Influence of sucrose addition and acid treatment of silica-supported Co-Ru catalysts for Fischer-Tropsch synthesis
| Autor: | David Merino, Oihane Sanz, Nelson Medeiros de Lima Filho, Cesar Augusto Moraes de Abreu, André T.S. Ribeiro, Rodrigo A.C. Bartolomeu, Mario Montes, Laísse C.A. Maranhão, Antonio O. S. Silva, Victor V.L. Bezerra, Giovanna Machado, Luciano C. Almeida |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
010405 organic chemistry General Chemical Engineering Organic Chemistry Energy Engineering and Power Technology chemistry.chemical_element Fischer–Tropsch process 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Fuel Technology Hydrocarbon Adsorption chemistry Chemisorption Dispersion (chemistry) Cobalt Nuclear chemistry Space velocity |
| Zdroj: | Fuel. 231:157-164 |
| ISSN: | 0016-2361 |
| DOI: | 10.1016/j.fuel.2018.05.064 |
| Popis: | This article highlights the formulation and evaluation of Co-Ru catalysts on silica used in Fischer-Tropsch synthesis. An acid treatment of the support associated with the addition of sucrose as a chelating agent was employed. The six formulated catalytic systems were characterized (TG, XRD, N2 adsorption, H2-TPR, H2 chemisorption) and evaluated in a fixed bed tubular reactor (H2/CO:2:1, 2 MPa, space velocity 4.5 × 10−2 LN.gcat−1·h−1) at five different temperatures (185 °C, 200 °C, 215 °C, 230 °C, 260 °C). The combination of both methods enhanced the cobalt dispersion, which is accompanied by an increase in C5+ hydrocarbon productivity. However, an optimum acid treatment is required to avoid large cobalt particle formation that leads to low CO conversion. |
| Databáze: | OpenAIRE |
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