SSZ-13 molecular sieve and preparation method thereof

• Main Authors: LIU ZHONGQING, ZHAO FENG, SUN JIANCHUAN, MENG BO, DENG ZHAOJING, GUO DONGDONG
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses an SSZ-13 molecular sieve and a preparation method thereof, relates to the technical field of SSZ-13 molecular sieve synthesis, and aims to solve the problems that the distribution of aluminum pairs and isolated aluminum in an SZ-13 molecular sieve is basically fixed, the hydrothermal stability is poor, and the catalytic performance improvement space is limited. The preparation method comprises the following steps: pretreating a raw material molecular sieve to prepare molecular sieve gel with a six-membered ring skeleton; adding a silicon source and a template agent into the molecular sieve gel with the six-membered ring skeleton, and aging; the SSZ-13 molecular sieve is obtained through crystallization after aging, and the raw material molecular sieve is a Y-type molecular sieve. The SSZ-13 molecular sieve and the preparation method thereof provided by the invention are used for producing the SSZ-13 molecular sieve. 本发明公开一种SSZ-13分子筛及其制备方法，涉及SSZ-13分子筛合成技术领域，以解决SZ-13分子筛中的铝对及孤立铝分布是基本固定的，