Fischer-Tropsch support effects

Sabi, A. M., Claeys, M., and van Steen, E. 2002. Silica supported Fischer-Tropsch catalysts Effect of pore diameter of support. Catal. Today 71 395 402. 

Abbaslou RMM, Tavassoli A, Soltan J, Dalai AK. Iron catalysts supported on carbon nanombes for Fischer—Tropsch synthesis effect of catalytic site position. Appl Catal A 2009 367 47-52. 

Bambal, A.S., et al., 2014. Poisoning of a silica-supported cobalt catalyst due to presence of suUiir impurities in syngas during Fischer-Tropsch synthesis effects of chelating agent. Industrial Engineering Chemistry Research 53 (14), 5846—5857. 

The polymers were converted to supported catalysts corresponding to homogeneous complexes of cobalt, rhodium and titanium. The cobalt catalyst exhibited no reactivity in a Fischer-Tropsch reaction, but was effective in promoting hydroformylation, as was a rhodium analog. A polymer bound titanocene catalyst maintained as much as a 40-fold activity over homogeneous titanocene in hydrogenations. The enhanced activity indicated better site isolation even without crosslinking. 

The induction of steric effects by the pore walls was first demonstrated with heterogeneous catalysts, prepared from metal carbonyl clusters such as Rh6(CO)16, Ru3(CO)12, or Ir4(CO)12, which were synthesized in situ after a cation exchange process under CO in the large pores of zeolites such as HY, NaY, or 13X.25,26 The zeolite-entrapped carbonyl clusters are stable towards oxidation-reduction cycles this is in sharp contrast to the behavior of the same clusters supported on non-porous inorganic oxides. At high temperatures these metal carbonyl clusters aggregate to small metal particles, whose size is restricted by the dimensions of the zeolitic framework. Moreover, for a number of reactions, the size of the pores controls the size of the products formed thus a higher selectivity to the lower hydrocarbons has been reported for the Fischer Tropsch reaction. 

Bezemer G.L., Bitter J.H., Kuipers H.P.C.E., Oosterbeek H., Holewijn J.E., Xu X., Kapteijn F., van Dillon A.J., and de Jong K.P. 2006. Cobalt particle size effects in the Fischer-Tropsch reaction studied with carbon nanofibre supported catalysts. J. Am. Chem. Soc. 128 3956-64. 

Jacobs G., Das T.K., Zhang Y., Li J., Racoillet G., Davis B.H. 2002. Fischer-Tropsch synthesis Support, loading and promoter effects on the reducibility of cobalt catalysts. Appl. Catal. A Gen. 233 263-81. 

Morales F., de Smit E., de Groot F.M.F., Visser T., and Weckhuysen B.M. 2007. Effects of manganese oxide promoter on the CO and H2 adsorption properties of titania-supported cobalt Fischer-Tropsch catalysts. J. Catal. 246 91-99. 

Zhang Y., Hanayama K., and Tsubaki N. 2006. The surface modification effects of silica support by organic solvents for Fischer-Tropsch synthesis catalysts. Catal. Commun. 7 251-54. 

Bezemer, G. L., Radstake, P. B., Falke, U., Oosterbeek, H., Kuipers, H. P. C. E., van Dillen, A., and de Jong, K. P. 2006. Investigation of promoter effects of manganese oxide on carbon nanofiber-supported cobalt catalysts for Fischer-Tropsch synthesis. Journal of Catalysis 237 152-61. 

Huang, X. W., Elbashir N. O., and Roberts, C. B. 2004. Supercritical solvent effects on hydrocarbon product distributions from Fischer-Tropsch synthesis over an alumina-supported cobalt catalyst. Industrial Engineering Chemistry Research 43 6369-81. 

Effect of a Novel Nitric Oxide Calcination on the Catalytic Behavior of Silica-Supported Cobalt Catalysts during Fischer-Tropsch Synthesis, and Impact on Performance Parameters... 

Dalai, A.K., Das, T.K., Chaudhari, K.V., Jacobs, G., and Davis, B. H. 2005. Fischer-Tropsch synthesis Water effects on Co supported on narrow and wide-pore silica. Appl. Catal. 289 135-42. 

Hilmen, A. M., Schanke, D., Hanssen, K. F., and Holmen, A. 1999. Study of the effect of water on alumina supported cobalt Fischer-Tropsch catalysts. Appl. Catal. A 186 169-88. 

Viswanathan, B., and Gopalkrishnan, R. 1986. Effect of support and promoter in Fischer-Tropsch cobalt catalysts. J. Catal. 99 342-48. 

Miller, D.G., and Moskovits, M. 1988. A study of the effects of potassium addition to supported iron catalysts in the Fischer-Tropsch reaction. J. Phys. Chem. 92 6081-85. 

Iglesia, E., Soled, S.L., and Fiato, R.A. 1992. Fischer-Tropsch synthesis on cobalt and ruthenium. Metal dispersion and support effects on reaction rate and selectivity. J. Catal. 137 212-24. 

Fischer-Tropsch Synthesis Comparison of the Effect of Co-Fed Water on the Catalytic Performance of Co Catalysts Supported on Wide-Pore and Narrow-Pore Alumina... 

Khodakov, A.Y., Griboval-Constant, A., Bechara, R., and Zholobenko, V.L. 2002. Pore size effects in Fischer Tropsch synthesis over cobalt-supported mesoporous silicas. 7. Catal. 206 230-41. 

Dalai et al.31 investigated the effect of water on the performance of narrow and wide-pore silica-supported cobalt catalysts for Fischer-Tropsch synthesis. Three catalysts were studied 12.4 wt% Co on a wide-pore silica, 20 wt% Co on a... 

Fig. 4 Effect of added water on the C5 + selectivity (filled symbols) and CH4 selectivity (open symbols) as a function of CO conversion at different conditions for Co/A1203 (A), CoRe/Al203 (B), Co/Si02 (C), CoRe/Si02 (D), Co/Ti02 (E), and CoRe/Ti02 (F). Before water addition ( , ), 20% water added ( , O), 33% water added (A, A) and after water addition ( , O).19 Reprinted from Journal of Catalysis, Vol. 231, S. Storsaeter, 0. Borg, E. A. Blekkan and A. Holmen, Study of the effect of water on Fischer-Tropsch synthesis over supported cobalt catalysts, pp. 405-419. Copyright (2005), with permission from Elsevier.

Borg, S. Storsaeter, S. Eri, H. Wigum, E. Rytter and A. Holmen, The effect of water on the activity and selectivity for gamma-alumina supported cobalt Fischer-Tropsch catalysts with different pore sizes, Catal. Lett., 2006, 107, 95-102. 

S. Storsaeter, 0. Borg, E. A. Blekkan and A. Holmen, Study of the effect of water on Fischer-Tropsch synthesis over supported cobalt catalysts, J. Catal., 2005, 231, 405-419. 

---