Catalytic activity in individual cracking catalyst particles imaged throughout different life stages by selective staining
| Autor: | Buurmans, Inge L. C., Ruiz Martinez, Javier, Knowles, William V., van der Beek, David, Bergwerff, Jaap A., Vogt, Eelco T. C., Weckhuysen, Bert M., Sub Inorganic Chemistry and Catalysis, Inorganic Chemistry and Catalysis |
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| Přispěvatelé: | Sub Inorganic Chemistry and Catalysis, Inorganic Chemistry and Catalysis |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
General Chemical Engineering
Analytical chemistry Thiophenes: chemistry zeolites Thiophenes Fluid catalytic cracking Fluorescence Catalysis chemistry [Thiophenes] Zeolite Fluorescent Dyes Acids: chemistry Microscopy chemistry [Fluorescent Dyes] Fluorescent Dyes: chemistry Staining and Labeling Chemistry Oil refinery General Chemistry Life stage Cracking Zeolites: chemistry Chemical engineering Microscopy Fluorescence Scientific method chemistry [Zeolites] Particle chemistry [Acids] Acids |
| Zdroj: | Nature Chemistry, 3(11), 862. Nature Publishing Group |
| ISSN: | 1755-4330 |
| Popis: | Fluid catalytic cracking (FCC) is the major conversion process used in oil refineries to produce valuable hydrocarbons from crude oil fractions. Because the demand for oil-based products is ever increasing, research has been ongoing to improve the performance of FCC catalyst particles, which are complex mixtures of zeolite and binder materials. Unfortunately, there is limited insight into the distribution and activity of individual zeolitic domains at different life stages. Here we introduce a staining method to visualize the structure of zeolite particulates and other FCC components. Bronsted acidity maps have been constructed at the single particle level from fluorescence microscopy images. By applying a statistical methodology to a series of catalysts deactivated via industrial protocols, a correlation is established between Bronsted acidity and cracking activity. The generally applicable method has clear potential for catalyst diagnostics, as it determines intra- and interparticle Bronsted acidity distributions for industrial FCC materials. |
| Databáze: | OpenAIRE |
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