Carbon Nanofibers as Macro-Structured Catalytic Support

Liquid-Phase Hydrodeoxygenation of Guaiacol over Mo2C Supported on Commercial CNF. Effects of Operating Conditions on Conversion and Product Selectivity

“…Within the universe of carbon supports, carbon nanofibers (CNFs), and carbon nanotubes (CNTs) have been less exploited as catalyst supports in HDO of bio-oils [13]. CNFs and CNTs present high mechanical resistance, high electrical conductivity, high thermal stability, high conductibility, high capacity for hydrogen adsorption even at high temperatures, and a morphology that allows for the rapid access of reactants and evacuation of products from catalytic active sites [14][15][16][17]. Moreover, acid and alkali treatments can be used to enhance the hydrophilicity by creating oxygen functionalities over the carbonaceous materials, and facilitating the dispersion of metals over the CNFs with water solutions [14,15,18].…”

“…CNFs and CNTs present high mechanical resistance, high electrical conductivity, high thermal stability, high conductibility, high capacity for hydrogen adsorption even at high temperatures, and a morphology that allows for the rapid access of reactants and evacuation of products from catalytic active sites [14][15][16][17]. Moreover, acid and alkali treatments can be used to enhance the hydrophilicity by creating oxygen functionalities over the carbonaceous materials, and facilitating the dispersion of metals over the CNFs with water solutions [14,15,18]. These properties of CNFs and CNTs gained the interest of the catalysis community working on HDO [13,19,20].…”

Site-Specific Controlled Growth of Coiled Lambda-Shaped Carbon Nanofibers for Potential Application in Catalyst Support and Nanoelectronics

“…Finally, the use of CNFs as catalyst support gathered high interest for improvement of catalytic activity. [15][16][17][18] Several approaches were presented to fabricate branched CNTs or CNFs. 5,19,28,29,[20][21][22][23][24][25][26][27] Another peculiar subset of carbon structures are wound-up CNFs/CNTs.…”

“…CNTs and CNFs without branches are still used for mimicking the nanostructures of geckos for their use as dry adhesives, − but branched CNFs could potentially mimick structures more closely. Finally, the use of CNFs as catalyst support has gathered high interest for improvement of catalytic activity. − Several approaches were presented to fabricate branched CNTs or CNFs. ,,,,− Another peculiar subset of carbon structures are wound-up CNFs/CNTs. These twisted structures are commonly referred to as coiled or helical CNFs/CNTs and are of particular interest for introducing chirality into the system. ,− They have been applied, for example, as a highly efficient adsorbent for wastewater treatment .…”