Changes in the surface hydrophobicity degree of a MCM-41 used as iron support: a pathway to improve the activity and the olefins production in the Fischer–Tropsch synthesis
Source abstract
Abstract
The effect of surface hydrophobicity degree of MCM-41 support on activity and selectivity in Fischer–Tropsch synthesis has been studied. The Fe/MCM-41 catalyst was prepared by impregnation of the mesoporous support with iron. A portion of this product was silylated with hexamethyldisilazane. The samples were characterized by atomic absorption spectroscopy, X ray diffraction at low angles, N2 adsorption at 77 K, Fourier transform infrared spectroscopy and Mossbauer spectroscopy at 25 and 298 K in controlled atmosphere. Catalytic tests were performed simulating industrial operating conditions and showed that the silylated system presents higher activity, lower selectivity toward methane and higher olefin/paraffin ratio. The higher methane production and the lower amount of olefins observed for the non-silylated catalyst indicate that this system has a larger amount of hydrogen on its surface than the silylated one. A detailed discussion about the relationship among surface chemistry, stability, selectivity and the changes in iron species of the catalysts is presented.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalysts for Methane Reforming · Electrocatalysts for Energy Conversion · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
Show source-provided references
1. M. Luo, B.H. Davis, Appl. Catal. A. Gen. 246, 171–181 (2003). doi: 10.1016/S0926-860X(03)00024-310.1016/S0926-860X(03)00024-3 ↗
2. M. Luo, H. Hamdeh, B.H. Davis, Catal. Today. 140, 127–134 (2009). doi: 10.1016/j.cattod.2008.10.00410.1016/j.cattod.2008.10.004 ↗
3. R.J. O’Brien, L. Xu, R.L. Spicer, S. Bao, D.R. Milburn, B.H. Davis, Catal. Today. 36, 325–334 (1997). doi: 10.1016/S0920-5861(96)00246-510.1016/S0920-5861(96)00246-5 ↗
4. M. Boudart, A. Delbouille, J.A. Dumesic, S. Khammouma, H. Topsøe, J. Catal. 37, 486–502 (1975). doi: 10.1016/0021-9517(75)90184-010.1016/0021-9517(75)90184-0 ↗
5. M.A. Mc Donald, D.A. Storm, M. Boudart, J. Catal. 102, 386–400 (1986). doi: 10.1016/0021-9517(86)90175-210.1016/0021-9517(86)90175-2 ↗
6. E.I. Mabaso, E. van Steen, M. Caléis, DGMK/SCI-Conference “Synthesis gas chemistry”, October, (Dresden, Germany, 2006), pp. 4–6
7. G.L. Bezemer, J.H. Bitter, H.P.C.E. Kuipers, H. Oosterbeek, J.E. Holewijn, X. Xu, F. Kapteijn, A.J. van Dillen, K.P. de Jong, J. Am. Chem. Soc. 128(12), 3956–3964 (2006). doi: 10.1021/ja058282w10.1021/ja058282w ↗
8. J.-Y. Park, Y.-J. Lee, P.K. Khanna, K.-W. Jun, J.W. Bae, Y.H. Kim, J. Mol. Catal. A. Chem. 323, 84–90 (2010). doi: 10.1016/j.molcata.2010.03.02510.1016/j.molcata.2010.03.025 ↗
