| 摘要 |
Crystalline isotactic zeolites having the composition 2/ pi RxW2O3xm YO2xp H2O where R is an organic amine and n is the number of amine groups in the amine molecule, W is one or more of the elements B, Al, Ga and Fe and Y is Si and/or Ge, and a process for the preparation of these crystalline isotactic metal silicate zeolites from mixtures of YO2 and W(OH)3 by hydrothermal crystallization at from 100 DEG to 200 DEG C. with the aid of an organic amine, in the absence of an alkali metal base, alkaline earth metal base or quaternary nitrogen base or their intermediates, the number m depending on the chain length of the organic amine used in the crystallization. |
