MxOy (M = Mg,Zr, La,Ce) modified Ni/CaO dual functional materials for combined CO2 capture and hydrogenation |
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| Affiliation: | 1. State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, No.99 Shangda Road, Shanghai 200444, China;2. School of Materials Science, Shanghai Dianji University, No.300 Shuihua Road, Shanghai 201306, China;1. College of Chemistry and Chemical Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, PR China;2. School of Chemistry and Chemical Engineering, Queen''s University Belfast, Belfast BT7 1NN, UK;3. Department of Chemistry, University College London, London WC1H 0AJ, UK;4. Harwell XPS, Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot OX11 0FA, UK;5. State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China;6. Department of Chemical Engineering and Analytical Science, University of Manchester, Manchester M13 9PL, UK;7. Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK;8. The University of Manchester at Harwell, Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK;9. UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell OX11 0FA, UK;1. State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, People''s Republic of China;2. Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China;1. School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT7 1NN, UK;2. State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;3. UK Catalysis Hub, Research Complex at Harwell, Didcot OX11 0FA, UK;4. Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK;5. ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Didcot OX11 0QX, UK;6. School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK;1. School of Engineering and Computer Science, University of Hull, Hull, HU6 7RX, UK;2. School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China;3. School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2037, Australia;4. School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast, BT7 1NN, UK;1. Key Laboratory of Low-grade Energy Utilization Technologies and Systems of Ministry of Education, School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China;2. Energy and Power Theme, School of Water, Energy and Environment, Cranfield University, Bedford, Bedfordshire MK43 0AL, UK;3. School of Chemistry and Chemical Engineering, Queen''s University Belfast, Belfast BT7 1NN, UK |
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| Abstract: | The integrated CO2 capture and utilization has recently attracted attention as a promising approach to reduce CO2 emissions as well as produce value-added chemicals and fuels. Herein, metal oxides (MxOy, M = Mg, Zr, La, and Ce) modified Ni/CaO dual functional materials (M-Ni/Ca DFMs) were synthesized and applied to the combined CO2 capture and hydrogenation using a single reactor at one temperature. The La–Ni/Ca showed the highest CO2 adsorption capacity (13.8 mmol/g), CO2 conversion (64.3%) and CO yield (8.7 mmol/g). Results indicated that the addition of metal oxides increased the number of basic sites which played important role in efficient CO2 capture. The high activities of M-Ni/Ca were attributed to the formation of highly dispersed small-sized Ni particles. Furthermore, the La–Ni/Ca exhibited excellent cyclic stability after 20 cycles due to the La2O3 as a physical barrier and a support for inhibiting the growth and sintering of CaO and Ni particles. |
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| Keywords: | Ni/CaO Metal oxides modification Dual functional materials Reverse water-gas shift |
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