Triamine-grafted pore-expanded mesoporous silica for CO2 capture: Effect of moisture and adsorbent regeneration strategies

Rodrigo Serna-Guerrero; Youssef Belmabkhout; Abdelhamid Sayari

doi:10.1007/s10450-010-9253-y

Triamine-grafted pore-expanded mesoporous silica for CO₂ capture: Effect of moisture and adsorbent regeneration strategies

Rodrigo Serna-Guerrero, Youssef Belmabkhout, Abdelhamid Sayari^*

^*Corresponding author for this work

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

66 Scopus citations

Abstract

Adsorption of carbon dioxide (CO₂) was investigated on triamine-grafted, pore-expanded MCM-41 mesoporous silica (TRI-PE-MCM-41). Measurements of adsorption capacity using mass spectrometry showed an enhanced CO₂ adsorption capacity in humid streams compared to dry CO ₂. This was corroborated with breakthrough experiments, which also showed that TRI-PE-MCM-41 offered a practically infinite selectivity towards CO₂ over nitrogen. Cyclic measurements of pure CO₂ and CO₂:N₂ = 10:90 mixture using different regeneration modes showed that amine-grafted PE-MCM-41 is particularly suitable for CO₂ removal using temperature swing adsorption (TSA) at adsorption temperatures higher than ambient, while temperature-vacuum swing adsorption (TVSA) may be attractive at ambient temperature.

Original language	English (US)
Pages (from-to)	567-575
Number of pages	9
Journal	Adsorption
Volume	16
Issue number	6
DOIs	https://doi.org/10.1007/s10450-010-9253-y
State	Published - Dec 2010

Keywords

Adsorbent regeneration
Adsorption capacity
Adsorption selectivity
CO capture
TSA
TVSA

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Surfaces and Interfaces

Access to Document

10.1007/s10450-010-9253-y

Cite this

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title = "Triamine-grafted pore-expanded mesoporous silica for CO2 capture: Effect of moisture and adsorbent regeneration strategies",

abstract = "Adsorption of carbon dioxide (CO2) was investigated on triamine-grafted, pore-expanded MCM-41 mesoporous silica (TRI-PE-MCM-41). Measurements of adsorption capacity using mass spectrometry showed an enhanced CO2 adsorption capacity in humid streams compared to dry CO 2. This was corroborated with breakthrough experiments, which also showed that TRI-PE-MCM-41 offered a practically infinite selectivity towards CO2 over nitrogen. Cyclic measurements of pure CO2 and CO2:N2 = 10:90 mixture using different regeneration modes showed that amine-grafted PE-MCM-41 is particularly suitable for CO2 removal using temperature swing adsorption (TSA) at adsorption temperatures higher than ambient, while temperature-vacuum swing adsorption (TVSA) may be attractive at ambient temperature.",

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author = "Rodrigo Serna-Guerrero and Youssef Belmabkhout and Abdelhamid Sayari",

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AU - Sayari, Abdelhamid

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AB - Adsorption of carbon dioxide (CO2) was investigated on triamine-grafted, pore-expanded MCM-41 mesoporous silica (TRI-PE-MCM-41). Measurements of adsorption capacity using mass spectrometry showed an enhanced CO2 adsorption capacity in humid streams compared to dry CO 2. This was corroborated with breakthrough experiments, which also showed that TRI-PE-MCM-41 offered a practically infinite selectivity towards CO2 over nitrogen. Cyclic measurements of pure CO2 and CO2:N2 = 10:90 mixture using different regeneration modes showed that amine-grafted PE-MCM-41 is particularly suitable for CO2 removal using temperature swing adsorption (TSA) at adsorption temperatures higher than ambient, while temperature-vacuum swing adsorption (TVSA) may be attractive at ambient temperature.

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