Results 41 to 50 of about 30,636 (239)

Effect of calcium promoter on nano structure iron catalyst for Fischer–Tropsch synthesis [PDF]

open access: yesJournal of Petroleum Science and Technology, 2015
The Fischer-Tropsch synthesis (FTS) has been recognized as a heterogeneous surface-catalyzed polymerization process. During this process, CHx monomers formed via the hydrogenation of adsorbed CO on transition metals produce hydrocarbons and oxygenates ...
yhaya zamani   +3 more
doaj   +1 more source

Production of high molecular weight organic compounds on the surfaces of amorphous iron silicate catalysts: Implications for organic synthesis in the solar nebula [PDF]

open access: yes, 2002
The high molecular weight organic products of Fischer-Tropsch/Haber-Bosch syntheses on the surfaces of Fe-silicate catalysts have been studied by ...
Gilmour, I.   +4 more
core  

Recent Progress in the Phase‐Controlled Synthesis of Ruthenium Nanocrystals for Catalytic Applications

open access: yesAdvanced Materials, EarlyView.
Template effect and kinetic control enable crystal‐phase engineering of Ru nanocrystals, granting access to either metastable fcc‐Ru or stable hcp‐Ru with distinct surface structures, thermal stabilities, and catalytic behaviors. Moreover, the hcp‐Ru can further serve as an epitaxial template to direct Pd and Rh nanocrystals into the metastable hcp ...
Jianlong He   +3 more
wiley   +1 more source

Fischer–Tropsch Synthesis with Cu-Co Nanocatalysts Prepared Using Novel Inorganic Precursor Complex [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2018
The structural properties and activities of Cu-Co catalysts used in Fischer-Tropsch synthesis are explored according to their method of preparation. Impregnation, co-precipitation, and a novel method of thermal decomposition were applied to an inorganic ...
Javad Farzanfar, Ali Reza Rezvani
doaj  

Liquid Bismuth Catalyst Enables High‐CO‐Selectivity in CO2 Hydrogenation

open access: yesAdvanced Science, EarlyView.
This work introduces a dynamic liquid bismuth catalyst for efficient CO2‐to‐syngas conversion. Stabilized molten Bi nanodroplets on a defective VOx support enable a reversible Bi3+/Bi0 redox cycle at moderate temperatures. Mechanistic insights reveal that Ni‐Bi dual sites synergistically activate H2 and cleave CO2, leading to high CO selectivity ...
Xinxin Lu   +6 more
wiley   +1 more source

CO2‐to‐CO Electrolysis in Pure Water at Ampere‐Level Current Density and 1000 h Stability via a Rapid‐Transport Fixed‐Charge Interface

open access: yesAdvanced Science, EarlyView.
CO2 reduction in pure water is enabled by a rapid‐transport fixed‐charge interface that couples nanochannels with a cationic microenvironment. This design eliminates the mass transport plateau, stabilizes key reaction intermediates, and suppresses the hydrogen evolution reaction, ultimately achieving ampere‐level current densities and stable operation ...
Qiqi Wan   +8 more
wiley   +1 more source

Iron Based Nano-hydrotalcites Promoted with Cu as Catalysts for Fischer-tropsch Synthesis in Biomass to Liquid Process

open access: yesChemical Engineering Transactions, 2022
Two different groups of MgCuFe catalysts derived from hydrotalcite-like precursors were prepared through ultrasound-assisted (US) co-precipitation and solvent-free ball milling methods (BM).
Arian Grainca   +6 more
doaj   +1 more source

Water vapor emission from IRC+10216 and other carbon-rich stars: model predictions and prospects for multitransition observations

open access: yes, 2007
We have modeled the emission of H2O rotational lines from the extreme C-rich star IRC+10216. Our treatment of the excitation of H2O emissions takes into account the excitation of H2O both through collisions, and through the pumping of the nu2 and nu3 ...
Bagnulo S.   +11 more
core   +1 more source

JET Fuel Production from High Molecular Weight Fischer- Tropsch Paraffin Mixture

open access: yesChemical Engineering Transactions, 2016
The quality requirements of fuels have significantly increased in the last 20 years. Furthermore, the demand for fuels produced from non-edible plants or waste biomass has become more important, due to more stringent environmental protection and ...
S. Tomasek   +4 more
doaj   +1 more source

Cobalt-Containing Dispersion Catalysts for Three-Phase Fischer–Tropsch Synthesis

open access: yesFrontiers in Chemistry, 2020
Nanosized catalyst dispersions have significant potential for improving hydrocarbon production from carbon monoxide and hydrogen via Fischer–Tropsch synthesis, an essential alternative to the use of petroleum as a raw material.
Anton Lvovich Maximov   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy