Combustion synthesis of lanthanum oxide supported Cu,Ni, and CuNi nanoparticles for CO2 conversion reaction |
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| Affiliation: | 1. College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Fuxue Road 18, Changping District, Beijing 102249 China;2. College of Chemical Engineering, Fuzhou University, Fuzhou 350116, Fujian, China;3. Department of Chemical System Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 Japan;1. Department of Chemical Engineering, Biotechnology and Materials, FCFM, University of Chile, Santiago, Chile;2. Department of Chemical Engineering, University of Notre Dame, Notre Dame, USA;3. Department of Physics, University of Concepción, Concepción, Chile;4. School of Chemical Sciences and Engineering, Yachay Tech University, Urcuquí, Ecuador;1. Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317-51167, Iran;2. Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan, Iran;1. Collaborative Innovation Centre of the Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, 210044, Nanjing, PR China;2. College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, PR China;3. Jiangsu ShuangLiang Environmental Technology Co., Ltd., Jiangyin, 214400, PR China;4. Faculty of Environment and Life, Beijing University of Technology, Beijing, 100124, PR China;5. State Environmental Protection Key Laboratory of Atmospheric Physical Modeling and Pollution Control, China Energy Science and Technology Research Institute Co. Ltd., Nanjing 210023, China;6. School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China;1. State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, China;2. School of Mechanical Engineering and Automation, Fuzhou University, China;3. Fujian Provincial Collaborative Innovation Centre of High-End Equipment Manufacturing, Fuzhou, China |
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| Abstract: | The reverse water gas shift (RWGS) process is considered a feasible method for lowering greenhouse gas emissions by utilizing CO2 and converting it to CO. Herein, we evaluated the catalytic conversion of CO2 through the RWGS reaction over transition metal nanoparticles supported on lanthanum. Catalysts of selected active metals (Cu, Ni, and CuNi) on lanthanum oxide support were investigated in a packed bed tubular reactor within a temperature range of 100–600 °C to assess their catalytic activity and selectivity towards CO. The results of the catalyst's activity and stability experiments showed maximum CO2 conversions of 57%, 68% and 74% for Cu–La2O3, Ni–La2O3, and CuNi–La2O3, respectively, at 600 °C and excellent stability over a 1440-min time on stream (TOS) with a carbon deposition rate of less than 3 wt%. However, among all investigated catalysts, only the 1 wt% Cu–La2O3 catalyst displayed a CO selectivity of 100% at all the studied temperatures, whereas the nickel-containing catalysts showed selectivity for methane along with carbon monoxide. Furthermore, the morphological properties of the support and catalysts, as well as the effect of the reaction conditions on the catalysts surface, were studied using a variety of techniques, including XRD, TEM, SEM-EDX and TPR. The results showed promising potential for the application of transition metal catalysts on lanthanum oxide support for RWGS that could be extended to other hydrogenation reactions. |
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| Keywords: | Reverse water gas shift reaction CO selectivity Carbon deposition |
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