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Efficient capture and storage of ammonia in robust aluminium-based metal-organic frameworks

DOI: 10.1038/s42004-023-00850-4 DOI Help

Authors: Lixia Guo (University of Manchester) , Joseph Hurd (University of Manchester) , Meng He (University of Manchester) , Wanpeng Lu (University of Manchester) , Jiangnan Li (University of Manchester) , Danielle Crawshaw (University of Manchester) , Mengtian Fan (University of Manchester) , Sergey A. Sapchenko (University of Manchester) , Yinlin Chen (University of Manchester) , Xiangdi Zeng (University of Manchester) , Meredydd Kippax-Jones (University of Manchester; Diamond Light Source) , Wenyuan Huang (University of Manchester) , Zhaodong Zhu (University of Manchester) , Pascal Manuel (ISIS Facility) , Mark D. Frogley (Diamond Light Source) , Daniel Lee (University of Manchester) , Martin Schroeder (University of Manchester) , Sihai Yang (University of Manchester)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Communications Chemistry , VOL 6

State: Published (Approved)
Published: March 2023
Diamond Proposal Number(s): 30398

Open Access Open Access

Abstract: The development of stable sorbent materials to deliver reversible adsorption of ammonia (NH3) is a challenging task. Here, we report the efficient capture and storage of NH3 in a series of robust microporous aluminium-based metal-organic framework materials, namely MIL-160, CAU-10-H, Al-fum, and MIL-53(Al). In particular, MIL-160 shows high uptakes of NH3 of 4.8 and 12.8 mmol g−1 at both low and high pressure (0.001 and 1.0 bar, respectively) at 298 K. The combination of in situ neutron powder diffraction, synchrotron infrared micro-spectroscopy and solid-state nuclear magnetic resonance spectroscopy reveals the preferred adsorption domains of NH3 molecules in MIL-160, with H/D site-exchange between the host and guest and an unusual distortion of the local structure of [AlO6] moieties being observed. Dynamic breakthrough experiments confirm the excellent ability of MIL-160 to capture of NH3 with a dynamic uptake of 4.2 mmol g−1 at 1000 ppm. The combination of high porosity, pore aperture size and multiple binding sites promotes the significant binding affinity and capacity for NH3, which makes it a promising candidate for practical applications.

Journal Keywords: Metal–organic frameworks; Porous materials; Solid-state chemistry

Subject Areas: Chemistry, Materials

Instruments: B22-Multimode InfraRed imaging And Microspectroscopy

Other Facilities: WISH at ISIS

Added On: 28/03/2023 21:57


Discipline Tags:

Chemistry Materials Science Chemical Engineering Engineering & Technology Metal-Organic Frameworks Metallurgy Organometallic Chemistry

Technical Tags:

Spectroscopy Infrared Spectroscopy Synchtron-based Fourier Transform Infrared Spectroscopy (SR-FTIR)