| 摘要 |
PROBLEM TO BE SOLVED: To provide a new Si-alone molecular sieve having high activity, and to provide a synthesis method of the Si-alone molecular sieve.SOLUTION: The Si-alone molecular sieve has (10-90):1 of Q4/Q3 (in which Q4 is the peak intensity of a chemical shift of 112±2 ppm in a 29SiNMR spectrum of the Si-alone molecular sieve and Q3 is the peak intensity of another chemical shift of 103±2 ppm in the 29SiNMR spectrum of the Si-alone molecular sieve). The synthesis method of the Si-alone molecular sieve comprises: a step (1) of mixing a template agent, an organic silicon raw material, water and an inorganic amine raw material, hydrolyzing an obtained mixture, and removing alcohol from the hydrolyzed mixture; a step (2) of aging the product, which is obtained at the step (1), at 15-50°C; and a step (3) of mixing the aged product, which is obtained at the step (2), with a solid silicon raw material homogeneously, crystallizing an obtained mixture in an airtight reactor, and recovering the crystallized Si-alone molecular sieve. |
