Fischer-Tropsch synthesis in microchannels
| Autor: | Gurutze Arzamendi, Oihane Sanz, Eduardo Falabella Sousa-Aguiar, José Antonio Odriozola, Luis M. Gandía, Miguel Ángel Centeno, Mario Montes, Luciano C. Almeida, F.J. Echave |
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| Přispěvatelé: | Universidad de Sevilla. Departamento de Química Inorgánica, Ministerio de Ciencia e Innovación (MICIN). España |
| Rok vydání: | 2011 |
| Předmět: |
Washcoating
Fischer–Tropsch (FTS) geography Microchannel geography.geographical_feature_category Materials science General Chemical Engineering Fischer–Tropsch process Nanotechnology General Chemistry Microreactors Microchannels reactor Industrial and Manufacturing Engineering Catalysis Honeycomb structure Chemical engineering Environmental Chemistry Microreactor Monolith Selectivity Layer (electronics) Structured supports |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname idUS. Depósito de Investigación de la Universidad de Sevilla |
| Popis: | Different metallic supports (aluminum foams of 40ppi, honeycomb monolith and micromonolith of 350 and 1180cpsi, respectively) have been loaded with a 20%Co-0.5%Re/γ-Al2O3 catalyst by the washcoating method. Layers of different thicknesses have been deposited onto the metallic supports. The catalytic coatings were characterized measuring their textural properties, adhesion and morphology. These structured catalysts have been tested in the Fischer-Tropsch synthesis (FTS) and compared with a microchannel block presenting perpendicular channels for reaction and cooling. The selectivity depends on the type of support used and mainly on the thickness of the layer deposited. In general, the C5+ selectivity decreased at increasing CO conversion for all of the systems (powder, monoliths, foams and microchannels block). On the other hand, the selectivity to methane increased with the thickness of the catalytic layer due to the higher effective H2/CO ratio over the active sites resulting from the higher diffusivity of H2 compared with CO in the liquid products filling the pores. The C5+ selectivity of the microchannels reactor is higher than that of the structured supports and the powder catalyst. © 2010 Elsevier B.V. Financial support by PETROBRAS, the Spanish MICINN (MAT2006-12386-C05 and ENE2009-14522-C05) and UPV/EHU (GIU07/63) are gratefully acknowledged. TEKNIKER is acknowledged for the mechanical construction. |
| Databáze: | OpenAIRE |
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