| Popis: |
This paper reports ou crystallization phenomena observed in a new technique of direct synthesis of particulates in the fluid cracking catalyst size range of faujasite-type zeolite molecular sieve. The procedure, using sized sodium illuminate particles reacting with saltcontaining sodium silicate solutions, produces zeolite particulates pseudomorphic after intermediate gel particles. Promoting rapid, uniform growth of small (0.2 μm) intergrown octahedra crystals from numerous nuclei results in pseudomorphic particulates which are attritionresistant. |
