| abstract |
PROBLEM TO BE SOLVED: To provide an SCR solid catalyst containing zeolite and a method for producing the SCR solid catalyst, which can be produced by extrusion molding and enables the highest possible mechanical stability. An extruded solid catalyst for decomposing nitrogen oxides in the presence of a reducing agent, comprising 60-87% by weight of Cu, Hf, La, Au, In, V, lanthanoid and period An ion-exchanged zeolite containing at least one metal selected from the group consisting of Group VIII transition metals in the table, greater than 10 to 37 wt% aluminum oxide, and 2 to 10 wt% inorganic fibers A solid catalyst containing an active substance. [Selection figure] None |