Highly CO selective Cu(I)-doped MIL-100(Fe) adsorbent with high CO/CO2 selectivity due to Π complexation: Effects of Cu(I) loading and activation temperature

The Ky Vo; Youn Sang Bae; Bong Jun Chang; Su Young Moon; Jeong Hoon Kim; Jinsoo Kim

doi:10.1016/j.micromeso.2018.07.024

Highly CO selective Cu(I)-doped MIL-100(Fe) adsorbent with high CO/CO₂ selectivity due to Π complexation: Effects of Cu(I) loading and activation temperature

The Ky Vo, Youn Sang Bae, Bong Jun Chang, Su Young Moon, Jeong Hoon Kim, Jinsoo Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

Cu(I) doping of octahedral MIL-100(Fe) was successfully performed by means of impregnation and consequent reduction under vacuum conditions. Although MIL-100(Fe) adsorbed CO₂ better than CO, Cu(I)@MIL-100(Fe) showed selective CO adsorption compared to CO₂ owing to π complexation between CO and Cu(I). Effects of Cu(I) loading concentration, activation temperature, and adsorption temperature upon CO/CO₂ adsorption properties were systematically investigated. The adsorption behaviors of CO and CO₂ on MIL-100(Fe) and Cu(I)@MIL-100(Fe) were well described by the dual-site Langmuir–Freundlich (DSLF) model. Ideal adsorbed solution theory (IAST) was used to predict adsorption isotherms of equimolar CO and CO₂ mixtures and to predict CO/CO₂ selectivities as a function of bulk pressure. The obtained results showed that 45 wt% Cu(I)-doped MIL-100(Fe) had CO adsorption capacity of 3.10 mmol g⁻¹ and CO/CO₂ selectivity of 420 at 298 K and 1 bar. In addition, a large CO working capacity of 1.39 mmol g⁻¹ was observed for 45 wt% Cu(I)-doped MIL-100(Fe) in the pressure range of 10–100 kPa. Cu(I)-doped MIL-100(Fe) thus appears promising as an adsorbent material for effective CO/CO₂ separation.

Original language	English
Pages (from-to)	17-24
Number of pages	8
Journal	Microporous and Mesoporous Materials
Volume	274
DOIs	https://doi.org/10.1016/j.micromeso.2018.07.024
Publication status	Published - 2019 Jan 15

Bibliographical note

Funding Information:
This work was supported by “Next Generation Carbon Upcycling Project” (NRF-2017M1A2A2043451) and the Engineering Research Center of Excellence Program (NRF-2014R1A5A1009799) through the National Research Foundation funded by the Ministry of Science and ICT, Republic of Korea.

Funding Information:
This work was supported by “ Next Generation Carbon Upcycling Project ” ( NRF-2017M1A2A2043451 ) and the Engineering Research Center of Excellence Program ( NRF-2014R1A5A1009799 ) through the National Research Foundation funded by the Ministry of Science and ICT, Republic of Korea.

Publisher Copyright:
© 2018 Elsevier Inc.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials

Access to Document

10.1016/j.micromeso.2018.07.024

Cite this

@article{86e547bccc37463a9c2ec7c44666d579,

title = "Highly CO selective Cu(I)-doped MIL-100(Fe) adsorbent with high CO/CO2 selectivity due to Π complexation: Effects of Cu(I) loading and activation temperature",

abstract = "Cu(I) doping of octahedral MIL-100(Fe) was successfully performed by means of impregnation and consequent reduction under vacuum conditions. Although MIL-100(Fe) adsorbed CO2 better than CO, Cu(I)@MIL-100(Fe) showed selective CO adsorption compared to CO2 owing to π complexation between CO and Cu(I). Effects of Cu(I) loading concentration, activation temperature, and adsorption temperature upon CO/CO2 adsorption properties were systematically investigated. The adsorption behaviors of CO and CO2 on MIL-100(Fe) and Cu(I)@MIL-100(Fe) were well described by the dual-site Langmuir–Freundlich (DSLF) model. Ideal adsorbed solution theory (IAST) was used to predict adsorption isotherms of equimolar CO and CO2 mixtures and to predict CO/CO2 selectivities as a function of bulk pressure. The obtained results showed that 45 wt% Cu(I)-doped MIL-100(Fe) had CO adsorption capacity of 3.10 mmol g−1 and CO/CO2 selectivity of 420 at 298 K and 1 bar. In addition, a large CO working capacity of 1.39 mmol g−1 was observed for 45 wt% Cu(I)-doped MIL-100(Fe) in the pressure range of 10–100 kPa. Cu(I)-doped MIL-100(Fe) thus appears promising as an adsorbent material for effective CO/CO2 separation.",

author = "Vo, {The Ky} and Bae, {Youn Sang} and Chang, {Bong Jun} and Moon, {Su Young} and Kim, {Jeong Hoon} and Jinsoo Kim",

