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Title: Atomic layer deposition in a metal–organic framework: Synthesis, characterization, and performance of a solid acid

NU-1000, a zirconium-based metal-organic framework featuring mesoporous channels, has been post-synthetically metalated via atomic layer deposition in MOF (AIM) employing dimethylaluminum iso-propoxide ([AlMe 2 iOPr] 2 – DMAI), a milder precursor than widely used trimethylaluminum (AlMe 3 - TMA). The aluminum-modified NU-1000 (Al-NU-1000) has been characterized with a comprehensive suite of techniques that points to the formation of aluminum oxide clusters well dispersed through the framework and stabilized by confinement within small pores intrinsic to the NU-1000 structure. Experimental evidence allows for identification of spectroscopic similarities between Al-NU-1000 and γ-Al 2O 3. Density functional theory modeling provides structures and simulated spectra the relevance of which can be assessed via comparison to experimental IR and EXAFS data. As a result, the catalytic performance of Al-NU-1000 has been benchmarked against γ-Al 2O 3, with promising results in terms of selectivity.
ORCiD logo [1] ;  [2] ;  [2] ;  [3] ; ORCiD logo [4] ; ORCiD logo [4] ;  [4] ;  [3] ;  [4] ; ORCiD logo [5] ;  [4] ; ORCiD logo [2] ; ORCiD logo [2] ;  [1] ; ORCiD logo [6]
  1. Northwestern Univ., Evanston, IL (United States)
  2. Univ. of Minnesota, Minneapolis, MN (United States)
  3. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); TU Munchen, Garching (Germany)
  6. Northwestern Univ., Evanston, IL (United States); King Abdulaziz Univ., Jeddah (Saudi Arabia)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 29; Journal Issue: 3; Journal ID: ISSN 0897-4756
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; alumina; aluminum; ethanol dehydration; metal-organic framework; atomic layer deposition
OSTI Identifier: