期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 187, 期 -, 页码 108-113出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2013.12.025
关键词
Aerogel; Supramolecular gel; Porous materials; Acetylacetonate; Coordination polymer
类别
资金
- 973 Program [2012CB821701, 2014CB845602]
- NSFC [21273007, 21350110212, 91222201, U0934003]
Organic-inorganic hybrid aerogels are receiving growing attention due to their high tuneability. In this contribution a novel type of organic-inorganic hybrid aerogels with high micro- and mesoporosity have been prepared successfully from a bridging bis(acetylacetonate) ligand, 3,4-diacetyl-2,5-dioxohexane, and trivalent metal ions (Al3+ and Cr3+). The metal-acetylacetonate aerogels compose of nanoscale metal-organic particles, which aggregate to form the gel matrix. N-2 sorption shows that the aerogels have high BET surface areas up to similar to 1100 m(2) g(-1) and hierarchical porosity. The porosity can be altered by introducing of second divalent metal ions into the aerogel. The aerogels show ability to adsorb various gases (H-2, CO2 and CH4) and vapors (MeOH and EtOH). Water sorption measurements reveal that the aerogels have relatively hydrophobic pore surface. (C) 2013 Elsevier Inc. All rights reserved.
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