| abstract |
The invention discloses a KL molecular sieve dynamically synthesized by using a crystal seed as a structure-directing agent and a preparation method thereof. The potassium hydroxide, aluminum source, silicon source and water are combined according to (1-3.5): 1: (5-9) : (150～300) molar ratio, then dropwise add KL molecular sieve seed crystal solution, stir and age, carry out dynamic hydrothermal crystallization, separate, wash and dry to obtain KL molecular sieve. Compared with other seed guiding methods of KL molecular sieve, the method provided by the present invention has the following advantages: 1. It can be synthesized under dynamic conditions and is easy to carry out industrial scale-up; 2. The synthesis yield is high, reaching more than 80%, and it has significant cost Advantage. |