期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 21, 期 25, 页码 9312-9318出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm10336a
关键词
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资金
- EaStCHEM
- Russell Trust
- National Science Foundation of China [21007011]
- Ministry of Education in China [20100071120012]
- EPSRC
- SUPERGEN
The reduction of a series of crystalline mesoporous metal oxides, CeO2, Co3O4, Cr2O3, CuO, beta-MnO2, Mn3O4, and NiO, was investigated using hydrogen temperature-programmed reduction (H-2-TPR). CeO2 and Cr2O3 could not be reduced. Mesoporous Mn3O4 and NiO are reduced at almost the same temperature as their bulk counterparts, and mesoporous Co3O4, CuO, and beta-MnO2 are reduced at lower temperatures than the corresponding bulk materials. In particular, mesoporous Co3O4 and beta-MnO2 undergo reduction to CoO and Mn3O4 while preserving the mesostructure. Further reduction of CoO and Mn3O4, NiO, and CuO does not form mesoporous metal: in the case of CuO, a mesoporous intergrowth of Cu/Cu2O is obtained, and for the rest metal oxides, particles are formed.
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