scholarly journals Poly(ethylene oxide)/Ag ions and nanoparticles/1-hexyl-3-methylimidazolium tetrafluoroborate composite membranes with long-term stability for olefin/paraffin separation

RSC Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 4771-4775 ◽  
Author(s):  
Hyunsik Jeon ◽  
Sang Wook Kang
Keyword(s):  
Ethylene Oxide ◽  
Composite Membrane ◽  
Composite Membranes ◽  
Term Stability ◽  
Long Term Stability ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

A poly(ethylene oxide)(PEO)/AgBF4/1-hexyl-3-methylimidazolium tetrafluoroborate (HMIM+BF4−) composite membrane with long-term stability was prepared for olefin/paraffin separation.

scholarly journals Long-Term Stability Improvement of Non-Toxic Dye-Sensitized Solar Cells via Poly(ethylene oxide) Gel Electrolytes for Future Textile-Based Solar Cells

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3035
Author(s):  
Jan Lukas Storck ◽  
Marius Dotter ◽  
Sonia Adabra ◽  
Michelle Surjawidjaja ◽  
Bennet Brockhagen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Term Stability ◽  
Long Term Stability ◽  
Dye Sensitized ◽  
Gel Electrolytes ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Sensitized Solar Cells

To overcome the long-term stability problems of dye-sensitized solar cells (DSSC) due to solvent evaporation and leakage, gelling the electrolyte with polymers is an appropriate option. Especially for future applications of textile-based DSSCs, which require cost-effective and environmentally friendly materials, such an improvement of the electrolyte is necessary. Therefore, the temporal progressions of efficiencies and fill factors of non-toxic glass-based DSSCs resulting from different gel electrolytes with poly(ethylene oxide) (PEO) are investigated over 52 days comparatively. Dimethyl sulfoxide (DMSO) proved to be a suitable non-toxic solvent for the proposed gel electrolyte without ionic liquids. A PEO concentration of 17.4 wt% resulted in an optimal compromise with a relatively high efficiency over the entire period. Lower concentrations resulted in higher efficiencies during the first days but in a poorer long-term stability, whereas a higher PEO concentration resulted in an overall lower efficiency. Solvent remaining in the gel electrolyte during application was found advantageous compared to previous solvent evaporation. In contrast to a commercial liquid electrolyte, the long-term stability regarding the efficiency was improved successfully with a similar fill factor and thus equal quality.

Long-Term Stability against H2S Poisoning on Pd Composite Membranes by Thin Zeolite Coatings

2019 ◽  
Vol 58 (16) ◽  
pp. 6429-6437 ◽  
Author(s):  
Bingbing Chen ◽  
Jinxia Liu ◽  
Hui Li ◽  
Tianying Xu ◽  
Jixin Zhang ◽  
...  
Keyword(s):  
Composite Membranes ◽  
Term Stability ◽  
Long Term Stability ◽  
H2s Poisoning ◽  
Zeolite Coatings

A novel porous-dense dual-layer composite membrane reactor with long-term stability

AIChE Journal ◽  
2013 ◽  
Vol 59 (11) ◽  
pp. 4355-4363 ◽  
Author(s):  
Wei Jiang ◽  
Guangru Zhang ◽  
Zhengkun Liu ◽  
Kai Zhang ◽  
Wanqin Jin
Keyword(s):  
Composite Membrane ◽  
Membrane Reactor ◽  
Term Stability ◽  
Long Term Stability ◽  
Layer Composite

Thin-film composite membranes based on hyperbranched Poly(ethylene oxide) for CO2/N2 separation

2021 ◽  
pp. 120184
Author(s):  
Gengyi Zhang ◽  
Thien N. Tran ◽  
Liang Huang ◽  
Erda Deng ◽  
Adrienne Blevins ◽  
...  
Keyword(s):  
Thin Film ◽  
Ethylene Oxide ◽  
Composite Membranes ◽  
Film Composite ◽  
Thin Film Composite ◽  
Hyperbranched Poly ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene
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