note = "Funding Information: This work was supported by “Next Generation Carbon Upcycling Project” (NRF-2017M1A2A2043451) and the Engineering Research Center of Excellence Program (NRF-2014R1A5A1009799) through the National Research Foundation funded by the Ministry of Science and ICT, Republic of Korea. Funding Information: This work was supported by “ Next Generation Carbon Upcycling Project ” ( NRF-2017M1A2A2043451 ) and the Engineering Research Center of Excellence Program ( NRF-2014R1A5A1009799 ) through the National Research Foundation funded by the Ministry of Science and ICT, Republic of Korea. Publisher Copyright: {\textcopyright} 2018 Elsevier Inc.",

year = "2019",

month = jan,

day = "15",

doi = "10.1016/j.micromeso.2018.07.024",

language = "English",

volume = "274",

pages = "17--24",

journal = "Microporous Materials",

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TY - JOUR

T1 - Highly CO selective Cu(I)-doped MIL-100(Fe) adsorbent with high CO/CO2 selectivity due to Π complexation

T2 - Effects of Cu(I) loading and activation temperature

AU - Vo, The Ky

AU - Bae, Youn Sang

AU - Chang, Bong Jun

AU - Moon, Su Young

AU - Kim, Jeong Hoon

AU - Kim, Jinsoo

N1 - Funding Information: This work was supported by “Next Generation Carbon Upcycling Project” (NRF-2017M1A2A2043451) and the Engineering Research Center of Excellence Program (NRF-2014R1A5A1009799) through the National Research Foundation funded by the Ministry of Science and ICT, Republic of Korea. Funding Information: This work was supported by “ Next Generation Carbon Upcycling Project ” ( NRF-2017M1A2A2043451 ) and the Engineering Research Center of Excellence Program ( NRF-2014R1A5A1009799 ) through the National Research Foundation funded by the Ministry of Science and ICT, Republic of Korea. Publisher Copyright: © 2018 Elsevier Inc.

PY - 2019/1/15

Y1 - 2019/1/15

N2 - Cu(I) doping of octahedral MIL-100(Fe) was successfully performed by means of impregnation and consequent reduction under vacuum conditions. Although MIL-100(Fe) adsorbed CO2 better than CO, Cu(I)@MIL-100(Fe) showed selective CO adsorption compared to CO2 owing to π complexation between CO and Cu(I). Effects of Cu(I) loading concentration, activation temperature, and adsorption temperature upon CO/CO2 adsorption properties were systematically investigated. The adsorption behaviors of CO and CO2 on MIL-100(Fe) and Cu(I)@MIL-100(Fe) were well described by the dual-site Langmuir–Freundlich (DSLF) model. Ideal adsorbed solution theory (IAST) was used to predict adsorption isotherms of equimolar CO and CO2 mixtures and to predict CO/CO2 selectivities as a function of bulk pressure. The obtained results showed that 45 wt% Cu(I)-doped MIL-100(Fe) had CO adsorption capacity of 3.10 mmol g−1 and CO/CO2 selectivity of 420 at 298 K and 1 bar. In addition, a large CO working capacity of 1.39 mmol g−1 was observed for 45 wt% Cu(I)-doped MIL-100(Fe) in the pressure range of 10–100 kPa. Cu(I)-doped MIL-100(Fe) thus appears promising as an adsorbent material for effective CO/CO2 separation.

AB - Cu(I) doping of octahedral MIL-100(Fe) was successfully performed by means of impregnation and consequent reduction under vacuum conditions. Although MIL-100(Fe) adsorbed CO2 better than CO, Cu(I)@MIL-100(Fe) showed selective CO adsorption compared to CO2 owing to π complexation between CO and Cu(I). Effects of Cu(I) loading concentration, activation temperature, and adsorption temperature upon CO/CO2 adsorption properties were systematically investigated. The adsorption behaviors of CO and CO2 on MIL-100(Fe) and Cu(I)@MIL-100(Fe) were well described by the dual-site Langmuir–Freundlich (DSLF) model. Ideal adsorbed solution theory (IAST) was used to predict adsorption isotherms of equimolar CO and CO2 mixtures and to predict CO/CO2 selectivities as a function of bulk pressure. The obtained results showed that 45 wt% Cu(I)-doped MIL-100(Fe) had CO adsorption capacity of 3.10 mmol g−1 and CO/CO2 selectivity of 420 at 298 K and 1 bar. In addition, a large CO working capacity of 1.39 mmol g−1 was observed for 45 wt% Cu(I)-doped MIL-100(Fe) in the pressure range of 10–100 kPa. Cu(I)-doped MIL-100(Fe) thus appears promising as an adsorbent material for effective CO/CO2 separation.

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