Zeolite-containing catalyst and method for producing the same, and method for producing propylene

摘要

The present invention provides a zeolite-containing catalyst having excellent shape, fluidity and mechanical strength as a catalyst for a fluidized bed reaction. The present invention provides a zeolite-containing catalyst which is a particulate catalyst containing zeolite and silica, wherein the catalyst has an average particle diameter of 20 to 300 μm and the ratio of the void area in the cross-section of the particle is 30% or less relative to the cross-section area of the particle.

主权项

1. A method for producing a zeolite-containing catalyst, wherein the zeolite is an MFI-type zeolite, comprising: the steps of obtaining a dried powder by spray drying a raw material mixture containing zeolite and colloidal silica; and calcining said dried powder to obtain a particulate catalyst comprising an MFI-type zeolite and silica, wherein said raw material mixture contains at least one water-soluble compound selected from the group consisting of a nitrate salt, an acetate salt, a carbonate salt, a sulfate salt and a chloride in a mass ratio of 0.01 to 5.0 relative to the silica contained in said colloidal silica,
wherein the ratio of the mass of silica contained in said colloidal silica to the total amount of silica (excluding silica constituting the zeolite) contained in said raw material mixture is 0.50 by mass or more, and wherein the catalyst has an average particle diameter of 20 to 300 μm and the ratio of the void area in the cross-section of said particle is 0.30 or less relative to the cross-section area of the particle.