| 摘要 |
An electro-catalytic tube for controlling exhaust emissions, which adopts to purify a lean-burn exhaust, comprises a tube, an anode layer and a cathode layer. The tube is composed of a solid oxide layer. The solid oxide layer includes an enclosed chamber, an inner wall formed inside the enclosed chamber, and an outer wall formed outside the enclosed chamber. The anode layer and the cathode layer are respectively coated on the inner wall and the outer wall of the solid oxide layer. The enclosed chamber has a reducing environment. The reducing environment in the enclosed chamber and the oxidizing environment of the lean-burn exhaust facilitate an electromotive force to form between the anode layer and the cathode layer to promote catalytic decomposition of nitrogen oxides of the exhaust on the cathode layer. Accordingly, the electro-catalytic tube has advantage of compact structure and low cost comparing with the conventional electrochemical-catalytic converter. |
