Mesoporous MFI Zeolite with a 2D Square Structure Directed by Surfactants with an Azobenzene Tail Group,Chemistry - A European Journal

当前位置： X-MOL 学术 › Chem. Eur. J. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Mesoporous MFI Zeolite with a 2D Square Structure Directed by Surfactants with an Azobenzene Tail Group
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2018-05-22 , DOI: 10.1002/chem.201800307
Xuefeng Shen ₁ , Wenting Mao ₁ , Yanhang Ma ₂ , Honggen Peng ₃ , Dongdong Xu ₄ , Peng Wu ₅ , Lu Han _{1,

6} , Shunai Che _{1,

6}

Affiliation

Mesoporous MFI zeolites (MMZs) have been constructed by using the surfactant‐containing azobenzene segment in the hydrophobic tail. The cylindrical π–π stacking of azeobenzene groups is considered to be the key factor to form the ordered mesostructure through cooperative structural matching and the rearrangement of MFI frameworks. The mesostructure has been tuned from a disordered hierarchical arrangement into an ordered 2D square p4mm structure by changing the length of the alkyl chain between the diquaternary ammonium head group and azobenzene group. The geometric matching between the MFI zeolitic framework and the alkyl chain length plays an important role in the construction of the crystallographically correlated mesostructure with 2D square ordering. A combination of X‐ray diffraction patterns and electron microscopy studies provides visible evidence for the mesostructural transformation from a short‐range hexagonal or lamellar ordering to 2D square mesostructure.

中文翻译：

具有偶氮苯尾基的表面活性剂指导的具有2D正方形结构的介孔MFI沸石

中孔MFI沸石（MMZ）是通过在疏水尾部使用含表面活性剂的偶氮苯链段构建的。通过协同结构匹配和MFI框架的重排，共沸苯基团的圆柱形π-π堆积被认为是形成有序介观结构的关键因素。介观结构已从无序的层次结构调整为有序的2D正方形p 4 mm通过改变二季铵头基和偶氮苯基之间的烷基链长度来改变结构。MFI沸石骨架与烷基链长之间的几何匹配在二维方序的晶体学相关介观结构的构建中起着重要作用。X射线衍射图和电子显微镜研究相结合，为从短程六边形或层状有序向二维方形介观结构的介观结构转变提供了可见的证据。

更新日期：2018-05-22

点击分享查看原文

点击收藏

阅读更多本刊新发论文