Simultaneous adsorption of H2S and CO2 on triamine-grafted pore-expanded mesoporous MCM-41 silica

Youssef Belmabkhout; Nicolas Heymans; Guy De Weireld; Abdelhamid Sayari

doi:10.1021/ef1015704

Simultaneous adsorption of H₂S and CO₂ on triamine-grafted pore-expanded mesoporous MCM-41 silica

Youssef Belmabkhout, Nicolas Heymans, Guy De Weireld, Abdelhamid Sayari^*

^*Corresponding author for this work

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

94 Scopus citations

Abstract

The feasibility of using triamine-grafted pore-expanded mesoporous MCM-41 silica (TRI-PE-MCM-41) as a potential adsorbent for simultaneous removal of CO₂ and H₂S was investigated. Adsorption isotherms of CO₂ and H₂S were measured at different temperatures, whereas adsorption at low H₂S concentrations from 700 to 10000 ppm with balance CO₂ was studied at 298 K. It was found that both CO ₂ and H₂S adsorb and the selectively toward H₂S versus CO₂ decreases at an increasing H₂S concentration. Because TRI-PE-MCM-41 hardly adsorbs any of the common gases, such as CH ₄, H₂, N₂, O₂, and CO, it was inferred that this material may be suitable for the purification of a variety of gas streams containing CO₂ and H₂S. These findings lay the ground for the development of a single-stage process for the removal of CO₂ and H₂S from biogas, using amine-supported PE-MCM-41.

Original language	English (US)
Pages (from-to)	1310-1315
Number of pages	6
Journal	Energy and Fuels
Volume	25
Issue number	3
DOIs	https://doi.org/10.1021/ef1015704
State	Published - Mar 17 2011

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology

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title = "Simultaneous adsorption of H2S and CO2 on triamine-grafted pore-expanded mesoporous MCM-41 silica",

abstract = "The feasibility of using triamine-grafted pore-expanded mesoporous MCM-41 silica (TRI-PE-MCM-41) as a potential adsorbent for simultaneous removal of CO2 and H2S was investigated. Adsorption isotherms of CO2 and H2S were measured at different temperatures, whereas adsorption at low H2S concentrations from 700 to 10000 ppm with balance CO2 was studied at 298 K. It was found that both CO 2 and H2S adsorb and the selectively toward H2S versus CO2 decreases at an increasing H2S concentration. Because TRI-PE-MCM-41 hardly adsorbs any of the common gases, such as CH 4, H2, N2, O2, and CO, it was inferred that this material may be suitable for the purification of a variety of gas streams containing CO2 and H2S. These findings lay the ground for the development of a single-stage process for the removal of CO2 and H2S from biogas, using amine-supported PE-MCM-41.",

author = "Youssef Belmabkhout and Nicolas Heymans and {De Weireld}, Guy and Abdelhamid Sayari",

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T1 - Simultaneous adsorption of H2S and CO2 on triamine-grafted pore-expanded mesoporous MCM-41 silica

AU - Belmabkhout, Youssef

AU - Heymans, Nicolas

AU - De Weireld, Guy

AU - Sayari, Abdelhamid

PY - 2011/3/17

Y1 - 2011/3/17

N2 - The feasibility of using triamine-grafted pore-expanded mesoporous MCM-41 silica (TRI-PE-MCM-41) as a potential adsorbent for simultaneous removal of CO2 and H2S was investigated. Adsorption isotherms of CO2 and H2S were measured at different temperatures, whereas adsorption at low H2S concentrations from 700 to 10000 ppm with balance CO2 was studied at 298 K. It was found that both CO 2 and H2S adsorb and the selectively toward H2S versus CO2 decreases at an increasing H2S concentration. Because TRI-PE-MCM-41 hardly adsorbs any of the common gases, such as CH 4, H2, N2, O2, and CO, it was inferred that this material may be suitable for the purification of a variety of gas streams containing CO2 and H2S. These findings lay the ground for the development of a single-stage process for the removal of CO2 and H2S from biogas, using amine-supported PE-MCM-41.

AB - The feasibility of using triamine-grafted pore-expanded mesoporous MCM-41 silica (TRI-PE-MCM-41) as a potential adsorbent for simultaneous removal of CO2 and H2S was investigated. Adsorption isotherms of CO2 and H2S were measured at different temperatures, whereas adsorption at low H2S concentrations from 700 to 10000 ppm with balance CO2 was studied at 298 K. It was found that both CO 2 and H2S adsorb and the selectively toward H2S versus CO2 decreases at an increasing H2S concentration. Because TRI-PE-MCM-41 hardly adsorbs any of the common gases, such as CH 4, H2, N2, O2, and CO, it was inferred that this material may be suitable for the purification of a variety of gas streams containing CO2 and H2S. These findings lay the ground for the development of a single-stage process for the removal of CO2 and H2S from biogas, using amine-supported PE-MCM-41.

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DO - 10.1021/ef1015704

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ER -

Simultaneous adsorption of H₂S and CO₂ on triamine-grafted pore-expanded mesoporous MCM-41 silica

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