9. R.A. van Santen, M.M. Ghouri, S. Shetty, E.M.H. Hensen, Catal. Sci. Technol. 1, 891–911 (2011). doi: 10.1039/C1CY00118C10.1039/C1CY00118C ↗
10. N. Fischer, E. van Steen, M. Claeys, J. Catal. 299, 67–80 (2013). doi: 10.1016/j.jcat.2012.11.01310.1016/j.jcat.2012.11.013 ↗
11. A.K. Dalai, T.K. Das, K.V. Chaudhari, G. Jacobs, B.H. Davis, Appl. Catal. A. 289, 135–142 (2005). doi: 10.1016/j.apcata.2005.04.04510.1016/j.apcata.2005.04.045 ↗
12. V.R.R. Pendyala, G. Jacobs, J.C. Mohandas, M. Luo, W. Ma, M.K. Gnanamani, B.H. Davis, Appl. Catal. A. 389, 131–139 (2010). doi: 10.1016/j.apcata.2010.09.01810.1016/j.apcata.2010.09.018 ↗
13. J.S. Beck, J.C. Vartuli, W.J. Roth, M.E. Leonowicz, C.T. Kresge, K.D. Schmitt, C.T.W. Chu, D.H. Olson, E.W. Sheppard, J. Am. Cem. Soc. 114, 10834–10843 (1992). doi: 10.1021/ja00053a02010.1021/ja00053a020 ↗
14. R. Ryoo, J.M. Kim, J. Chem. Soc. Chem. Commun. 711–712 (1995). doi: 10.1039/C3995000071110.1039/C39950000711 ↗
15. K. Lagarec, D.G. Rancourt, “Mössbauer spectral analysis software” Dep. of Phys, Version 1.0. (University of Otawa, Ottawa, 1998)
16. I. Pérez De Berti, J. Bengoa, N. Fellenz, R. Mercader, S. Marchetti, Rev. Sci. Instrum. 86, 023903-1-023903-5 (2015). doi: 10.1063/1.491338210.1063/1.4913382 ↗
17. N.A. Fellenz, PhD Thesis, http://hdl.handle.net/10915/2755
18. N.A. Fellenz, J.F. Bengoa, S.G. Marchetti, A. Gervasini, Appl. Catal. A. Gen. 435–436, 187–196 (2012). doi: 10.1016/j.apcata.2012.06.00310.1016/j.apcata.2012.06.003 ↗
19. R.R. Sever, R. Alcala, J.A. Dumesic, T.W. Root, Microporous Mesoporous Mater. 66, 53–67 (2003). doi: 10.1016/j.micromeso.2003.08.01910.1016/j.micromeso.2003.08.019 ↗
20. X.S. Zhao, G.Q. Lu, J. Phys. Chem. B. 102, 1556–1561 (2008). doi: 10.1021/jp972788m10.1021/jp972788m ↗
21. R. Mariscal, M. López-Granados, J.L.G. Fierro, J.L. Sotelo, C. Martos, R. Van Grieken, Langmuir. 16, 9460–9467 (2000). doi: 10.1021/la000876j10.1021/la000876j ↗
22. D. Brunel, A. Cauvel, F. Fajula, F. DiRenzo, in Zeolites: a refined tool for designing catalytic sites, ed. by B. Delmon, J.T. Yates. Studies in surface science and catalysis, vol. 97 (Elsevier, Amsterdam, 1995), p. 173–180. doi: 10.1016/S0167-2991(06)81887-210.1016/S0167-2991(06)81887-2 ↗
23. M. Ojeda, F.J. Pérez-Alonso, P. Terreros, S. Rojas, T. Herranz, M. López Granados, J.L. García Fierro, Langmuir. 22, 3131–3137 (2006). doi: 10.1021/la052980c10.1021/la052980c ↗
24. J.M. Rosenholm, M. Lindén, Chem. Mater. 19, 5023–5034 (2007). doi: 10.1021/cm071289n10.1021/cm071289n ↗
25. E. Murad, J.H. Johnston, in Mössbauer Spectroscopy Applied to Inorganic Chemistry, vol. 2, ed. G.J. Long, (Plenum Publishing Corporation, New York 1987)
