Fischer–Tropsch, organometallics, and other friends

Advanced fundamental modeling of the kinetics of Fischer–Tropsch synthesis

“…The ininsic activation barrier must be positive a) T 5 543 K, total pressure P 5 1.63 MPa, molar feed ratio H 2 /CO 5 1.01, W/F in 5 1.01 g s ml 21 , CO conversion 5 27.3%; b) T 5 573 K, total pressure P 5 2.55 MPa, molar feed ratio H 2 /CO 5 1.99, W/F in 5 0.37 g s ml 21 , CO conversion 5 57.2%. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.…”

“…The intrinsic activation barriers and a-values given in Table 6 lead to activation energies, E a , evolving with the chain length from 120 to 122 kJ mol 21 for paraffin formation, from 126 to150 kJ mol 21 for olefin formation, and from 120 to 140 kJ mol 21 for alcohol formation. Care has to be taken when comparing the values given in Table 6 The evolution with the carbon number of the k-values of paraffin, olefin, and alcohol formation and the readsorption of olefin are shown in Figure 10.…”

“…The structures of the surface-linked intermediates and the corresponding transition states are less known. In most of the theoretical and experimental studies, [18][19][20][21] n-alkyl was proposed as the most stable chain growth intermediate. Only one terminal (the unsaturated terminal) is linked to the active sites.…”

Methods and Applications of Deoxygenation for the Conversion of Biomass to Petrochemical Products

“…This was attributed to the presence of larger oxygen vacancies on the TiO2 support [59]. Results of a similar screening study for the decarboxylation of stearic acid are depicted in the figure (11). It is apparent that Pd, Pt on activated carbon and 5% Ru on MgO resulted in the highest conversion of stearic acids to hydrocarbons.…”

“…Fisher-Tropsch process is considered to be quite energy intensive and therefore, is not yet believed to be economical to compete with petroleum fuels. Nevertheless, active research is still in progress to improve the process [11,12]. Fermentation of synthesis gas to alcohols (primarily ethanol) using microorganisms is also an active area of research [13].…”