Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 131, Issue 1-3, Pages 289-293Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2010.01.004
Keywords
Alumina; Macroporous; Mesoporous; Hierarchically; Template
Categories
Funding
- National Natural Science Foundation of China (NSFC) [50725207, 20821003, 20873156]
- Ministry of Science and Technology (MOST) [2007CB936400, 2009CB930400]
- Chinese Academy of Sciences
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In this paper, we report a procedure using soft/hard dual templates to produce gamma-alumina with hierarchically ordered mesopores and macropores (HOMA). Polystyrene spheres colloidal crystals and block copolymer are sequentially used as templates for ordered macropores and mesopores, respectively. Both macropores and mesopores are ordered pores. The wall of cage-like 500 nm macropores is composed of ordered mesopores of 3.6 nm, and the walls of mesopores are composed of gamma-alumina. When loaded with Pt nanoparticles for CO oxidation, Pt/HOMA catalyst shows excellent catalytic properties. (C) 2010 Elsevier Inc. All rights reserved.
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