caa a22 4500 606173587 CHVBK 20210128100733.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11244-015-0474-x doi (NATIONALLICENCE)springer-10.1007/s11244-015-0474-x Nanosize Gold Promoted Vanadium Oxide Catalysts for Ammoxidation of 2-Methylpyrazine to 2-Cyanopyrazine [Elektronische Daten] [A. Alshammari, V. Kalevaru, N. Dhachapally, A. Köckritz, A. Bagabas, A. Martin] Ammoxidation of 2-methylpyrazine to 2-cyanopyrazine has been carried out using nano sized gold promoted vanadia catalysts in the temperature range from 360 to 400°C at atmospheric pressure. Three different types of metal oxides [e.g. CaO, Al2O3 and TiO2 (anatase)] with varying surface areas were used as catalyst supports. The catalysts were prepared by three-step impregnation method and characterised by various techniques. Characterisation results showed the formation of nano-sized gold particles in the range from 2 to 5nm. However, their size and morphology strongly depends upon the nature of support applied. Catalytic results revealed that Au is an efficient promoter for vanadia catalysts in improving the yield of the desired product, 2-cyanopyrazine, due to synergistic effect between the Au and VOx species. Among all, V2O5-Au/TiO2 exhibited the best performance giving over 75% conversion of 2-methylpyrazine and close to 50% yield of CP. Springer Science+Business Media New York, 2015 Ammoxidation nationallicence 2-Methylpyrazine nationallicence 2-Cyanopyrazine nationallicence Gold nano particles nationallicence Vanadia catalysts nationallicence Alshammari A. Materials Science Research Institute, King Abdulaziz City for Science and Technology, King Abdullah Road, P.O. Box 6086, 11442, Riyadh, Saudi Arabia aut Kalevaru V. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut Dhachapally N. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut Köckritz A. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut Bagabas A. Materials Science Research Institute, King Abdulaziz City for Science and Technology, King Abdullah Road, P.O. Box 6086, 11442, Riyadh, Saudi Arabia aut Martin A. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 1062-1068 1022-5528 58:14-17<1062 2015 58 11244 https://doi.org/10.1007/s11244-015-0474-x 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/s11244-015-0474-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alshammari A. Materials Science Research Institute, King Abdulaziz City for Science and Technology, King Abdullah Road, P.O. Box 6086, 11442, Riyadh, Saudi Arabia aut NATIONALLICENCE 700 1- Kalevaru V. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut NATIONALLICENCE 700 1- Dhachapally N. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut NATIONALLICENCE 700 1- Köckritz A. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut NATIONALLICENCE 700 1- Bagabas A. Materials Science Research Institute, King Abdulaziz City for Science and Technology, King Abdullah Road, P.O. Box 6086, 11442, Riyadh, Saudi Arabia aut NATIONALLICENCE 700 1- Martin A. Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059, Rostock, Germany aut NATIONALLICENCE 773 0- Topics in Catalysis Springer US; http://www.springer-ny.com 58/14-17(2015-10-01), 1062-1068 1022-5528 58:14-17<1062 2015 58 11244