articleIndustrial & Engineering Chemistry ResearchOct 26, 2002Closed access

Amine-Grafted MCM-48 and Silica Xerogel as Superior Sorbents for Acidic Gas Removal from Natural Gas

HYHelen Y. HuangRTRalph T. YangDCDaniel ChinnCLCurtis L. Munson

University of Michigan–Ann Arbor · Institute of Chemical Engineering · +1 more institution

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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…

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Topics & keywords

Topics
Keywords
  • Adsorption
  • Amine gas treating
  • Thermogravimetric analysis
  • Pressure swing adsorption
  • Chemistry
  • Desorption
  • Natural gas
  • Infrared spectroscopy
UN Sustainable Development Goals
  • Clean water and sanitation
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