Fischer–Tropsch synthesis: Development of kinetic expression for a sol–gel Fe–Ni/Al2O3 catalyst

Investigations on the effect of reaction parameters over Fe/Cu/K catalyst for the production of selective range of liquid hydrocarbon

“…Increasing pressure from 15 to 25 bar, the chain growth probability increased from 0.70 to 0.73 ( Figure 5b). Our finding corroborates the results obtained by Sarkari et al 18 Effect of GHSV on C 5+ liquid hydrocarbons products distribution at H 2 /CO = 2, temperature = 225 • C and the pressure =15 bar as shown in Figure 4c. The details of liquid product analyzed data at two different GHSV based on carbon number basis and the ASF chain growth fitted mechanism is presented ( Figure 5c).…”

“…C 5 + hydrocarbon decreases with increase in H 2 /CO ratio. Our finding of CO conversion trend corroborates with the results obtained by Mirzaei et al, 18 and Sarkari et al 21 They indicated that after H 2 /CO = 2.5, there is a large difference in the partial pressure of H 2 and CO and relatively small amount of adsorbed CO is surrounded by adsorbed H species. The consequences of the process end up producing lower chain hydrocarbon.…”

“…The results obtained are in contradiction with the findings of few researchers. 16,18 However, Iglesia et al, 19 observed the same trend and suggested that as residence time increases, C 5+ selectivity increases. Reason relied on was the secondary reactions which contribute to chain growth probability and increases product with higher molecular weight.…”

“…Our finding corroborates the literature results. 18,39 The above discussion shows that the quality of the C 5+ liquid product is shifted toward a desired range of hydrocarbon (C 11 -C 20 ) at selected optimum reaction conditions (Temp -225 • C, pressure -25 bar, GHSV -2000 cc/gcat-h and H 2 /CO ratio -1).…”

Theoretical and experimental evaluation of mass transfer limitation in gas phase dehydration of glycerol to acrolein over supported HSiW catalyst

“…Acrolein is the intermediate component for acrylic acid, methionine, 1,3-propanediol and lactic acid, which are important monomers in production of polymers and polyesters [2][3][4]. However, the importance of bio-based materials prevails today due to various environmental concerns and depletion of fossil fuel reservoirs in the near future [5][6][7][8]. There are many reports about bio-based glycerol dehydration to acrolein [9][10][11] and other value-added chemicals [12][13][14] over various homogeneous or heterogeneous acid catalysts.…”