Controllable Assembly of Hierarchical Macroporous-Mesoporous LnFeO3 and Their Catalytic Performance in the CO + NO Reaction.
Langmuir
; 31(31): 8672-9, 2015 Aug 11.
Article
em En
| MEDLINE
| ID: mdl-26196258
ABSTRACT
A new synthesis strategy to prepare hierarchical macroporous-mesoporous materials employing poly(ethylene oxide)-poly(phenylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) as a single template and an acid adjusting agent was reported. There is a hierarchical structure including macropores with a size of 50-100 nm and mesopores in the macroporous walls with a size of 3-5 nm. The macroporous walls are composed of rare earth orthoferrite nanoparticles with a size of 5-10 nm. These hierarchically porous materials show high catalytic activities for the CO + NO reaction, and NO can be fully converted to N2 at temperatures as low as 350 °C, indicating their potential in the catalytic conversion of automotive exhaust gas and other catalysis-related fields. This synthesis strategy is a facile method for the preparation of hierarchical porous materials and may give us a guideline for the synthesis of functional materials with further catalytic applications.
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MEDLINE
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Ano de publicação:
2015
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Article