使用基于实验室的装置对固体催化剂进行X射线吸收近边结构光谱分析。
X-Ray Absorption Near Edge Structure Spectroscopy of a Solid Catalyst using a Laboratory-Based Set-up.
作者信息
Moya-Cancino José G, Honkanen Ari-Pekka, van der Eerden Ad M J, Schaink Herrick, Folkertsma Lieven, Ghiasi Mahnaz, Longo Alessandro, de Groot Frank M F, Meirer Florian, Huotari Simo, Weckhuysen Bert M
机构信息
Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University Universiteitsweg 99 Utrecht 3584 CG The Netherlands.
Department of Physics University of Helsinki PO Box 64 Helsinki FI-00014 Finland.
出版信息
ChemCatChem. 2019 Feb 6;11(3):1039-1044. doi: 10.1002/cctc.201801822. Epub 2019 Jan 11.
An laboratory-based X-ray Absorption Near Edge Structure (XANES) Spectroscopy set-up is presented, which allows performing long-term experiments on a solid catalyst at relevant reaction conditions of temperature and pressure. Complementary to research performed at synchrotron radiation facilities the approach is showcased for a Co/TiO Fischer-Tropsch Synthesis (FTS) catalyst. Supported cobalt metal nanoparticles next to a (very small) fraction of cobalt(II) titanate, which is an inactive phase for FTS, were detected, with no signs of re-oxidation of the supported cobalt metal nanoparticles during FTS at 523 K, 5 bar and 200 h, indicating that cobalt metal is maintained as the main active phase during FTS.
介绍了一种基于实验室的X射线吸收近边结构（XANES）光谱装置，该装置能够在与温度和压力相关的反应条件下对固体催化剂进行长期实验。作为对在同步辐射设施上进行的研究的补充，该方法在Co/TiO费托合成（FTS）催化剂上得到了展示。检测到负载的钴金属纳米颗粒旁边有一小部分（非常少）钛酸钴（II），钛酸钴（II）是FTS的非活性相，在523 K、5 bar和200 h的FTS过程中，负载的钴金属纳米颗粒没有再氧化的迹象，这表明在FTS过程中钴金属保持为主要活性相。
Zotero 插件