Linking diffusion and reaction - Understanding and controlling transport processes to optimize rates and selectivities for (micro-)porous catalysts

连接扩散和反应 - 了解和控制传输过程以优化（微）多孔催化剂的速率和选择性

• 批准号: 313864573
• 负责人: Professor Dr. Andreas Jentys
• 金额: --
• 依托单位: Lehrstuhl für Technische Chemie II
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/313864573?language=en
• 关键词: Linking; diffusion; reaction; Understanding; controlling

The objective of the project is to measure, analyze, and model the competitive transport of reactants, intermediates, and products for the gas phase isomerization of xylenes with the aim of developing concepts for the design of a new generation of catalysts, which combine high activity with high para selectivity. This will include transport measurement under reactive and non-reactive conditions to study the role of the coverage of the active sites on the catalytic properties. Novel experimental approaches based on X-Ray absorption spectroscopy on the Al edge and MAS-NMR spectroscopy under reaction conditions will be combined with pressure and concentration step experiments to follow transport and reactivity under well-defined and conditions to explore concepts for enhancing the activity and selectivity by controlling the transport properties inside the pores under reaction conditions.

该项目的目标是测量、分析和模拟二甲苯气相异构化反应物、中间体和产物的竞争性传输，旨在开发新一代催化剂的设计概念，该催化剂结合了高活性具有高对位选择性。这将包括反应性和非反应性条件下的传输测量，以研究活性位点的覆盖对催化性能的作用。基于铝边缘的 X 射线吸收光谱和反应条件下的 MAS-NMR 光谱的新颖实验方法将与压力和浓度阶跃实验相结合，以跟踪明确定义的条件下的传输和反应性，以探索增强活性和反应性的概念。通过在反应条件下控制孔内的传输特性来实现选择性。

项目成果

Influence of Acid Sites on Xylene Transport in MFI Type Zeolites

• DOI: 10.1021/acs.jpcc.9b11437
• 发表时间: 2020-01
• 期刊: Journal of Physical Chemistry C
• 影响因子: 3.7
• 作者: M. Baumgärtl;A. Jentys;J. Lercher

Understanding Elementary Steps of Transport of Xylene Mixtures in ZSM-5 Zeolites

• DOI: 10.1021/acs.jpcc.8b07348
• 发表时间: 2019-04-04
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY C
• 影响因子: 3.7
• 作者: Baumgaertl, Martin;Jentys, Andreas;Lercher, Johannes A.
• 通讯作者: Lercher, Johannes A.