SEPARATION MEMBRANE FOR TREATING ACID GAS-CONTAINING GAS, AND METHOD FOR MANUFACTURING SEPARATION MEMBRANE FOR TREATING ACID GAS-CONTAINING GAS
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United States of America Patent
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Mar 24, 2016
app pub date -
Mar 31, 2014
filing date -
Jun 12, 2013
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Abstract
An acid gas-containing gas treatment separation membrane is provided which can separate acid gas, such as carbon dioxide, etc., or methane gas from biogas containing acid gas and methane gas, to obtain a gas having a high methane concentration. The acid gas-containing gas treatment separation membrane includes a polysiloxane network structure having an introduced hydrocarbon group, in which unreacted residual groups present on a surface of the polysiloxane network structure have been eliminated or reduced by reaction with at least one modifying silane compound selected from the group consisting of hydrocarbon group-containing monoalkoxysilanes, hydrocarbon group-containing dialkoxysilanes, hydrocarbon group-containing monochlorosilanes, hydrocarbon group-containing dichlorosilanes, and hydrocarbon group-containing trichlorosilanes.
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