Nikki-universal Co., Ltd.

Takanobu Sakurai

Yoshiki Nakano

Tomoo Ikoma

Shinichi Ueno

A purification catalyst which prevents contamination within a reflow furnace, including flux components, while suppressing the generation of CO is provided. A purification catalyst for a reflow furnace gas, having one or two of zeolite and silica-alumina as an active ingredient.

Purification catalyst for reflow furnace gas, method for preventing contamination of reflow furnace, and reflow furnace

The present invention provides a catalyst composition which can decompose an organic nitrogen compound at a relatively low temperature to convert the compound to Nand render it harmless in the purification of an exhaust gas containing the compound (nitrogen-based exhaust gas); a catalyst containing the catalyst composition; a method for producing the catalyst; and an exhaust gas purification apparatus containing the catalyst. By using a catalyst composition formed by mixing copper oxide particles and zeolite particles, an organic nitrogen compound and/or ammonia can be converted to Nhighly selectively. The catalyst composition of the present invention may further contain a manganese oxide and/or a precious metal.

Catalyst for purifying organic nitrogen compound-containing exhaust gas and method for purifying the exhaust gas

The challenge for the present invention is to provide a catalyst composition restrained from declining in performance over time in purifying an exhaust gas containing an organic compound a silicon compound, a catalyst containing the catalyst composition, and a method for producing the catalyst. This challenge is solved by using a catalyst composition containing zeolite added to precious metal-carried alumina, and the silicon resistance of the catalyst is improved greatly. The amount of acid of the zeolite added is preferably in the range of 0.4 mmol&#xb7;NH/g to 1.5 mmol&#xb7;NH/g.

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Hiratsuka, Japan

Takanobu Sakurai