Improvement of diffusive mass transport in hierachically structured Fischer-Tropsch catalysts

分级结构费托催化剂中扩散传质的改进

• 批准号: 206052266
• 负责人: Professor Dr.-Ing. Gunther Brenner
• 金额: --
• 依托单位: Institut für Technische Mechanik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/206052266?language=en
• 关键词: Improvement; diffusive; mass; transport; hierachically

The pore system of cobalt-based catalysts employed for low-temperature Fischer-Tropsch-synthesis is completely filled with liquid products under typical reaction conditions. This leads to lower catalyst utilization and especially to decreased selectivity and yield with regard to the desired long-chain hydrocarbons at the expense of undesirable methane formation. During the previous phases of the project, the optimization potential of introducing larger transport pores to the catalyst structure was investigated theoretically and experimentally. It was shown that the accessibility of the pore system can be enhanced. However, an even greater improvement could be achieved by introduction of parallel, cylindrical transport pores, which shall be prepared by a newly developed template method in the next project phase. Moreover, theoretical considerations predict a dramatic amplification of the catalyst utilization if it would be possible to introduce omniphobic or superoleophobic pores that remain free of liquid products. Such pores shall be prepared by different methods, theoretically described and experimentally tested.

在典型的反应条件下，用于低温费托合成的钴基催化剂的孔系统被液体产物完全填充。这导致较低的催化剂利用率，特别是以不希望的甲烷形成为代价，导致所需长链烃的选择性和产率降低。在该项目的前几个阶段，引入更大的传输孔的催化剂结构的优化潜力进行了理论和实验研究。结果表明，可以提高孔隙系统的可及性。然而，通过引入平行的圆柱形运输孔可以实现更大的改进，这些孔将在下一个项目阶段通过新开发的模板方法制备。此外，理论上的考虑预测催化剂利用率的急剧放大，如果有可能引入保持不含液体产物的全疏或超疏油孔。应采用不同的方法制备这些孔，并进行理论描述和实验测试。

项目成果

Building concept inspired by raspberries: From microporous zeolite nanocrystals to hierarchically porous assemblies

• DOI: 10.1016/j.micromeso.2016.04.012
• 发表时间: 2016-07
• 期刊: Microporous and Mesoporous Materials
• 影响因子: 5.2
• 作者: M. Klumpp;Lintao Zeng;S. Al‐Thabaiti;A. Weber;W. Schwieger

Synthese von SiO2‐Katalysatorträgern mit einstellbarer Porengröße durch Sprühtrocknung und Kalzinierung

喷雾干燥煅烧合成孔径可调的SiO2催化剂载体

• DOI: 10.1002/cite.201300136
• 发表时间: 2014
• 期刊: Chemie Ingenieur Technik
• 影响因子: 1.9
• 作者: L. Zeng;A.P. Weber
• 通讯作者: A.P. Weber

Herstellung von porösen Nanopartikelschichten auf beliebigen Substraten mittels Niederdruckimpaktion

使用低压冲击在任何基材上生产多孔纳米颗粒层

• DOI: 10.1002/cite.201300137
• 发表时间: 2014
• 期刊: Chemie Ingenieur Technik
• 影响因子: 1.9
• 作者: L. Zeng;A.P. Weber
• 通讯作者: A.P. Weber

Aerosol-Synthese von porösen Katalysatorpartikeln mit einstellbaren Porengrößen und Katalysatordurchmessern†

孔径和催化剂直径可调的多孔催化剂颗粒的气溶胶合成

• DOI: 10.1002/cite.201600184
• 发表时间: 2017
• 期刊: Chemie Ingenieur Technik
• 影响因子: 1.9
• 作者: J. Röhrbein;A. Martínez Arias;A.P. Weber
• 通讯作者: A.P. Weber

Numerical simulation of the collision of two microdroplets with a pseudopotential multiple-relaxation-time lattice Boltzmann model

• DOI: 10.1007/s10404-013-1202-0
• 发表时间: 2014
• 期刊: Microfluidics and Nanofluidics
• 影响因子: 2.8
• 作者: E. Monaco;G. Brenner;K. Luo