兴大报告XingDa Lecture 641

文摘   科学   2023-10-16 15:14   北京  




报告详情


报告人Prof. Michael Claeys‍‍‍‍‍

University of Cape Town, South Africa
注:本次报告为线下报告。
时间:2023年10月20日(星期五)15:40
地点:化学楼A204‍‍‍‍
主请人:马丁‍‍‍‍‍‍




报告摘要


‍‍‍‍

Magnetic characterisation of catalysts for energy applications  


The University of Cape Town, in collaboration with Sasol Technology, has developed an in-situ/operando magnetometer, which allows to study ferromagnetic catalysts at industrial conditions of high temperature (>800°C) and high pressure (>50 bar) [1]. This unique set-up can be used to study phase changes (such as reduction, oxidation and carburization) as well as crystallites size changes. In certain cases even crystallite size distributions of the magnetic phase can be obtained. Importantly, while studying these changes, fully relevant kinetic data can be measured on this flow through fixed bed reactor system so that the catalyst performance can be directly linked to its current state. Examples of investigations conducted with the set-up, which inform catalyst and process design, will be presented and these include, inter alia:
• Crystallite size dependent oxidation of cobalt, iron and nickel CO
hydrogenation catalysts.
• Sintering of a cobalt and nickel CO hydrogenation catalyst as function of
process conditions.
• Role of carbides in cobalt based Fischer-Tropsch synthesis.
• Leaching of cobalt from Pt-Co fuel cell catalysts.


References:
[1]   M. Claeys, E. van Steen, J.L Visagie, J. van de Loosdrecht, PCT Patent WO2010/004419 A2, 9 July 2009.




报告人简介

Professor Claeys obtained his PhD (with distinction) in Fischer-Tropsch catalysis at the University of Karlsruhe, Germany, in 1997 and then joined the Catalysis Institute at the University of Cape Town. Here he was instrumental in establishing a large research activity with focus on Fischer-Tropsch catalysis, a technology, which lies at the heart of South Africa’s synthetic fuels and chemicals industry and which is playing an increasingly important role in the production of green future fuels via Power-to-X processes. Other research interests include the preparation and characterisation of nano materials and their use in catalytic applications, as well as the development of catalysts and novel instrumentation for characterisation of catalysts at working conditions. Professor Claeys has published extensively on these topics, he holds a number of patents and he has been awarded an A-rating (‘leading international researcher’) by the National Research Foundation of South Africa.

A large portion of his research is conducted in conjunction with industrial partners, in particular a longstanding industrial collaboration with Sasol R&D. Professor Claeys is the Director of the DSI-NRF Centre of Excellence in Catalysis, c*change, a large virtual and multidisciplinary Centre, where he also acts as the Manager of the Scientific Synthesis Gas Programme, which includes processes of catalytic valorization of CO2. He is currently involved in various large PTL projects including the BMBF-funded CARE-O-SENE consortium and the South African national CoalCO2-to-X flagship programme. Moreover, he is the founding Chairperson of the Syngas Convention, a triennial international meeting on synthesis gas technologies held in Cape Town.





兴大报告
北京大学化学学院兴大报告系列讲座从1995年开始,为促进化学学院的国内外学术交流、营造活跃的学术交流氛围发挥了重要作用,是研究生培养过程中一门必不可少的前沿学术报告课程。
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