Synthesis method of hierarchical pore ZSM-5@beta core-shell type molecular sieve

• Main Authors: LIN WEI, WANG PENG, HAN LEI, SONG HAITAO, DA ZHIJIAN, YAN JIASONG
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2021
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention belongs to the technical field of molecular sieve synthesis, and relates to a synthesis method of a hierarchical pore ZSM-5@beta core-shell molecular sieve, which comprises the following steps of: (1) well mixing a silicon source, an alkali source, a template agent and water to form a first mixture, the alkali source being inorganic alkali; (2) mixing a ZSM-5 molecular sieve with the first mixture obtained in the step (1) to obtain a second mixture; and (3) crystallizing the second mixture to form the ZSM-5@beta core-shell type molecular sieve. The synthesis method of the hierarchical pore ZSM-5@beta core-shell type molecular sieve provided by the invention can be used for synthesizing a ZSM-5@beta core-shell type molecular sieve with relatively high coverage degree. 本发明属于分子筛合成技术领域，涉及一种多级孔ZSM-5@β核壳型分子筛合成方法包括如下步骤：1)硅源、碱源、模板剂和水混合均匀，形成第一混合物；所述的碱源为无机碱；2)ZSM-5分子筛与步骤(1)得到的第一混合物混合，得到第二混合物；3)第二混合物晶化，形成ZSM-5@β核壳型分子筛。本发明提供的多级孔ZSM-5@β核壳型分子筛合成方法，能够合成覆盖度较高的ZSM-5@β核壳型分子筛。