Formed zeolite honeycomb article and fired zeolite honeycomb article

摘要

A formed zeolite honeycomb article comprises a formed article obtained by extruding a zeolite raw material containing zeolite particles, an inorganic binding material and a filler constituted of plate-like particles in a honeycomb shape including partition walls disposed to form a plurality of cells, a drying shrinkage of the partition walls in a thickness direction thereof is larger than a drying shrinkage of the partition walls in a cell extending direction thereof and a drying shrinkage of the partition walls in a diametric direction perpendicular to the cell extending direction thereof, and the drying shrinkage of the partition walls in the thickness direction thereof is 1.2 or more times the drying shrinkage of the partition walls in the diametric direction perpendicular to the cell extending direction thereof in the formed zeolite honeycomb article.

主权项

1. A formed zeolite honeycomb article comprising a formed article obtained by extruding a zeolite raw material containing zeolite particles, an inorganic binding material which binds the zeolite particles to one another and a filler constituted of plate-like particles having a thin-piece-like shape where a length in a thickness direction is small as compared with a length of a long diameter, in a honeycomb shape including partition walls disposed to form a plurality of cells which become through channels of a fluid and extend from one end face to the other end face,
wherein the partition walls have a constitution where a drying shrinkage of the partition walls in a thickness direction is larger than a drying shrinkage of the partition walls in a cell extending direction and a drying shrinkage of the partition walls in a diametric direction of sections of the partition walls which is perpendicular to the cell extending direction in the honeycomb shape, and the drying shrinkage of the partition walls in the thickness direction is 1.2 or more times the drying shrinkage of the partition walls in the diametric direction of the sections of the partition walls which is perpendicular to the cell extending direction in the honeycomb shape.