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|Title:||DEVELOPMENT OF NICKEL HYDROXYAPATITE CATALYST FOR CO2 HYDROGENATION TO METHANE||Authors:||WAI MING HUI||Keywords:||CO2 conversion,CO2 utilization,CO2 hydrogenation,carbon dioxide methanation,hydroxyapatite,carbon dioxide hydrogenation||Issue Date:||25-Jun-2018||Citation:||WAI MING HUI (2018-06-25). DEVELOPMENT OF NICKEL HYDROXYAPATITE CATALYST FOR CO2 HYDROGENATION TO METHANE. ScholarBank@NUS Repository.||Abstract:||Control of strong metal-support interaction is critical in enhancing catalytic activity and product selectivity in catalytic heterogeneous reaction. In this study, hydroxyapatite supports were synthesized and impregnated with nickel at different ratio of oleic acid (OA) of OA0.5 and OA2.0 and no OA sample. CO2 hydrogenation to methane reaction was performed on these catalyst from 250-400°C at 1 atm. OA0.5 was found to be more active and selective than the other sample for the reaction. 70 hours of stable catalytic performance has been achieved with the OA0.5 catalyst. Further characterization techniques using XRD, H2-TPR, CO2-TPD, XPS and in-situ DRIFTS were performed on the catalyst samples. The amount of OA can induce and control the extent of strong metal-support interaction by partial decoration of HAP support around the periphery of the metallic Ni nanoparticle which prevent the nickel nanoparticle from sintering and accompanied electron transfer from support to nickel nanoparticle.||URI:||http://scholarbank.nus.edu.sg/handle/10635/146863|
|Appears in Collections:||Master's Theses (Open)|
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