Title

Opportunities for Mass Spectrometry to Study Reactive Flows

Time: Dec. 2nd, 10:00 AM Beijing

参会方式

蔻享学术直播 （扫码预约）

https://www.koushare.com/lives/room/805261

Speaker

Professor Nils Hansen

Combustion Research Facility,

Sandia National Laboratories, 

7011 East Ave, Livermore, CA 94550 USA

Abstract：

Mass spectrometry is a perfect analytical tool to study complex reaction networks as found in many environments and applications. Using this technique, unprecedentedly detailed chemical insights are generated as it allows for simultaneous and sensitive detection of all intermediates and products of the reaction network without prior knowledge of their identity. This presentation highlights the basic concepts of our mass spectrometry approaches and how we use these techniques to gain new chemical knowledge. The aim is to review recent progress in a) the detection and quantification of elusive key intermediates of hydroperoxide species in autoignition chemistry and b) the identification of the repetitive nature of radical-radical well-skipping reactions in molecular-weight growth and soot formation chemistry, c) the detection of labile intermediates near the surface of heterogenous catalytic reactions, and d) the understanding of plasma-assisted processes such as chemical looping.

Biography:

Nils Hansen received his PhD in Physical Chemistry at the Christian-Albrechts-Universität Kiel, Germany, in 2000 under the guidance of Prof. F. Temps. He then worked with Prof. A. M. Wodtke as a postdoctoral researcher at the University of California Santa Barbara, USA, and as a staff member at the BASF AG, Ludwigshafen, Germany. In 2004, he joined Sandia National Laboratories in Livermore, CA, USA as a Principal Investigator in the "Flame Chemistry and Diagnostics" laboratory of the Combustion Research Facility. Hansen’s research focuses on unraveling the complexity of reaction networks by providing detailed insights into the fundamental chemistry of low-temperature oxidation and the formation of aromatic species in incomplete combustion processes. He has co-authored more than 150 publications in peer-reviewed international journals. For his work, he has received several awards, including a Feodor-Lynen-Fellowship of the Alexander von Humboldt-Foundation and the Helmholtz International Fellow Award. Hansen served as program co-chair for the 39th International Symposium on Combustion, Vancouver, Canada, is a member of the editorial board for the “Proceedings of the Combustion Institute” and was the organizer of the biannual “International Workshop on Flame Chemistry” series. He was elected a “Fellow of the Combustion Institute” in 2019.

主办方

中国工程热物理学会燃烧学分会

清华大学燃烧能源中心