| 摘要 |
The present invention provides a beta zeolite that is useful as a catalyst, adsorbent agent, or the like, and that is both microporous and mesoporous. The beta zeolite is characterized by (i) the SiO 2 /Al 2 O 3 ratio being 8-30, and the SiO 2 /ZnO ratio being 8-1000, (ii) the micropore surface area being 300-800 m 2 /g, (iii) the micropore volume being 0.1-0.3 cm 3 /g, and (iv) having mesopores having, in the state as synthesized, a diameter of 2-6 nm and a volume of 0.001-0.3 cm 3 /g. The beta zeolite is favorably produced by means of adding and reacting a zinc silicate beta zeolite as a seed crystal with a reaction mixture containing a silica source, an alumina source, an alkali source, and water. |
