Hamada Hideaki

TL;DR: In this paper, the authors proposed a method to efficiently remove NOx by bringing exhaust gas containing NOx into contact with a catalyst such as proton-type zeolite, alkali metal-type Zeolite or metal oxide having acidity in an oxidative atmosphere containing excess oxygen in the presence of hydrocarbon.

TL;DR: In this paper, the authors proposed a simplified exhaust gas clarifying catalyst consisting of a first catalytic component which reduces the nitrogen oxide by using the lower hydrocarbon and a second catalyst component which produces at least the lower polycarbon from the higher polycarbon in an active temperature range of the first catalyst component.

TL;DR: In this paper, a metal alminate catalyst of fourth period transition metal under the presence of hydrocarbons or an oxygen-containing compound (hereinafter referred as Hydrocarbons) in exhaust gas or introduced from outside in the oxidation atmosphere in which excessive oxygen exists is used to remove efficiently NOx without lowering the activity of a catalyst to be used and also remove an incomplete combustion product which may be possibly emitted from said NOx removal.

TL;DR: In this paper, a supported catalyst containing nickel and copper and/or molybdenum as catalytic active metal components is used as a catalyst to give the desired compound in high selectivity advantageously.

TL;DR: In this article, a catalystic reduction catalyst for nitrogen oxides is formed by ion-exchanging a transition metal ion to at least one kind metallic oxide selected from the group consisting of aluminum oxide, silicone dioxide, titanium oxide zirconium oxide, niobium pentaoxide and stannic oxide and hydrocarbon and/or an oxygen-containing compound are used as the reducing agent.