Micron-Sized Zeolite Beta Single Crystals Featuring Intracrystal Interconnected Ordered Macro-Meso-Microporosity Displaying Superior Catalytic Performance.,Angewandte Chemie International Edition

当前位置： X-MOL 学术 › Angew. Chem. Int. Ed. › 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.)

Micron-Sized Zeolite Beta Single Crystals Featuring Intracrystal Interconnected Ordered Macro-Meso-Microporosity Displaying Superior Catalytic Performance.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-07-08 , DOI: 10.1002/anie.202007069
Ming-Hui Sun _{1,

2} , Li-Hua Chen ₁ , Shen Yu ₁ , Yu Li ₁ , Xian-Gang Zhou _{1,

3} , Zhi-Yi Hu _{1,

3} , Yu-Han Sun _{4,

5} , Yan Xu ₆ , Bao-Lian Su _{1,

2}

Affiliation

Zeolite Beta single crystals with intracrystalline hierarchical porosity at macro‐, meso‐, and micro‐length scales can effectively overcome the diffusion limitations in the conversion of bulky molecules. However, the construction of large zeolite Beta single crystals with such porosity is a challenge. We report herein the synthesis of hierarchically ordered macro‐mesoporous single‐crystalline zeolite Beta (OMMS‐Beta) with a rare micron‐scale crystal size by an in situ bottom‐up confined zeolite crystallization strategy. The fully interconnected intracrystalline macro‐meso‐microporous hierarchy and the micron‐sized single‐crystalline nature of OMMS‐Beta lead to improved accessibility to active sites and outstanding (hydro)thermal stability. Higher catalytic performances in gas‐phase and liquid‐phase acid‐catalyzed reactions involving bulky molecules are obtained compared to commercial Beta and nanosized Beta zeolites. The strategy has been extended to the synthesis of other zeolitic materials, including ZSM‐5, TS‐1, and SAPO‐34.

中文翻译：

微米级沸石β单晶，具有晶内互连的有序宏观-中观-微孔率，显示出优异的催化性能。

具有宏观，中观和微观长度尺度的晶体内分层孔隙率的Beta型沸石沸石可以有效克服大分子转化过程中的扩散限制。然而，具有这样的孔隙率的大沸石β单晶的构造是挑战。我们在这里报告了通过原位自下而上的局限型沸石结晶策略，合成了具有罕见的微米级晶体尺寸的分级有序的大介孔单晶沸石Beta（OMMS-Beta）。完全互连的晶体内宏观-中观-微孔层次结构和OMMS-Beta的微米级单晶性质导致改善了对活性位点的可达性和出色的（水）热稳定性。与商用Beta和纳米Beta沸石相比，在涉及大分子的气相和液相酸催化反应中获得了更高的催化性能。该策略已扩展到合成其他沸石材料，包括ZSM-5，TS-1和SAPO-34。

更新日期：2020-07-08

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11