| 摘要 |
PURPOSE:To prevent not only the clogging of zeolite pores but also the lowering in activity by suppressing the precipitation action of catalytic poison to the min. degree, by mixing titania having a low specific surface area with copper- supported zeolite in a specific wt. ratio to prepare a catalyst. CONSTITUTION:Titania having a specific surface area prepared by a chlorine method is mixed with copper supported zeolite and the resulting mixture is molded and baked to prepare a denitration catalyst. In this case, copper as an active metal is supported in an amount of 0.01-20wt% by zeolite and the mixing wt. ratio of zeolite and titania is set to 1:9-9:1. By using titania having an extremely low specific surface area, the catalytic action of titania is enhanced and the precipitation action of volatile catalytic poison due to the movement of copper to titania is suppressed to the min. degree. |
