High adsorption of ammonia in a titanium-based metal–organic framework†
Meng
He, 
a
Danielle
Crawshaw,
a
Yujie
Ma,
a
Svemir
Rudić,
e
Mark D.
Frogley,
c
Martin
Schröder
*a
and
Sihai
Yang
*ab
a
Danielle
Crawshaw,
a
Yujie
Ma,
a
Svemir
Rudić,
e
Mark D.
Frogley,
c
Martin
Schröder
*a
and
Sihai
Yang
*ab
Abstract
We report the high adsorption of NH3 in a titanium-based metal–organic framework, MFM-300(Ti), comprising extended [TiO6]∞ chains linked by biphenyl-3,3′,5,5′-tetracarboxylate ligands. At 273 K and 1 bar, MFM-300(Ti) shows an exceptional NH3 uptake of 23.4 mmol g−1 with a record-high packing density of 0.84 g cm−3. Dynamic breakthrough experiments confirm the excellent uptake and separation of NH3 at low concentration (1000 ppm). The combination of in situ neutron powder diffraction and spectroscopic studies reveal strong, yet reversible binding interactions of NH3 to the framework oxygen sites.
- This article is part of the themed collection: CC 60th Anniversary Authors Collection
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