| abstract |
The present application discloses a preparation method and application of a DDR molecular sieve. The method includes: a) mixing a silicon source, an aluminum source, a template R, an alkali metal ion source and water to obtain an initial mixture I; b) mixing the The initial mixture I is crystallized to obtain the DDR molecular sieve. The application is directly synthesized by solid-phase grinding under solvent-free conditions, the synthesis process is simple, and DD3R and Sigma-1 molecular sieves with good crystallinity can be obtained. |