Carbon-Carbon bond formation during Fe catalyzed Fischer-Tropsch synthesis

2020 ◽  
Vol 602 ◽  
pp. 117607
Author(s):  
Buchang Shi ◽  
Yunxin Liao ◽  
Zachary J. Callihan ◽  
Brad T. Shoopman ◽  
Mingsheng Luo
Keyword(s):  
Bond Formation ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Carbon Bond ◽  
Fischer Tropsch Synthesis ◽  
Carbon Carbon Bond

scholarly journals Mechanistic insight into carbon-carbon bond formation on cobalt under simulated Fischer-Tropsch synthesis conditions

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
C. J. (Kees-Jan) Weststrate ◽  
Devyani Sharma ◽  
Daniel Garcia Rodriguez ◽  
Michael A. Gleeson ◽  
Hans O. A. Fredriksson ◽  
...  
Keyword(s):  
Bond Formation ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Carbon Bond ◽  
Fischer Tropsch Synthesis ◽  
Synthesis Conditions ◽  
Mechanistic Insight ◽  
Carbon Carbon Bond ◽  
Insight Into

Carbon-carbon bond formation at dinuclear metal centres

1982 ◽  
Vol 308 (1501) ◽  
pp. 67-73 ◽  
Keyword(s):  
Metal Surface ◽  
Related Species ◽  
Bond Formation ◽  
Surface Processes ◽  
Formation Processes ◽  
Fischer Tropsch ◽  
Unsaturated Hydrocarbons ◽  
Carbon Bond ◽  
Fischer Tropsch Synthesis ◽  
Carbon Carbon Bond

The Fischer-Tropsch synthesis of hydrocarbons probably involves an array of carbon-carbon bond-formation processes occurring to unite carbene, carbyne, alkyl, olefin, and related species on a metal surface. In seeking to understand the nature of such processes, model diruthenium complexes have been prepared and the products of their thermolysis and reactions with unsaturated hydrocarbons investigated. The combination at a diruthenium centre of two carbenes, of a carbene and an alkyne, and of a carbyne and an olefin is described, and the possible implications for metal surface processes are emphasized.

Fischer-Tropsch CO-Hydrogenation on SiO2-supported Osmium Complexes

2008 ◽  
Vol 63 (3) ◽  
pp. 289-292 ◽  
Author(s):  
Ntombovuyo Bungane ◽  
Cathrin Welker ◽  
Eric van Steen ◽  
Michael Claeys
Keyword(s):  
Carbon Monoxide ◽  
Co Hydrogenation ◽  
Bond Formation ◽  
Organometallic Complexes ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
High Olefin ◽  
Osmium Complexes ◽  
Very High

The conversion of carbon monoxide with hydrogen was studied on a standard Os on SiO2 catalyst at different reaction temperatures, in the range between 200 and 300 °C. Additionally, supported di- and triatomic organometallic Os complexes were tested for their activity in the Fischer-Tropsch synthesis at 220 °C. All compounds showed formation of hydrocarbons, indicating that the organoosmium complexes are indeed active for C─C bond formation. Osmium as Fischer-Tropsch catalyst, however, is approximately 100 times less active compared to ruthenium. Very high methane selectivities (> 90 C-%) were obtained as well as high olefin to paraffin ratios, in particular with the organometallic complexes tested.

Carbon Dioxide-Mediated C(sp2)–H Arylation of Primary and Secondary Benzylamines

2018 ◽  
Author(s):  
Mohit Kapoor ◽  
Pratibha Chand-Thakuri ◽  
Michael Young
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Bond Activation ◽  
Bond Formation ◽  
Carbon Bond ◽  
Chelate Effect ◽  
Free Amine ◽  
Carbon Carbon Bond ◽  
New Strategy ◽  
Metal Catalyzed

Carbon-carbon bond formation by transition metal-catalyzed C–H activation has become an important strategy to fabricate new bonds in a rapid fashion. Despite the pharmacological importance of <i>ortho</i>-arylbenzylamines, however, effective <i>ortho</i>-C–C bond formation from C–H bond activation of free primary and secondary benzylamines using Pd<sup>II</sup> remains an outstanding challenge. Presented herein is a new strategy for constructing <i>ortho</i>-arylated primary and secondary benzylamines mediated by carbon dioxide (CO<sub>2</sub>). The use of CO<sub>2</sub> is critical to allowing this transformation to proceed under milder conditions than previously reported, and that are necessary to furnish free amine products that can be directly used or elaborated without the need for deprotection. In cases where diarylation is possible, a chelate effect is demonstrated to facilitate selective monoarylation.

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