Sustainable functionalized metal-organic framework NH2-MIL-101(Al) for CO2 separation under cryogenic conditions

Babar M 1 , Mubashir M 2 , Mukhtar A 3 , Saqib S 4 , Ullah S 5 , Bustam MA 1 Show all authors , Show PL 6

Affiliations 

  • 1 Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610, Perak, Malaysia
  • 2 Department of Petroleum Engineering, Faculty of Computing, Engineering & Technology, School of Engineering, Asia Pacific University of Technology, and Innovation, 57000, Kuala Lumpur, Malaysia
  • 3 Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 32610, Perak, Malaysia; Department of Chemical Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad, Punjab, 38000, Pakistan
  • 4 Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defense Road, Punjab, 54000, Pakistan
  • 5 Department of Chemistry, College of Science, King Khalid University, Abha, 61413, Saudi Arabia
  • 6 Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia. Electronic address: pauloke.show@nottingham.edu.my
Environ Pollut, 2021 Jun 15;279:116924.
PMID: 33751951 DOI: 10.1016/j.envpol.2021.116924

Abstract

In this study, a sustainable NH2-MIL-101(Al) is synthesized and subjected to characterization for cryogenic CO2 adsorption, isotherms, and thermodynamic study. The morphology revealed a highly porous surface. The XRD showed that NH2-MIL-101(Al) was crystalline. The NH2-MIL-101(Al) decomposes at a temperature (>500 °C) indicating excellent thermal stability. The BET investigation revealed the specific surface area of 2530 m2/g and the pore volume of 1.32 cm3/g. The CO2 adsorption capacity was found to be 9.55 wt% to 2.31 wt% within the investigated temperature range. The isotherms revealed the availability of adsorption sites with favorable adsorption at lower temperatures indicating the thermodynamically controlled process. The thermodynamics showed that the process is non-spontaneous, endothermic, with fewer disorders, chemisorption. Finally, the breakthrough time of NH2-MIL-101(Al) is 31.25% more than spherical glass beads. The CO2 captured by the particles was 2.29 kg m-3. The CO2 capture using glass packing was 121% less than NH2-MIL-101(Al) under similar conditions of temperature and pressure.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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