• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Atomic Force Microscopy of Novel Zeolitic Materials Prepared by Top-Down Synthesis and ADOR Mechanism
【24h】

Atomic Force Microscopy of Novel Zeolitic Materials Prepared by Top-Down Synthesis and ADOR Mechanism

机译：自顶向下合成和ADOR机理制备的新型沸石材料的原子力显微镜

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Top-down synthesis of 2D materials from a parent 3D zeolite with subsequent post-synthetic modification is an interesting method for synthesis of new materials. Assembly, disassembly, organisation, reassembly (ADOR) processes towards novel materials based on the zeolite UTL are now established. Herein, we present the first study of these materials by atomic force microscopy (AFM). AFM was used to monitor the ADOR process through observation of the changes in crystal surface and step height of the products. UTL surfaces were generally complex and contained grain boundaries and low-angle intergrowths, in addition to regular terraces. Hydrolysis of UTL to IPC-1P did not have adverse effects on the surfaces as compared to UTL. The layers remained intact after intercalation and calcination forming novel materials IPC-2 and IPC-4. Measured step heights gave good correlation with the X-ray diffraction determined d_(200)-spacing in these materials. However, swelling gave rise to significant changes to the surface topography, with significantly less regular terrace shapes. The pillared material yielded the roughest surface with ill-defined surface features. The results support a mechanism for the majority of these materials in which the UTL layers remain intact during the ADOR process as opposed to dissolving and recrystallising during each step.
机译：由母体3D沸石自顶向下合成2D材料并进行后续的合成后修饰是合成新材料的一种有趣方法。现在已经建立了基于沸石UTL的新型材料的组装，拆卸，组织，重新组装（ADOR）工艺。本文中，我们通过原子力显微镜（AFM）对这些材料进行了首次研究。通过观察产品晶体表面和台阶高度的变化，使用原子力显微镜来监测ADOR工艺。 UTL表面通常很复杂，除了规则的平台外，还包含晶界和低角度共生体。与UTL相比，UTL水解为IPC-1P对表面没有不利影响。插层和煅烧后，这些层保持完整，形成了新型材料IPC-2和IPC-4。在这些材料中，测得的台阶高度与确定d_（200）间距的X射线衍射具有良好的相关性。但是，溶胀导致表面形貌发生显着变化，规则梯形形状明显减少。带支柱的材料产生的表面最粗糙，表面特征不明确。结果支持了大多数这些材料的机理，其中在ADOR过程中UTL层保持完整，而不是在每个步骤中溶解和重结晶。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号