| 炭-炭复合膜制备的探索研究 |
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| 引用本文： | 沙广燕,朱英华,梁长海,郭树才.炭-炭复合膜制备的探索研究[J].炭素,2002(3):41-43. |
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| 作者姓名： | 沙广燕 朱英华 梁长海 郭树才 |
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| 作者单位： | 大连理工大学煤化工研究设计所,大连116012 |
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| 摘 要： | 以煤沥青基炭分离膜为支撑体，采用聚合物溶液涂层或浸渍制备出了炭－炭复合分离膜，测试了高纯H2，CO2，N2和O2单组分在炭－炭基复合分离膜上的渗透速率，计算了各气体组分的理想分离系数。结果显示以聚乙二醇水溶液进行表面涂层制备的炭－炭复合膜，其气体分离性能与炭分离膜相比稍有提高，以酚醛树脂N，N－二甲基乙酰胺溶液和加有分散剂的酚醛树脂乙醇溶液涂层制备的炭－炭复合膜在分离性能上都有较大提高，尤其加有分散剂的酚醛树脂乙醇溶液涂层后可使H2／CO2的分离系数达16．0左右，而采用酚醛树脂乙醇溶液涂层和浸渍得到的炭－炭基复合膜的气体渗透速率和分离系数均下降。
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| 关 键 词： | 炭－炭复合膜 制备 研究 涂层 浸渍 |
| 文章编号： | 1001-8948(2002)03-0041-03 |
| 修稿时间： | 2002年4月26日 |
PREPARATION OF CARBON-CARBON COMPOSITE MEMBRANE FOR GAS SEPARATION |
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| SHA Guang yan,ZHU Ying hua,LIANG Chang hai ,GUO Shu cai.PREPARATION OF CARBON-CARBON COMPOSITE MEMBRANE FOR GAS SEPARATION[J].Carbon,2002(3):41-43. |
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| Authors: | SHA Guang yan ZHU Ying hua LIANG Chang hai GUO Shu cai |
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| Affiliation: | SHA Guang yan,ZHU Ying hua,LIANG Chang hai *,GUO Shu cai |
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| Abstract: | Carbon membrane is produced from a coal tar pitch precursor,which is heat-polymerized and preoxidized under optimum conditions.Carbon-carbon composite membrane is prepared by the method of surface coating with a solution of pheonlformaldehyde resin or pregnation.Gas separation properties are measured.The results show that the ideal separation factors for H 2/N 2,H 2/O 2 and H 2/CO 2 on carbon-carbon composite membrane can reach 4.57,5.68,and 16.2,respectively.The values are higher than the corresponding theoretical maximums for Kundsen diffusion.The predominant transport mechanism in the composite membrane can be attributed to molecular sieving mechanism. |
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| Keywords: | carbon-carbon composite membrane coating pregnation |
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