The construction of hierarchical pore systems from the post-synthesis modifications of lamellar zeolite catalysts have attracted wide interests to solve the diffusion limitations in the catalytic application of zeolite catalysts. Herein, the interlayer expanded MWW with different interlayer spacing were obtained, based on the post-synthesis modifications of a swollen multilamellar MWW precursor, in which the MWW layers were pillared by cetyltrimethylammonium bromide (CTAB) surfactant with 25 Å interlayer distance. The direct calcination and the post-synthesis modifications led to zeolite catalysts with more open pore structures (hierarchical, interlayer expanded and pillared), which were evidenced by a series of characterizations, such as PXRD, TEM, N₂ adsorption-desorption etc. Moreover, the catalytic performances of the hierarchical MWW (H-MWW), interlayered expanded zeolite IEZ-MWW and Pillared-MWW catalysts were compared with 3D-MWW and ZSM-5 in the condensation of cyclohexanone with glycol or benzaldehyde with 1-pentanol. The catalysts prepared in this study show better catalytic activities than 3D-MWW and ZSM-5.

由层状沸石催化剂的合成后改性构造分级孔隙系统引起了广泛的兴趣，以解决沸石催化剂在催化应用中的扩散限制。在此，基于溶胀的多层MWW前体的合成后修饰，获得了具有不同层间间距的层间扩展MWW，其中，MWW层由十六烷基三甲基溴化铵（CTAB）表面活性剂作为支撑，层间距离为25。直接煅烧和合成后的改性导致沸石催化剂具有更多的开孔结构（分层，层间膨胀和带柱状），这通过一系列表征（例如PXRD，TEM，N ₂）得到证明。此外，在环己酮与乙二醇或苯甲醛的缩合反应中，比较了分级MWW（H-MWW），层间膨胀沸石IEZ-MWW和Pillared-MWW催化剂与3D-MWW和ZSM-5的催化性能。与1-戊醇。在这项研究中制备的催化剂显示出比3D-MWW和ZSM-5更好的催化活性。