to microwave energy. Desorption of the sulfur and sulfur compounds from the catalyst occurs at a temperature less than 600 degrees centigrade.

Microwave assisted desulfurization of nitrogen oxide storage reduction catalysts

The present invention is a catalyst comprising one or more kinds of catalyst metal, a promoter metal composed of at least one element selected from alkaline earth metals, transition metals, rare earth metals, aluminum and gallium, and a support, wherein the catalyst metal and the promoter metal are supported on the support through allowing a multi-element metal colloid solution to be attached to the support, and the multi-element metal colloid solution comprises a solvent comprising water or a mixture of water and an organic solvent, metal cluster particles which are dispersed and suspended in the solvent and composed of one or more kinds of catalyst metal, a protective agent for protecting the metal cluster particles, and one or more kinds of metal ions bonded to the protective agent, the ions selected from alkaline earth metal ions, transition metal ions, rare earth metal ions, aluminum ions and gallium ions.

Catalyst produced by using multi-element metal colloid

A gas purifying apparatus includes an adsorption member (e.g., a honeycomb structural body) that adsorbs particulate matter contained in the gas by the action of an electric field. The apparatus also includes a supply device (e.g., an ozone generator including a discharger, a pulsed power supply, a pump, and a discharge port) that supplies a pro-oxidant to the adsorption member.

Gas purifying apparatus

A process for decomposing nitrogen oxides includes the following steps: providing a catalyst, passing a gaseous nitrogen oxide over the catalyst and exposing the catalyst to microwave energy. The gaseous nitrogen oxide is broken down into nitrogen and oxygen molecules.

Growing community of inventors

Susono, Japan

Masaya Ibe