Alumina-Supported SAPO-34 Membranes for CO2/CH4 Separation

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• 作者：Moises A. Carreon ; Shiguang Li ; John L. Falconer ; Richard D. Noble
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：April 23, 2008
• 年：2008
• 卷：130
• 期：16
• 页码：5412 - 5413
• 全文大小：384K
• 年卷期：v.130,no.16(April 23, 2008)
• ISSN：1520-5126

文摘

SAPO-34 membranes were prepared by in situ crystallization on α-Al₂O₃ porous supports. The crystal size of the seeds was effectively controlled in the 0.7 to 8.5 µm range by employing different structure-directing agents. Seeds smaller than 1 µm produced membranes with CO₂/CH₄ separation selectivities higher than 170 and unprecedented CO₂ permeances as high as ~2.0 × 10⁻⁶ mol/m²·s·Pa at 295 K and a feed pressure of 224 kPa. The membranes effectively separated CO₂/CH₄ mixtures up to 1.7 MPa.