Direct synthesis of long-chain alcohols from syngas over CoMn catalysts

CO2valorisation towards alcohols by Cu-based electrocatalysts: challenges and perspectives

“…23,[35][36][37][38] Some reports have recently provided an outlook of future opportunities for hydrogenation of CO 2 into C 2+ compounds. [41][42][43] As mentioned above, C 2+ oxygenate products are desirable since they have the undoubted advantage of a higher energy density than methanol. However, no commercial…”

Effect of the support on cobalt carbide catalysts for sustainable production of olefins from syngas

“…For the CoMnNa/SiO2 and CoMnNa/γ-Al2O3 catalysts, three distinct peaks centered at 372, 427, and 566 °C and at 326, 400, and 604 °C were identified, respectively. Based on the combination with the XRD results and previous studies [23][24][25]35], the first two peaks of CoMnNa/SiO2 and CoM-nNa/γ-Al2O3 correspond to a two-step reduction of Co 3+ to Co 2+ and Co 2+ to metallic Co 0 . The peak at the higher reduction temperature is mainly due to highly dispersed cobalt species that strongly interact with the oxide support.…”

“…The DFT calculations suggest that the activation energies for CO dissociation of various Co2C facets are quite different. In our previous study [35], we showed that Co2C nanoparticles with certain exposed facets can act as dual sites for oxygenate formation. The Co2C facets with a lower CO dissociation activation energy might act as the active site to form alkyl species, while those with a higher CO dissociation activation energy are responsible for CO insertion.…”

“…In addition to weak diffraction peaks of the corresponding support materials, the XRD measurements of CoMnNa/SiO2 and CoM-nNa/γ-Al2O3 reveal the presence of diffraction peaks corresponding to Co3O4 (JCPDS #74-2120) and MnO2 (JCPDS #81-2261). The CoMnNa/CNT shows diffraction peaks of CoMn2O4 (JCPDS #77-0471) and CoO (JCPDS #74-2391) [24,25,35].…”

Influence of Carbon Content in Ni-Doped Mo2C Catalysts on CO Hydrogenation to Mixed Alcohol

“…Four kinds of catalysts are commonly used in CO hydrogenation to mixed alcohol: Rh-based catalysts [7][8][9][10], Mo-based catalysts [11][12][13][14], modified Fischer-Tropsch synthesis catalysts [15][16][17][18] and modified methanol synthesis catalysts [19,20]. Molybdenum carbide catalysts are widely used in CO or CO 2 hydrogenation to mixed alcohol [21][22][23], water gas shift [24,25], methanol steam reforming [26][27][28], methane dry reforming [29] and so on.…”