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- 저자 : Jujie Luo (검색결과 2 건)
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Enhancement of Gas Permeability for CH4/N2 Separation Membranes by Blending SBS to Pebax Polymers
Panpan Guan,Jujie Luo,Wei Li,Ziqin Si 한국고분자학회 2017 Macromolecular Research Vol.25 No.10
Three poly(ether-b-amide) (Pebax) membranes with different polyamide (PA) contents were prepared to study CH4/N2 gas separation property. The increase in CH4 and N2 gas permeability was observed with the lowering of PA content. It was attributed to the decreased fraction of impermeable crystalline PA regions and the decrease in the crystallinity of the semi-crystalline PA phase of Pebax membranes. This result is consistent with the previous reports on other gases for Pebax membranes. To lower the crystallinity and higher the CH4 permeability, 10wt% poly(styrene-b-butadiene-b-styrene) (SBS) block copolymer was blended with Pebax. For single gas permeation test, we demonstrated that CH4 permeability of the Pebax/SBS blend membrane is 60% higher than that of Pebax, reaching 106 Barrer at 55 °C. In CH4 and N2 mixed gas permeation test, up to 26 vol% of CH4 could be obtained from passing 10 vol% CH4 of CH4/N2 mixed gas through the Pebax/SBS membranes, demonstrating that Pebax based membranes could potentially be applied to the enrichment of CH4 for the coal-bed methane (CBM).
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Lijun Du,Ning Lv,Jiashuai Li,Jiayi Zhang,Yilan Chen,Yalin Zhang,Zhen Li,Xianqiang Huang,Jujie Luo 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-
NiCoSe4 nanoflowers were synthesized on carbon fiber felt (CFF) by microwave method, and the effects ofmicrowave time and microwave power on the morphology, physical phase and performance ofNiCoSe4@CFF were explored. The results display that the nanostructured NiCoSe4 prepared under themicrowave irradiation of 1000 W for 120 s is uniformly loaded on the CFF. The NiCoSe4@CFF electrodeexhibits a superior specific capacity of 1653.6F g1 at 1A/g and maintains a superior cycling performanceof 87.05 % of the initial capacitance over 150,000 cycles. In addition, the flexible supercapacitor fabricatedwith NiCoSe4@CFF as the cathode exhibits excellent flexibility and flexural strength. As an effective catalystfor oxygen evolution reaction (OER), NiCoSe4@CFF demonstrates a low overpotential of 0.358 V, arelatively small Tafel slope of 115.93 mV dec1 and an excellent lifetime at 10 mA cm2.
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