Pervaporation separation of n-octane/thiophene mixtures using polydimethylsiloxane/ceramic composite membranes

由 ty10086 提交于 周四, 08/26/2021 - 13:45
文章英文标题
Pervaporation separation of n-octane/thiophene mixtures using polydimethylsiloxane/ceramic composite membranes
正文
Abstract(#br)Crosslinked polydimethylsiloxane (PDMS)/ceramic composite membranes were prepared and employed for desulfurization of model gasoline composed of n-octane and thiophene. The structural morphology and thermal stability of the composite membranes were characterized by scanning electron microscope (SEM) and thermogravimetric analysis (TGA). The pervaporation performances of the membranes under various crosslinking agent amounts, feed sulfur content, feed temperature, permeate pressure and feed flow rate were investigated. Experimental results indicated that 20% of the crosslinking agent amount was more preferable. Increase of sulfur content in feed resulted in a higher total flux but a lower sulfur enrichment factor. By increasing the feed temperature, the total flux increased while sulfur enrichment factor decreased. Low permeate pressure and high feed flow rate were beneficial to improve total flux and sulfur enrichment factor. At 303.15\u003cce:hsp sp=\"0.25\"/\u003eK, the composite membrane exhibited high performance with the total flux of 5.37\u003cce:hsp sp=\"0.25\"/\u003ekg m −\u003cce:hsp sp=\"0.10\"/\u003e2 h −\u003cce:hsp sp=\"0.10\"/\u003e1 and the corresponding sulfur enrichment factor of 4.22 for 400\u003cce:hsp sp=\"0.25\"/\u003eμg g −\u003cce:hsp sp=\"0.10\"/\u003e1 sulfur in feed under 210\u003cce:hsp sp=\"0.25\"/\u003ePa. Our results showed that the PDMS/ceramic composite membrane was a potential candidate to be used for sulfur removal from the gasoline.
文章内容（英文）
Abstract(#br)Crosslinked polydimethylsiloxane (PDMS)/ceramic composite membranes were prepared and employed for desulfurization of model gasoline composed of n-octane and thiophene. The structural morphology and thermal stability of the composite membranes were characterized by scanning electron microscope (SEM) and thermogravimetric analysis (TGA). The pervaporation performances of the membranes under various crosslinking agent amounts, feed sulfur content, feed temperature, permeate pressure and feed flow rate were investigated. Experimental results indicated that 20% of the crosslinking agent amount was more preferable. Increase of sulfur content in feed resulted in a higher total flux but a lower sulfur enrichment factor. By increasing the feed temperature, the total flux increased while sulfur enrichment factor decreased. Low permeate pressure and high feed flow rate were beneficial to improve total flux and sulfur enrichment factor. At 303.15\u003cce:hsp sp=\"0.25\"/\u003eK, the composite membrane exhibited high performance with the total flux of 5.37\u003cce:hsp sp=\"0.25\"/\u003ekg m −\u003cce:hsp sp=\"0.10\"/\u003e2 h −\u003cce:hsp sp=\"0.10\"/\u003e1 and the corresponding sulfur enrichment factor of 4.22 for 400\u003cce:hsp sp=\"0.25\"/\u003eμg g −\u003cce:hsp sp=\"0.10\"/\u003e1 sulfur in feed under 210\u003cce:hsp sp=\"0.25\"/\u003ePa. Our results showed that the PDMS/ceramic composite membrane was a potential candidate to be used for sulfur removal from the gasoline.
来源出处
Journal|[J]DesalinationVolume 258, Issue 1. 2010. PP 106-111
DOI
https://doi.org/10.1016/j.desal.2010.03.035

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PDMS-微流控基质材料-PDMS/道康宁SYLGARD184-聚二甲基硅氧烷/0.5KG(组)

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此链接为PDMS-微流控芯片/PDMS/道康宁SYLGARD184/小桶0.5KG装的链接。

一般性的产品性能参数表参考以下小桶装的参数：

微流控芯片/PDMS/道康宁SYLGARD184；微流控芯片/PDMS/道康宁SYLGARD184；微流控芯片/PDMS/道康宁SYLGARD184；

品牌型号：道康宁SYLGARD184

包装规格：0.5KG/罐[含有45.4g固化剂，总重量为0.5KG]

产品颜色：保质期限：36个月

存放环境说明：室温,阴凉处保存

备注说明：

美国道康宁道康宁SYLGARD 184硅橡胶是由液体组分组成的双组分套件产品，包括基本组分与固化剂。基本组分与固化剂按10:1重量比完全混合，中等粘度混合液的稠度与SAE 40机油相似。无论厚薄，混合液将固化成为具有韧性的透明弹性体，最适用于电子／电气方面的封装与灌封应用。 道康宁SYLGARD 184硅橡胶在25~150℃的温度范围内固化，无放热现象，无需二次固化。固化过程完成后，可立即在-55~200℃的温度范围内使用。 产品特性：低毒性，在常规的工业操作中，无特别的注意事项； 无溶剂或固化副产物， 固化时不放热；无需特殊的通风条件，不会产生腐蚀；固化时，收缩量小； 固化后， 透明具有弹性；抗震与减缓机械震动；振动的传递性能小；元件可裸视检查与易修补性； 环保性能；低吸水性，良好的耐辐射性能；高真空状态下的低漏气性； 优异的电性能；较大温度范围内的稳定性， 抗解聚；在-55~200℃范围内，甚至在密闭状态下保持弹性与柔韧性，性能稳定； 阻燃性，UL可燃性分级为94 V-1，温度等级：130℃ 产品用途： 道康宁SYLGARD 184硅橡胶在电气／电子的封装与灌封方面有广泛的应用。