Journal of the American Chemical Society· 2012Q1
Metal–Organic Framework Materials with Ultrahigh Surface Areas: Is the Sky the Limit?
- 1,935citations
- Q1SCImago
- 2012year
Short summary
New metal-organic frameworks (MOFs) achieve record-breaking experimental surface areas of ~7000 m²/g, enabled by supercritical CO₂ activation, and computational models suggest hypothetical areas could exceed 14600 m²/g with linker modifications.
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Key points
- Two new MOF materials achieved experimental BET surface areas of ~7000 m²/g.
- Supercritical CO₂ activation is crucial for preventing pore collapse and accessing ultrahigh surface areas.
- Computational models predict hypothetical MOF surface areas exceeding 14600 m²/g.
- Replacing phenyl linkers with acetylene moieties is key to achieving higher theoretical surface areas.
AI-generated from the title and abstract; the full text is not read.
Abstract
We have synthesized, characterized, and computationally simulated/validated the behavior of two new metal-organic framework (MOF) materials displaying the highest experimental Brunauer-Emmett-Teller (BET) surface areas of any porous materials reported to date (~7000 m(2)/g). Key to evacuating the initially solvent-filled materials without pore collapse, and thereby accessing the ultrahigh areas, is the use of a supercritical CO(2) activation technique. Additionally, we demonstrate computationally that by shifting from phenyl groups to "space efficient" acetylene moieties as linker expansion units, the hypothetical maximum surface area for a MOF material is substantially greater than previously envisioned (~14600 m(2)/g (or greater) versus ~10500 m(2)/g).
The authors' abstract, as published at the source. Journal of the American Chemical Society, 2012 · DOI ↗
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Field: Inorganic Chemistry
Inorganic ChemistryChemistry