Study on catalytic performance of Cu-Mg-Al catalyst for hydrogen production by methanol cracking
BAO Zhe-yu1, ZHU Ming1,2, DU Ze-yu1, CHEN Xiao-rong1, MEI Hua1,2
1. College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China; 2. Catalytic Hydrogenation Engineering Technology Research Center, Jiangsu Nuomeng Chemical Co., Ltd., Nanjing 210009, China
Abstract: A series of Cu-Mg-Al catalysts with different Cu/Mg/Al molar ratio are prepared via co-precipitation method.Their catalytic performance for hydrogen production by methanol cracking is investigated in a fixed bed rector and their structure and physic-chemical properties are characterized by BET,XRD,H2-TPR,CO2-TPD,etc.The results show that Cu-Mg-Al catalyst with a Cu/Mg/Al molar ratio of 1:2:1 can enhance catalytic performance for hydrogen production by methanol cracking because it has an increased crystallinity of the precursor,a larger surface area,an enhanced reducibility and an improved alkalinity.The conversion rate of methanol can reach 99.28%,the gas yield can achieve 97.75% and the content of byproducts in liquid phase is as low as 1.25% when the reaction is performed over Cu1Mg2Al1 catalyst under the reaction conditions that the pressure is 1.0 MPa,reaction temperature at 280℃ and volume space velocity at 0.5 h-1.After experiencing 180 h of reaction,the catalyst does not show deactivation in the system.
包喆宇, 朱明, 杜泽宇, 陈晓蓉, 梅华. Cu-Mg-Al催化剂催化甲醇裂解制氢的研究[J]. 现代化工, 2019, 39(3): 166-170.
BAO Zhe-yu, ZHU Ming, DU Ze-yu, CHEN Xiao-rong, MEI Hua. Study on catalytic performance of Cu-Mg-Al catalyst for hydrogen production by methanol cracking. Modern Chemical Industry, 2019, 39(3): 166-170.
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