scholarly journals Functionalizing graphene oxide framework membranes with sulfonic acid groups for superior aqueous mixture separation

2019 ◽  
Vol 7 (34) ◽  
pp. 19682-19690 ◽  
Author(s):  
Guang Yang ◽  
Zongli Xie ◽  
Marlene Cran ◽  
Derrick Ng ◽  
Christopher D. Easton ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Sulfonic Acid ◽  
Aqueous Mixtures ◽  
Efficient Separation ◽  
Mixture Separation ◽  
Aqueous Mixture ◽  
Sulfonic Acid Groups

Hydrophilic pervaporation (PV) membranes with ultrahigh throughput and outstanding separation ability are highly beneficial for efficient separation of aqueous mixtures.

Performance evaluation of reduced graphene oxide membrane doped with polystyrene sulfonic acid for forward osmosis process

2021 ◽  
Vol 44 ◽  
pp. 101093
Author(s):  
Priyamjeet Deka ◽  
Vishal Kumar Verma ◽  
Bonita Yurembam ◽  
Arindom Bikash Neog ◽  
Kalyan Raidongia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Performance Evaluation ◽  
Reduced Graphene Oxide ◽  
Sulfonic Acid ◽  
Forward Osmosis ◽  
Reduced Graphene ◽  
Polystyrene Sulfonic Acid ◽  
Oxide Membrane

Mesoporous activated carbon from sunflower shells modified with sulfonic acid groups as solid acid catalyst for itaconic acid esterification

2020 ◽  
Author(s):  
John J. Alvear-Daza ◽  
Gustavo A. Pasquale ◽  
Julián A. Rengifo-Herrera ◽  
Gustavo P. Romanelli ◽  
Luis R. Pizzio
Keyword(s):  
Activated Carbon ◽  
Itaconic Acid ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Mesoporous Activated Carbon ◽  
Acid Esterification ◽  
Sulfonic Acid Groups

scholarly journals Methoxylation of α-pinene over poly(vinyl alcohol) containing sulfonic acid groups

2009 ◽  
Vol 147 (2-3) ◽  
pp. 302-306 ◽  
Author(s):  
D.S. Pito ◽  
I.M. Fonseca ◽  
A.M. Ramos ◽  
J. Vital ◽  
J.E. Castanheiro
Keyword(s):  
Vinyl Alcohol ◽  
Sulfonic Acid ◽  
Poly Vinyl Alcohol ◽  
Sulfonic Acid Groups

Layered graphene oxide membranes functioned by amino acids for efficient separation of metal ions

2021 ◽  
Vol 546 ◽  
pp. 149145
Author(s):  
Bo Zheng ◽  
Xianxian Chu ◽  
Han Li ◽  
Xiuli Wu ◽  
Xin Zhao ◽  
...  
Keyword(s):  
Amino Acids ◽  
Graphene Oxide ◽  
Metal Ions ◽  
Separation Of Metal Ions ◽  
Efficient Separation ◽  
Oxide Membranes ◽  
Graphene Oxide Membranes

Superprotonic Conductivity of a UiO-66 Framework Functionalized with Sulfonic Acid Groups by Facile Postsynthetic Oxidation

2015 ◽  
Vol 127 (17) ◽  
pp. 5231-5235 ◽  
Author(s):  
Won Ju Phang ◽  
Hyuna Jo ◽  
Woo Ram Lee ◽  
Jeong Hwa Song ◽  
Kicheon Yoo ◽  
...  
Keyword(s):  
Sulfonic Acid ◽  
Sulfonic Acid Groups

Do acid–base interactions really improve the ion conduction in a proton exchange membrane? – a study on the effect of basic groups

2019 ◽  
Vol 7 (34) ◽  
pp. 19820-19830 ◽  
Author(s):  
Yuqian Sui ◽  
Yexin Du ◽  
Huayuan Hu ◽  
Jieshu Qian ◽  
Xuan Zhang
Keyword(s):  
Physicochemical Properties ◽  
Sulfonic Acid ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Acid Base ◽  
Ion Conduction ◽  
Exchange Membrane ◽  
Sulfonic Acid Groups

Generating acid–base interactions between sulfonic acid groups in a proton exchange membrane (PEM) and the incorporation of basic groups are effective approaches to improving the physicochemical properties of a membrane.

Synthesis and characterisation of novel functional polyolefin containing sulfonic acid groups

2008 ◽  
Vol 44 (2) ◽  
pp. 475-482 ◽  
Author(s):  
Yi Zheng ◽  
Li Pan ◽  
Yan-Guo Li ◽  
Yue-Sheng Li
Keyword(s):  
Sulfonic Acid ◽  
Sulfonic Acid Groups

Synthesis of soluble sulfonated polybenzimidazoles derived from 2-sulfonate terephthalic acid

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Qunying Wu ◽  
Guyu Xiao ◽  
Deyue Yan
Keyword(s):  
Terephthalic Acid ◽  
Sulfonic Acid ◽  
Strong Acid ◽  
High Thermal Stability ◽  
Swelling Ratio ◽  
Solution Casting ◽  
Direct Polycondensation ◽  
Acid Base ◽  
Resistance To Oxidation ◽  
Sulfonic Acid Groups

Abstract2-Sulfonate p-terephthalic acid (sTA) was synthesized, and sulfonated polybenzimidazoles (sPBI) were prepared by direct polycondensation of 3,3’- diaminobenzidine (DAB) and sTA with 4,4’-oxybis(benzoic acid) (OBBA) or 2,2’- bis(4-carboxylphenyl)-hexafluoropropane (BCHFP). Thus the ether groups and hexafluoroisopropylidene units were incorporated into the backbone of the sPBI in order to improve the flexibility and solubility. The sPBI based on OBBA showed poor solubility, while the sPBI containing hexafluoroisopropylidene units were soluble in common solvents. sPBI-20 ~ sPBI-60 could form tough and transparent membranes by solution casting. sPBI indicated high thermal stability, the 5% weight loss temperature (T5%) which was higher than 520°C, decreased with the increase of degree of sulfonation. sPBI-20 ~ sPBI-60 showed no glass transition at temperatures lower than 380°C. In addition, sPBI showed low water uptake, low swelling ratio as well as excellent resistance to oxidation. But sPBI exhibited low proton conductivity because of the strong acid-base interactions between basic benzimidazole and sulfonic acid groups.

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