caa a22 4500 606173447 CHVBK 20210128100733.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11244-015-0456-z doi (NATIONALLICENCE)springer-10.1007/s11244-015-0456-z The State of Nickel as Promotor in Cobalt Fischer-Tropsch Synthesis Catalysts [Elektronische Daten] [Georg Voss, Jostein Fløystad, Alexey Voronov, Magnus Rønning] This study focuses on the state of nickel as promotor in cobalt Fischer-Tropsch synthesis catalysts. Both catalyst material and promotor were monitored during reduction and under Fischer-Tropsch synthesis conditions with X-ray absorption spectroscopy and X-ray powder diffraction. The study was carried out on catalysts with varying amounts of metal and promotor in order to elucidate interactions between support, catalyst and promotor metal. Nickel acts as a reduction promotor for cobalt, with a low percentage of nickel interacting with the alumina support to form unreducible nickel aluminate. Furthermore, in a two-step impregnation procedure nickel behaves as seeds for the cobalt particles with the subsequent formation of a solid solution between the two metals. Springer Science+Business Media New York, 2015 Promotor nationallicence Fischer-Tropsch catalyst nationallicence in situ X-ray absorption spectroscopy nationallicence Voss Georg Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491, Trondheim, Norway aut Fløystad Jostein Department of Physics, Norwegian University of Science and Technology (NTNU), Høgskoleringen 5, 7491, Trondheim, Norway aut Voronov Alexey Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491, Trondheim, Norway aut Rønning Magnus Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491, Trondheim, Norway aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 896-904 1022-5528 58:14-17<896 2015 58 11244 https://doi.org/10.1007/s11244-015-0456-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11244-015-0456-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Voss Georg Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491, Trondheim, Norway aut NATIONALLICENCE 700 1- Fløystad Jostein Department of Physics, Norwegian University of Science and Technology (NTNU), Høgskoleringen 5, 7491, Trondheim, Norway aut NATIONALLICENCE 700 1- Voronov Alexey Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491, Trondheim, Norway aut NATIONALLICENCE 700 1- Rønning Magnus Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491, Trondheim, Norway aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 896-904 1022-5528 58:14-17<896 2015 58 11244