Hierarchical zeolites and preparation method therefor

• Main Authors: KIM TAE-JIN, CHOEN YOUNG-EUN, LIM SEON-JU
• Format: Patent
• Language: Chinese; English
• Published: 27.04.2021
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The present invention relates to a method for preparing hierarchical zeolites, comprising the steps of: preparing a first mixture solution comprising a structure-directing agent, an alumina precursor and a pH controller; preparing a second mixture solution by injecting a silica precursor into the first mixture solution; preparing an aqueous solution comprising a surfactant; preparing a third mixture solution by injecting the aqueous solution into the second mixture solution; and drying and heat-treating the third mixture solution. According to the present invention, hierarchical zeolites having a uniform morphology can be prepared, and thus hierarchical zeolites having improved activity are provided. 涉及一种分级沸石的制造方法，其中，所述分级沸石的制造方法包括：制造包括结构诱导物质、氧化铝前体及pH调节剂的第一混合溶液的步骤；在所述第一混合溶液添加二氧化硅前体制造第二混合溶液的步骤；制造包括表面活性剂的水溶液的步骤；将所述水溶液添加在第二混合溶液制造第三混合溶液的步骤；以及烘干及热处理所述第三混合溶液的步骤。根据本发明可制造具有均匀的形态(morphology)的分级沸石，由此提供活性被改善的分级沸石。