Water enhanced methanol decomposition for simultaneous heat recovery and ready-to-use synthesis gas production over CO2 capture enhanced Ni/zeolite 4A catalyst |
| |
| Affiliation: | 1. School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, PR China;2. Shandong Chambroad Petrochemicals Co., Ltd, Binzhou, 256500, PR China;1. School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China;2. Yunnan Province Key Lab of Wood Adhesives and Glued Products & Key Lab for Forest Resources Conservation and Utilization in the Southwest Mountains, Southwest Forestry University, Kunming 650224, China;3. State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming, 650091, China;1. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Centro Atómico Bariloche (CNEA), Av. Bustillo 9500, R8402AGP, S.C. de Bariloche, Río Negro, Argentina;2. Department of Chemistry, University of Burgos, 09001, Burgos, Spain;3. International Research Center in Critical Raw Materials for Advanced Industrial Technologies (ICCRAM), University of Burgos, 09001 Burgos, Spain;4. Universidad Nacional de Cuyo (Instituto Balseiro)-Centro Atómico Bariloche (CNEA), Av. Bustillo 9500, R8402AGP, S.C. de Bariloche, Río Negro, Argentina;1. Department of Physics, School of Basics and Applied Sciences, Central University of Tamil Nadu, Neelakudi Campus, Thiruvarur, 626001, Tamil Nadu, India;2. Simulation Centre for Atomic and Nano MATerials(SCANMAT), Central University of Tamil Nadu, Neelakudi Campus, Thiruvarur, 626001, Tamil Nadu, India;1. School of Environmental Science and Engineering / Tianjin Key Lab of Biomass-wastes Utilization, Tianjin University, Tianjin 300072, China;2. Department of Civil Engineering, Pakistan Institute of Engineering Technology, Multan Pakistan;3. School of Engineering, The University of Toledo, Ohio, USA;4. School of Engineering RMIT University Melbourne Victoria 3000, Australia;5. School of Chemical Engineering of Technology, Tianjin University, Tianjin 300350, China |
| |
| Abstract: | Methanol decomposition is considered as a “one stone two birds” approach for simultaneously recovering waste heat and affording synthesis gas. However, this approach requires efficient catalysts with high CO selectivity and low selectivity to byproducts. Herein, a rational design of CO2 capture enhanced Ni/zeolite 4 A catalyst for synthesis gas production by water enhanced methanol decomposition is reported. 5%-Ni/NaA-500 catalyst achieves the YH2 of 80.6%, YCO of 76.2%, H2/CO molar ratio of 2.11, high stability, low selectivity to CO2 and CH4, and no coke at 325 °C. Ni atoms highly disperse on the surface and microporous of zeolite 4 A, and the strong interaction between Ni atoms and zeolite 4 A inhibits the reduction of Ni atoms. Consequently, Ni3+, Ni2+ and Ni0 coexist in 5%-Ni/NaA-500, and the redox couples of Ni3+?Ni2+, Ni2+?Ni0, and Ni3+?Ni0 will enhance the redox processes during methanol decomposition. CO2 capture capacity of x%-Ni/NaA-Y below 350 °C promotes the reverse water gas shift reaction by concentrating CO2 molecules, which hence increases CO selectivity and declines the selectivity to byproducts. The reaction path follows CH3OH→CH3O→CH2O→CHO→CO. This work will pave the way to industrial applications that combine ready-to-use synthesis gas production and heat recovery. |
| |
| Keywords: | Water enhanced methanol decomposition Ni/zeolite 4A catalyst Synthesis gas Heat recovery |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