26. W.F. Brown Jr., Phys. Rev. 130, 1677 (1963). doi: 10.1103/PhysRev.130.167710.1103/PhysRev.130.1677 ↗
27. J. Joo, T. Hyeon, J. Hyeon-Lee, Chem. Commun. 1487–1488 (2000). doi: 10.1039/B001886O .10.1039/B001886O ↗
28. J. Ryczkowski, J. Goworek, W. Gac, S. Pasieczna, T. Borowiecki, Thermochimica Acta 434, 2–8 (2005). doi: 10.1016/j.tca.2004.12.02010.1016/j.tca.2004.12.020 ↗
29. A. Calvo, P.C. Angelomé, V.M. Sánchez, D.A. Scherlis, F.J. Williams, G.J.A.A. Soler-Illia, Chem. Mater. 20, 4661–4668 (2008). doi: 10.1021/cm800597k10.1021/cm800597k ↗
30. F.J. Berry, S. Skinner, M.F. Thomas, J. Phys. Condens. Matter. 10, 215–220 (1998). doi: 10.1088/0953-8984/10/1/02410.1088/0953-8984/10/1/024 ↗
31. S.-C. Lin, J. Phillips, J. Appl. Phys. 58(5), 1943–1949 (1985). doi: 10.1063/1.33600110.1063/1.336001 ↗
32. B.S. Clausen, H. Topsøe, S. Mørup, Appl. Catal. 48, 327–340 (1989). doi: 10.1016/S0166-9834(00)82802-X10.1016/S0166-9834(00)82802-X ↗
33. S. Li, G.D. Meitzner, E. Iglesia, J. Phys. Chem. B. 105, 5743–5750 (2001). doi: 10.1021/jp010288u10.1021/jp010288u ↗
34. S. Li, W. Ding, G.D. Meitzner, E. Iglesia, J. Phys. Chem. B. 106, 85–91 (2002). doi: 10.1021/jp011882710.1021/jp0118827 ↗
35. N.B. Jackson, A.K. Datye, L. Mansker, R.J. O’Brien, B.H. Davis, Stud. Surf. Sci. Catal. 111, 501 (1997)10.1016/S0167-2991(97)80194-2 ↗
36. M.D. Shroff, D.S. Kalakkad, K.E. Coulter, S.D. Köhler, M.S. Harrington, N.B. Jackson, A.G. Sault, A.K. Datye, J. Catal. 156, 185–207 (1995). doi: 10.1006/jcat.1995.124710.1006/jcat.1995.1247 ↗
37. J. Xu, C.H. Bartholomew, J. Phys. Chem. B. 109, 2392–2403 (2005). doi: 10.1021/jp048808j10.1021/jp048808j ↗
38. L.A. Cano, M.V. Cagnoli, J.F. Bengoa, A.M. Alvarez, S.G. Marchetti, J. Catal. 278, 310–320 (2011). doi: 10.1016/j.jcat.2010.12.01710.1016/j.jcat.2010.12.017 ↗
39. L. Shi, J. Chen, K. Fang, Y. Sun, Fuel 87, 521–526 (2008). doi: 10.1016/j.fuel.2007.03.01810.1016/j.fuel.2007.03.018 ↗
40. M. Röper, Fischer–tropsch synthesis, catalysis in C1 chemistry, ed. W. Keim, 4, 41 (1983)10.1007/978-94-009-7040-3_3 ↗
41. Y. Liu, B-T. Teng, X-H. Guo, Y. Lia, J. Chang, L. Tian, X. Hao, Y. Wang, H-W. Xiang, Y-Y. Xu, Y-W. Li, J. Molec. Catal. A. Chem 272, 182–190 (2007). doi: 10.1016/j.molcata.2007.03.04610.1016/j.molcata.2007.03.046 ↗
42. M. Pijolat, V. Perrichon, P. Bussiére, J. Catal. 107, 82–91 (1987). doi: 10.1016/0021-9517(87)90274-010.1016/0021-9517(87)90274-0 ↗
43. R.E. Vandenberghe, E. De Grave, C. Landuydt, L.H. Bowen, Hyperfine Inter. 53, 175–196 (1990). doi: 10.1007/BF0210104610.1007/BF02101046 ↗
44. S.-J. Liaw, B.H. Davis, Topics Catal. 10, 133–139 (2000). doi: 10.1023/A:101917640386110.1023/A:1019176403861 ↗