Fischer-Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions
Abstract
The effect of process conditions on product selectivity of Fischer-Tropsch synthesis (FTS) over industrial iron-based catalyst (100 Fe/5 Cu/4.2 K/25 SiO2) was studied in a 1-L stirred tank slurry reactor. Experiments were performed over a range of different reaction conditions, including three temperatures (T = 493, 513 and 533K), four pressures (P = 0.8, 1.5, 2.25 and 2.5 MPa), two synthesis gas feed molar ratios (H-2/CO = 0.67 and 2) and gas space velocity from 0.52 to 23.5 Ndm(3)/g-Fe/h. The effect of process conditions on reaction pathways of FTS and secondary 1-olefin reactions was analyzed by comparing product selectivities, chain growth probabilities and ratios of main products (n-paraffin, 1- and 2-olefin). Reduction of methane production and increase of C5+ products was achieved by decreasing temperature, inlet H-2/CO ratio and/or increasing pressure. Overall selectivity toward methane and C5+ did not show significant changes with variations in residence time. All of the produ...ct selectivity variations were shown to be related to changes in chain length dependent growth probabilities.
Keywords:
Fischer-Tropsch synthesis / Slurry reactor / Product selectivity / Iron catalyst / Coal-to-liquidSource:
Catalysis Today, 2016, 261, 28-39Publisher:
- Elsevier Science Bv, Amsterdam
Funding / projects:
- US DOEUnited States Department of Energy (DOE) [DE-FG26-02NT41540]
- Qatar Foundation
- The development of efficient chemical-engineering processes based on the transport phenomena research and process intensification principles (RS-172022)
DOI: 10.1016/j.cattod.2015.09.005
ISSN: 0920-5861
WoS: 000366159900004
Scopus: 2-s2.0-84948145857
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Todić, Branislav AU - Nowicki, Lech AU - Nikačević, Nikola AU - Bukur, Dragomir B. PY - 2016 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3411 AB - The effect of process conditions on product selectivity of Fischer-Tropsch synthesis (FTS) over industrial iron-based catalyst (100 Fe/5 Cu/4.2 K/25 SiO2) was studied in a 1-L stirred tank slurry reactor. Experiments were performed over a range of different reaction conditions, including three temperatures (T = 493, 513 and 533K), four pressures (P = 0.8, 1.5, 2.25 and 2.5 MPa), two synthesis gas feed molar ratios (H-2/CO = 0.67 and 2) and gas space velocity from 0.52 to 23.5 Ndm(3)/g-Fe/h. The effect of process conditions on reaction pathways of FTS and secondary 1-olefin reactions was analyzed by comparing product selectivities, chain growth probabilities and ratios of main products (n-paraffin, 1- and 2-olefin). Reduction of methane production and increase of C5+ products was achieved by decreasing temperature, inlet H-2/CO ratio and/or increasing pressure. Overall selectivity toward methane and C5+ did not show significant changes with variations in residence time. All of the product selectivity variations were shown to be related to changes in chain length dependent growth probabilities. PB - Elsevier Science Bv, Amsterdam T2 - Catalysis Today T1 - Fischer-Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions EP - 39 SP - 28 VL - 261 DO - 10.1016/j.cattod.2015.09.005 ER -
@article{ author = "Todić, Branislav and Nowicki, Lech and Nikačević, Nikola and Bukur, Dragomir B.", year = "2016", abstract = "The effect of process conditions on product selectivity of Fischer-Tropsch synthesis (FTS) over industrial iron-based catalyst (100 Fe/5 Cu/4.2 K/25 SiO2) was studied in a 1-L stirred tank slurry reactor. Experiments were performed over a range of different reaction conditions, including three temperatures (T = 493, 513 and 533K), four pressures (P = 0.8, 1.5, 2.25 and 2.5 MPa), two synthesis gas feed molar ratios (H-2/CO = 0.67 and 2) and gas space velocity from 0.52 to 23.5 Ndm(3)/g-Fe/h. The effect of process conditions on reaction pathways of FTS and secondary 1-olefin reactions was analyzed by comparing product selectivities, chain growth probabilities and ratios of main products (n-paraffin, 1- and 2-olefin). Reduction of methane production and increase of C5+ products was achieved by decreasing temperature, inlet H-2/CO ratio and/or increasing pressure. Overall selectivity toward methane and C5+ did not show significant changes with variations in residence time. All of the product selectivity variations were shown to be related to changes in chain length dependent growth probabilities.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Catalysis Today", title = "Fischer-Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions", pages = "39-28", volume = "261", doi = "10.1016/j.cattod.2015.09.005" }
Todić, B., Nowicki, L., Nikačević, N.,& Bukur, D. B.. (2016). Fischer-Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions. in Catalysis Today Elsevier Science Bv, Amsterdam., 261, 28-39. https://doi.org/10.1016/j.cattod.2015.09.005
Todić B, Nowicki L, Nikačević N, Bukur DB. Fischer-Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions. in Catalysis Today. 2016;261:28-39. doi:10.1016/j.cattod.2015.09.005 .
Todić, Branislav, Nowicki, Lech, Nikačević, Nikola, Bukur, Dragomir B., "Fischer-Tropsch synthesis product selectivity over an industrial iron-based catalyst: Effect of process conditions" in Catalysis Today, 261 (2016):28-39, https://doi.org/10.1016/j.cattod.2015.09.005 . .