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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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管式氧化石墨烯膜用于乙醇脱水过程
DOI: 10.3969/j.issn.1671-7627.2015.05.001, PP. 1-5
Keywords: 乙醇脱水,渗透汽化,氧化石墨烯,膜分离
Abstract:
为了研究新型二维氧化石墨烯膜材料在乙醇脱水过程中的应用,采用改进的hummers法制备氧化石墨烯,通过傅里叶变换红外光谱仪(ft-ir)、热分析仪(tg-dsc)和场发射扫描电子显微镜(fesem)等表征氧化石墨烯的微结构及性质。以管式陶瓷超滤膜为支撑体,采用浸渍提拉法制备完整无缺陷的氧化石墨烯膜。结果表明:将所制备的氧化石墨烯陶瓷复合膜用于乙醇脱水过程,此膜对水分子表现出优先选择透过性。当原料液中水质量分数为10%,操作温度为60℃时,乙醇-水的分离因子可以达到36以上,渗透通量达到2.5kg/(m2·h)。氧化石墨烯陶瓷复合膜可以操作100h以上,并保持一定的分离性能,具有较好的稳定性。
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