Reversible Dehydration Behavior Reveals Coordinatively Unsaturated Metal Sites in Microporous Aluminum Phosphonates

Journal Article · Wed Oct 01 00:00:00 EDT 2014 · Crystal Growth and Design

DOI:https://doi.org/10.1021/cg5005215· OSTI ID:1247158

Kinnibrugh, Tiffany L. ^[1]; Bakhmutov, Vladimir I. ^[1]; Clearfield, Abraham ^[1]

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1. Texas A & M Univ., College Station, TX (United States)

Incorporation of the same ligand into three different aluminum phenylenediphosphonates (Al(H₂O)(O₃PC₆H₄PO₃H) (1), Al-4(H₂O)(2)(O₃PC₆H₄PO₃)(3) (2), and Al-4(H₂O)(4)(O₃PC₆H₄PO₃)(2.84)(OH)(0.64) (3)) was accomplished by varying the synthetic conditions. The compounds have different sorption properties; however, all exhibit reversible dehydration behavior. The structures of the hydrated and dehydrated phases were determined from powder X-ray diffraction data. Compounds 2 and 3 were found to be microporous, while compound 1 was found to be nonporous. The stability of the dehydrated phase and the resulting porosity was found to be influenced by the change in the structure upon loss of water.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1247158
• Journal Information: Crystal Growth and Design, Vol. 14, Issue 10; ISSN 1528-7483
• Publisher: American Chemical Society
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE