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Solvent-Free Synthesis of MIL-101(Cr) for CO 2 Gas Adsorption: The Effect of Metal Precursor and Molar Ratio

Author

Listed:
  • Kok Chung Chong

    (Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman (UTAR), Jalan Sungai Long, Kajang 43000, Selangor, Malaysia
    Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman (UTAR), Kampar 31900, Perak, Malaysia)

  • Pui San Ho

    (Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman (UTAR), Jalan Sungai Long, Kajang 43000, Selangor, Malaysia)

  • Soon Onn Lai

    (Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman (UTAR), Jalan Sungai Long, Kajang 43000, Selangor, Malaysia
    Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman (UTAR), Kampar 31900, Perak, Malaysia)

  • Sze Shin Lee

    (Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman (UTAR), Jalan Sungai Long, Kajang 43000, Selangor, Malaysia
    Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman (UTAR), Kampar 31900, Perak, Malaysia)

  • Woei Jye Lau

    (Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia)

  • Shih-Yuan Lu

    (Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan)

  • Boon Seng Ooi

    (School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, Seri Ampangan, Nibong Tebal 14300, Pulau Pinang, Malaysia)

Abstract

MIL-101(Cr), a subclass of metal–organic frameworks (MOFs), is a promising adsorbent for carbon dioxide (CO 2 ) removal due to its large pore volume and high surface area. Solvent-free synthesis of MIL-101(Cr) was employed in this work to offer a green alternative to the current approach of synthesizing MIL-101(Cr) using a hazardous solvent. Characterization techniques including XRD, SEM, and FTIR were employed to confirm the formation of pure MIL-101(Cr) synthesized using a solvent-free method. The thermogravimetric analysis revealed that MIL-101(Cr) shows high thermal stability up to 350 °C. Among the materials synthesized, MIL-101(Cr) at the molar ratio of chromium precursor to terephthalic organic acid of 1:1 possesses the highest surface area and greatest pore volume. Its BET surface area and total pore volume are 1110 m 2 /g and 0.5 cm 3 /g, respectively. Correspondingly, its CO 2 adsorption capacity at room temperature is the highest (18.8 mmol/g), suggesting it is a superior adsorbent for CO 2 removal. The textural properties significantly affect the CO 2 adsorption capacity, in which large pore volume and high surface area are favorable for the adsorption mechanism.

Suggested Citation

  • Kok Chung Chong & Pui San Ho & Soon Onn Lai & Sze Shin Lee & Woei Jye Lau & Shih-Yuan Lu & Boon Seng Ooi, 2022. "Solvent-Free Synthesis of MIL-101(Cr) for CO 2 Gas Adsorption: The Effect of Metal Precursor and Molar Ratio," Sustainability, MDPI, vol. 14(3), pages 1-12, January.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:3:p:1152-:d:729051
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