期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 1, 页码 257-261出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201709723
关键词
electron microscopy; heterogeneous catalysis; single-molecule microscopy; structure-activity relationships; zeolites
资金
- Netherlands Organization for Scientific Research (NWO)
- European Research Council (ERC) [321140]
- Toegepaste en Technische Wetenschappen (TTW) of NWO [12713]
Establishing structure-activity relationships in complex, hierarchically structured nanomaterials, such as fluid catalytic cracking (FCC) catalysts, requires characterization with complementary, correlated analysis techniques. An integrated setup has been developed to perform transmission electron microscopy (TEM) and single-molecule fluorescence (SMF) microscopy on such nanostructured samples. Correlated structure-reactivity information was obtained for 100nm thin, microtomed sections of a single FCC catalyst particle using this novel SMF-TEM high-resolution combination. High reactivity in a thiophene oligomerization probe reaction correlated well with TEM-derived zeolite locations, while matrix components, such as clay and amorphous binder material, were found not to display activity. Differences in fluorescence intensity were also observed within and between distinct zeolite aggregate domains, indicating that not all zeolite domains are equally active.
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