高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (3): 562.
• 研究快报 • 上一篇
张子勇, 刘宗华
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中山大学聚合物复合材料及功能材料教育部重点实验室访问学者基金(批准号:2000-1-2)资助
ZHANG Zi-Yong, LIU Zong-Hua
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关键词: 气体分离膜, 硅橡胶, 促进输送, 十一烯酸钴
Abstract: A new type of silicone rubber membranes with facilitated transport properties for oxygen was prepared by using 11-alkenoic acid cobalt, a silicone rubber containing vinyl groups of 5%(molar fraction), a hydrogen-containing silicon oil and chlorine platinum acid. The solution casting and vulcanization were carried out simultaneously at room temperature. The studies on permselectivities show that O2 permeability coefficients increase with decreasing oxygen pressure difference, but N2 permeability coefficients are independent of nitrogen pressure difference. The cause is considered that a polymer cobalt complex is formed to possess an ability of facilitated transport for oxygen. This result leads to the increases in both oxygen permeability coefficient and oxygen/nitrogen separation coefficient at the same time. For example, oxygen permeability coefficient of 750 Barrer and oxygen nitrogen separation coefficient of 3.09 were obtained at a pressure difference of 0.05 MPa for the membrane containing 11-alkenoic acid cobalt of 2.5%(mass fraction). As high as 5% of 11-alkenoic acid cobalt could be added into the membrane, its oxygen permeability coefficient and oxygen/nitrogen separation coefficient increase to 802 Barrer and 3.34 at the pressure difference of 0.05 MPa, respectively.
Key words: Gas separation membrane, Silicone rubber, Facilitated transport, 11-Alkenoic acid cobalt
中图分类号:
O631
TQ26
TrendMD:
张子勇, 刘宗华. 新型含钴硅橡胶离聚体膜的富氧性能. 高等学校化学学报, 2003, 24(3): 562.
ZHANG Zi-Yong, LIU Zong-Hua . Oxygen-enriching Properties of a New Silicone Rubber Ionomer Membranes Containing Cobalt. Chem. J. Chinese Universities, 2003, 24(3): 562.
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http://www.cjcu.jlu.edu.cn/CN/Y2003/V24/I3/562