High ammonia adsorption in copper-carboxylate materials: host-guest interactions and crystalline-amorphous-crystalline phase transitions

  • Wanpeng Lu
  • , Yinlin Chen
  • , Zi Wang
  • , Lixia Guo
  • , Jin Chen
  • , Yujie Ma
  • , Weiyao Li
  • , Jiangnan Li
  • , Meng He
  • , Mengtian Fan
  • , Alena M. Sheveleva
  • , Floriana Tuna
  • , Eric J. L. Mcinnes
  • , Mark D. Frogley
  • , Philip A. Chater
  • , Catherine Dejoie
  • , Martin Schröder
  • , Sihai Yang

Research output: Contribution to journalArticlepeer-review

Abstract

The development of materials for ammonia (NH3) storage is an important and challenging task. Here, we report the high NH3 uptake in a series of copper-carboxylate materials, namely MFM-100, MFM-101, MFM-102, MFM-126, MFM-127, MFM-190(F), MFM-170, and Cu-MOP-1a. At 273 K and 1 bar, MFM-101 shows an exceptional uptake of 21.9 mmol g−1. X-ray pair distribution function analysis reveals an unusual crystalline-amorphous-crystalline phase transition for the isoreticular MFM-100, MFM-101 and MFM-102 upon adsorption and desorption of NH3 followed by regeneration in water. In situ X-ray diffraction, synchrotron infrared micro-spectroscopy, and electron paramagnetic resonance spectroscopy are employed to elucidate the presence of strong Cu(II)⋯NH3 interactions and changes in coordination at the [Cu2(O2CR)4] (R = di-, tri-, and tetra-phenyl ligands) paddlewheel.
Original languageEnglish
Pages (from-to)12385-12388
JournalChem. Comm.
Volume60
Issue number85
DOIs
Publication statusPublished - 16 Sept 2024

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