Morphological modification of zeolite crystals in the presence of inorganic salts and through the synthesis conditions

在无机盐存在下并通过合成条件对沸石晶体进行形态改性

• 批准号: 457685089
• 负责人: Professor Dr. Martin Hartmann, since 10/2023
• 金额: --
• 依托单位: Institut für Geologie, Mineralogie und Geophysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/457685089?language=en
• 关键词: Morphological; modification; zeolite; crystals; presence

This proposed project is dedicated to investigating the influence of the presence of inorganic salts as well as reaction conditions during zeolite synthesis on the crystal morphology of the obtained zeolites. Focus of the project is the formation of layer-like crystal morphologies through intergrowth with crystallographic twin structures. Such reduction of the crystal dimension in one direction is a promising strategy to upgrade the catalytic performance of zeolites. Accordingly, the project is subdivided into 3 main parts: First, quantitative correlations between synthesis parameters, formation rate of the intergrowing zeolite structures and the resulting crystal morphologies will be identified for the example of the FAU(X)/EMT intergrowth system. The findings will then be applied for the morphological modification of the zeolite types FAU(Y)/EMT and MFI/MEL in the absence of organic morphology modifiers. In the third part, the effect of the morphological modification, especially of different zeolite crystal thickness, in liquid phase catalysis will be investigated.

该项目致力于研究沸石合成过程中无机盐的存在以及反应条件对所得沸石晶体形态的影响。该项目的重点是通过与晶体孪生结构共生形成层状晶体形态。这种在一个方向上减小晶体尺寸是提升沸石催化性能的一种有前途的策略。因此，该项目分为三个主要部分：首先，将以 FAU(X)/EMT 共生系统为例，确定合成参数、共生沸石结构的形成速率和所得晶体形态之间的定量相关性。然后，研究结果将应用于在没有有机形态改性剂的情况下对 FAU(Y)/EMT 和 MFI/MEL 型沸石进行形态改性。在第三部分中，将研究形态修饰，特别是不同沸石晶体厚度的形态修饰在液相催化中的效果。