Tetraethylenepentamine-modified mesoporous adsorbents for CO2 capture: Effects of preparation methods

Shou Heng Liu; Wei Che Hsiao; Wun Hu Sie

doi:10.1007/s10450-012-9429-8

Tetraethylenepentamine-modified mesoporous adsorbents for CO₂ capture: Effects of preparation methods

Shou Heng Liu, Wei Che Hsiao, Wun Hu Sie

Department of Environmental Engineering

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

31 Citations (Scopus)

Abstract

Tetraethylenepentamine (TEPA)-modified mesocellular silica foams (MSFs) were fabricated via physical impregnation (MSF-T-x) and chemical grafting (MSF-CTy) methods. The CO₂ adsorption on these TEPA-modified MSFs was measured by using microbalances at 348 K and their adsorption capacities were observed to be 26.4-193.6 mg CO₂/g-sorbent under ambient pressure using dry 15 % CO₂. It was found that the CO₂ adsorption capacities of MSF-CT-y were smaller than those of MSF-T-x sorbents which may be attributed to their higher density of amine groups. On the contrary, MSF-CT-y exhibited enhanced stability during repeated adsorption-desorption cycles compared to MSF-T-x sorbents. This notable enhancement in the durability of CO₂ adsorption-desorption process was probably attributed to the decreased leaching of TEPA which is chemically bonded to the surface of MSF.

Original language	English
Pages (from-to)	431-437
Number of pages	7
Journal	Adsorption
Volume	18
Issue number	5-6
DOIs	https://doi.org/10.1007/s10450-012-9429-8
Publication status	Published - 2012 Dec

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Surfaces and Interfaces

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title = "Tetraethylenepentamine-modified mesoporous adsorbents for CO2 capture: Effects of preparation methods",

abstract = "Tetraethylenepentamine (TEPA)-modified mesocellular silica foams (MSFs) were fabricated via physical impregnation (MSF-T-x) and chemical grafting (MSF-CTy) methods. The CO2 adsorption on these TEPA-modified MSFs was measured by using microbalances at 348 K and their adsorption capacities were observed to be 26.4-193.6 mg CO2/g-sorbent under ambient pressure using dry 15 % CO2. It was found that the CO2 adsorption capacities of MSF-CT-y were smaller than those of MSF-T-x sorbents which may be attributed to their higher density of amine groups. On the contrary, MSF-CT-y exhibited enhanced stability during repeated adsorption-desorption cycles compared to MSF-T-x sorbents. This notable enhancement in the durability of CO2 adsorption-desorption process was probably attributed to the decreased leaching of TEPA which is chemically bonded to the surface of MSF.",

author = "Liu, {Shou Heng} and Hsiao, {Wei Che} and Sie, {Wun Hu}",

note = "Funding Information: Acknowledgements The financial support of the Taiwan National Science Council (NSC 99-2221-E-151-023-MY2) is gratefully acknowledged.",

year = "2012",

month = dec,

doi = "10.1007/s10450-012-9429-8",

language = "English",

volume = "18",

pages = "431--437",

journal = "Adsorption",

issn = "0929-5607",

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T1 - Tetraethylenepentamine-modified mesoporous adsorbents for CO2 capture

T2 - Effects of preparation methods

AU - Liu, Shou Heng

AU - Hsiao, Wei Che

AU - Sie, Wun Hu

N1 - Funding Information: Acknowledgements The financial support of the Taiwan National Science Council (NSC 99-2221-E-151-023-MY2) is gratefully acknowledged.

PY - 2012/12

Y1 - 2012/12

N2 - Tetraethylenepentamine (TEPA)-modified mesocellular silica foams (MSFs) were fabricated via physical impregnation (MSF-T-x) and chemical grafting (MSF-CTy) methods. The CO2 adsorption on these TEPA-modified MSFs was measured by using microbalances at 348 K and their adsorption capacities were observed to be 26.4-193.6 mg CO2/g-sorbent under ambient pressure using dry 15 % CO2. It was found that the CO2 adsorption capacities of MSF-CT-y were smaller than those of MSF-T-x sorbents which may be attributed to their higher density of amine groups. On the contrary, MSF-CT-y exhibited enhanced stability during repeated adsorption-desorption cycles compared to MSF-T-x sorbents. This notable enhancement in the durability of CO2 adsorption-desorption process was probably attributed to the decreased leaching of TEPA which is chemically bonded to the surface of MSF.

AB - Tetraethylenepentamine (TEPA)-modified mesocellular silica foams (MSFs) were fabricated via physical impregnation (MSF-T-x) and chemical grafting (MSF-CTy) methods. The CO2 adsorption on these TEPA-modified MSFs was measured by using microbalances at 348 K and their adsorption capacities were observed to be 26.4-193.6 mg CO2/g-sorbent under ambient pressure using dry 15 % CO2. It was found that the CO2 adsorption capacities of MSF-CT-y were smaller than those of MSF-T-x sorbents which may be attributed to their higher density of amine groups. On the contrary, MSF-CT-y exhibited enhanced stability during repeated adsorption-desorption cycles compared to MSF-T-x sorbents. This notable enhancement in the durability of CO2 adsorption-desorption process was probably attributed to the decreased leaching of TEPA which is chemically bonded to the surface of MSF.

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JF - Adsorption

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ER -

Tetraethylenepentamine-modified mesoporous adsorbents for CO₂ capture: Effects of preparation methods

Abstract

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