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A weak surface modification is applied to Co/SiO2 catalyst by hydrothermal treatment at 180°C for 5 h. Aluminum is introduced to Co/SiO2 catalysts during the surface modification. The effects of surface modification on Co/SiO2 catalyst are studied by changing the operating sequences of surface modification and cobalt impregnation in the catalyst preparation. Surface modification before cobalt i...

This research investigates the effects of a synthetic diesel-like fuel (Fischer-Tropsch diesel) and biofuels (ethanol biodiesel) blends on energy-exergy efficiencies gaseous exhaust emissions characteristics compression ignition engine. Two alternative fuels denoted as E15B35FTD50 (15% ethanol, 35% biodiesel, 50% Fischer-Tropsch E15B35D50 were experimentally studied single-cylinder diesel engin...

The Fischer-Tropsch synthesis (FTS) is a heterogeneously catalyzed surface polymerization reaction with wide spectrum of hydrocarbons as products, following the Anderson-Schulz-Flory distribution. Subsequent cracking unwanted long-chain products can increase desired product fraction shorter (HCs). In this work, Co/Mn-catalyzed FTS additional by Pt/H-ZSM-5 zeolite was investigated to selectivity...

. There is little doubt that the bulk of the organic matter in meteorites is indigenous, judging from isotopic measurements on C, H, and S (20, 21). Such proof is not available for individual compounds, however, and it is therefore necessary to resort to less direct arguments to rule out terrestrial contamination. We shall briefly review the most reliably established features of organic matter ...

Sequential multiple methylene (CH2) insertions into adsorbed methyl species on clean gallium-rich GaAs(100)-(4 x 1) occurs to form higher alkenes (ethene, propene, butene) and two higher alkyl iodides (iodoethane, iodopropane), not reported for a semiconductor surface previously.

Context. How simple organic matter appeared on Earth and the processes by which it transformed into more evolved compounds, ultimately led to emergence of life, is still an open topic. Different scenarios have been proposed, main one assumes that compounds were synthesized, either in gas phase or surfaces dust grains, during process star formation they incorporated larger bodies protoplanetary ...

Single pass Fischer–Tropsch biogas-to-diesel process for off-grid fuel production in remote regions. Diesel yields optimized by operating at a higher-than-industrial CO conversions of 80% with manganese-promoted cobalt catalyst.