Katsumi Miyamoto

TL;DR: In this paper, a novel catalyst for catalytic reduction of nitrogen oxide using a hydrocarbon as a reducing agent is provided, which comprises (a) at least an element of the platinum group selected from the group consisting of platinum, iridium, rhodium and ruthenium and (b) gold.

TL;DR: In this article, the authors investigated NO x reduction in diesel exhaust using selective catalytic reduction by methanol over alumina catalyst and found that the initial catalytic deactivation is attributed to the formation of Al 2 (SO 4 ) 3 -like species on alumina surface through reaction with SO 2.

TL;DR: In this article, a reduction purification method of a nitrogen oxide-containing exhaust gas by contacting a catalyst with a catalyst in an oxidative atmosphere in which an excess amount of oxygen is present and in the presence of at least one reducing agent selected from the group consisting of a hydrocarbon and an oxygen-containing organic compound, wherein said catalyst comprises an alumina having supported thereon (a) tin and (b) a reducing agent consisting of ruthenium, palladium, rhodium and indium.

TL;DR: In this paper, a process for removing nitrogen oxide from exhaust is disclosed, comprising contacting exhaust containing nitrogen oxide with an alumina catalyst which contains not more than 0.5% by weight of an alkali metal and/or an alkaline earth metal.

TL;DR: In this paper, a perovskite type composite oxide represented by a specific general formula on a solid acid carrier is used for catalytically reducing nitrogen oxides using hydrocarborns and/or an oxygen-containing compound as a reducing agent.