Reaction characteristics of Ce-based oxygen carrier for two-step production syngas and hydrogen through methane conversion and water splitting
The two-step steam methane reforming for production syngas and hydrogen was investigated by using Ce-based oxygen carriers (CeO2,CeO2-ZrO2,CeO2-Fe2O3) which were prepared by co-precipitation method and characterized by means of X-ray diffractometer and Raman spectroscopy.CH4 temperature programmed and isothermal reactions were adopted to test syngas production reactivity,and redox properties were evaluated by a successive redox cycle.The results showed that the incorporation of ZrO2 into CeO2 was found to be an effective approach for enhancing the reducibility of CeO2 in methane conversion reaction and redox performance,and the addition of Fe2O3 into CeO2 could obviously increase the amount of reactive oxygen species in CeO2-Fe2O3 and the yields of syngas and hydrogen reached maximum in the 3rd cycle,but the redox stability of CeO2-Fe2O3 needs to be enhanced.
Syngas Hydrogen Methane conversion Water splitting Ce-based oxygen carrier
Yonggang Wei Xing Zhu Kongzhai Li Yane Zheng Hua Wang
Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction Ministry of Education, Kunming University of Science and Technology, Kunming 650093, PR China;Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology,Kunming 650093, PR China
国际会议
厦门
英文
123-127
2012-12-28（万方平台首次上网日期，不代表论文的发表时间）