Layered Mg-Al spinel supported Ce-Fe-Zr-O oxygen carriers for chemical looping reforming

• 作者: Chunqiang Lu Haiwen Xu Jiangyong Yuan Kongzhai Li Kun Yang Xing Zhu Yannan Zhao
• 来源期刊: 中国化学工程学报（英文版）
• 年，卷（期）: 2020,（10）
• 所属期刊栏目: Energy, Resources and Environmental Technology
• 页码范围: 2668-2676
• 页数: 9页
• 语种: 英文

摘要

A series of layered Mg-Al spinel supported Ce-Fe-Zr-O oxygen carriers were prepared for co-production of syngas and pure hydrogen via chemical looping steam reforming (CLSR).The presence of magnesium-aluminum layered double oxides (MgAl-LDO) significantly increases the specific surface area of the mixed oxides,reduces the particle size of CeO2-based solid solution and promotes the dispersion of free Fe2O3.When reacting with methane,MgAl-LDO supported oxygen carrier shows much lower temperature for methane oxidation than the pure Ce-Fe-Zr-O sample,indicating enhanced low-temperature reactivity.Among different Ce-Fe-Zr-O(x)/MgAl-LDO samples,the Ce-Fe-Zr-O(40 wt％)/MgAl-LDO sample shows the best performance for the selective oxidation of methane to syngas and the H2 production by water splitting.After a long period of high temperature redox experiment,the Ce-Fe-Zr-O(40 wt％)/MgAl-LDO oxygen carrier still shows high activity for syngas generation.The comparison on the morphology of the fresh and cycled oxygen carriers indicates that the Mg-Al spinel support still forms a stable skeleton structure with high dispersion of active components on the surface after the long-term cycling,which contributes to excellent redox stability of the Ce-Fe-Zr-O(40 wt％)/MgAl-LDO oxygen carrier.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Jiangyong Yuan		1	0	0.0	0.0
2	Yannan Zhao		1	0	0.0	0.0
3	Haiwen Xu		1	0	0.0	0.0
4	Chunqiang Lu		1	0	0.0	0.0
5	Kun Yang		1	0	0.0	0.0
6	Xing Zhu		1	0	0.0	0.0
7	Kongzhai Li		1	0	0.0	0.0