Amine-grafted MCM-48 and silica xerogel as superior sorbents for acidic gas removal from natural gas

Helen Y. Huang; Ralph T. Yang; Daniel Chinn; Curtis L. Munson

doi:10.1021/ie020440u

Amine-grafted MCM-48 and silica xerogel as superior sorbents for acidic gas removal from natural gas

Helen Y. Huang
, Ralph T. Yang
, Daniel Chinn
, Curtis L. Munson

Department of Chemical and Biological Engineering

University of Michigan, Ann Arbor
Chevron Corporation

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

722 Scopus citations

Abstract

In an effort to develop selective solid sorbents for acidic gas (CO₂ and H₂S) removal from natural gas mixtures, we synthesized amine-surface-modified silica xerogel and MCM-48 materials. With large amounts of basic amine groups on the surface, the sorbents are able to selectively bind the acidic gases CO₂ and H₂S. High adsorption capacities and adsorption rates were obtained for both gases. The adsorption-desorption isotherms of the gases and thermogravimetric analysis of the sorbents showed that these sorbents can be regenerated completely under mild conditions such as those used in pressure swing or temperature swing adsorption processes. We have also investigated the effect of moisture on the adsorption of CO₂ and H₂S by TPD-MS and infrared spectroscopy. The results indicated that the presence of water vapor doubled the amount of CO₂ adsorbed and barely affected the H₂S adsorption.

Original language	English
Pages (from-to)	2427-2433
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	42
Issue number	12
DOIs	https://doi.org/10.1021/ie020440u
State	Published - Jun 11 2003

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title = "Amine-grafted MCM-48 and silica xerogel as superior sorbents for acidic gas removal from natural gas",

abstract = "In an effort to develop selective solid sorbents for acidic gas (CO2 and H2S) removal from natural gas mixtures, we synthesized amine-surface-modified silica xerogel and MCM-48 materials. With large amounts of basic amine groups on the surface, the sorbents are able to selectively bind the acidic gases CO2 and H2S. High adsorption capacities and adsorption rates were obtained for both gases. The adsorption-desorption isotherms of the gases and thermogravimetric analysis of the sorbents showed that these sorbents can be regenerated completely under mild conditions such as those used in pressure swing or temperature swing adsorption processes. We have also investigated the effect of moisture on the adsorption of CO2 and H2S by TPD-MS and infrared spectroscopy. The results indicated that the presence of water vapor doubled the amount of CO2 adsorbed and barely affected the H2S adsorption.",

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T1 - Amine-grafted MCM-48 and silica xerogel as superior sorbents for acidic gas removal from natural gas

AU - Huang, Helen Y.

AU - Yang, Ralph T.

AU - Chinn, Daniel

AU - Munson, Curtis L.

PY - 2003/6/11

Y1 - 2003/6/11

N2 - In an effort to develop selective solid sorbents for acidic gas (CO2 and H2S) removal from natural gas mixtures, we synthesized amine-surface-modified silica xerogel and MCM-48 materials. With large amounts of basic amine groups on the surface, the sorbents are able to selectively bind the acidic gases CO2 and H2S. High adsorption capacities and adsorption rates were obtained for both gases. The adsorption-desorption isotherms of the gases and thermogravimetric analysis of the sorbents showed that these sorbents can be regenerated completely under mild conditions such as those used in pressure swing or temperature swing adsorption processes. We have also investigated the effect of moisture on the adsorption of CO2 and H2S by TPD-MS and infrared spectroscopy. The results indicated that the presence of water vapor doubled the amount of CO2 adsorbed and barely affected the H2S adsorption.

AB - In an effort to develop selective solid sorbents for acidic gas (CO2 and H2S) removal from natural gas mixtures, we synthesized amine-surface-modified silica xerogel and MCM-48 materials. With large amounts of basic amine groups on the surface, the sorbents are able to selectively bind the acidic gases CO2 and H2S. High adsorption capacities and adsorption rates were obtained for both gases. The adsorption-desorption isotherms of the gases and thermogravimetric analysis of the sorbents showed that these sorbents can be regenerated completely under mild conditions such as those used in pressure swing or temperature swing adsorption processes. We have also investigated the effect of moisture on the adsorption of CO2 and H2S by TPD-MS and infrared spectroscopy. The results indicated that the presence of water vapor doubled the amount of CO2 adsorbed and barely affected the H2S adsorption.

UR - https://www.scopus.com/pages/publications/0037980448

U2 - 10.1021/ie020440u

DO - 10.1021/ie020440u

M3 - Article

AN - SCOPUS:0037980448

SN - 0888-5885

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SP - 2427

EP - 2433

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 12

ER -

Amine-grafted MCM-48 and silica xerogel as superior sorbents for acidic gas removal from natural gas

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