Adsorption properties of HKUST-1 toward hydrogen and other small molecules monitored by IR

Details

Serval ID
serval:BIB_3FCB09D5D176
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Adsorption properties of HKUST-1 toward hydrogen and other small molecules monitored by IR
Journal
Phys Chem Chem Phys
Author(s)
Bordiga  S., Regli  L., Bonino  F., Groppo  E., Lamberti  C., Xiao  B., Wheatley  P. S., Morris  R. E., Zecchina  A.
ISSN
1463-9076 (Print)
Publication state
Published
Issued date
06/2007
Volume
9
Number
21
Pages
2676-85
Notes
Journal Article
Research Support, Non-U.S. Gov't
Review --- Old month value: Jun 7
Abstract
Among microporous systems metal organic frameworks are considered promising materials for molecular adsorption. In this contribution infrared spectroscopy is successfully applied to highlight the positive role played by coordinatively unsaturated Cu2+ ions in HKUST-1, acting as specific interaction sites. A properly activated material, obtained after solvent removal, is characterized by a high fraction of coordinatively unsaturated Cu2+ ions acting as preferential adsorption sites that show specific activities towards some of the most common gaseous species (NO, CO2, CO, N2 and H2). From a temperature dependent IR study, it has been estimated that the H2 adsorption energy is as high as 10 kJ mol(-1). A very complex spectral evolution has been observed upon lowering the temperature. A further peculiarity of this material is the fact that it promotes ortho-para conversion of the adsorbed H2 species.
Keywords
Adsorption Carbon Dioxide/*chemistry Copper/*chemistry Hydrogen/*chemistry Nitric Oxide/*chemistry Nitrogen/*chemistry Organometallic Compounds/*chemistry Sensitivity and Specificity Spectrophotometry, Infrared/methods Surface Properties Temperature
Pubmed
Web of science
Create date
25/01/2008 14:10
Last modification date
20/08/2019 14:37
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