Proton Conductivity under Dry Conditions for Mesoporous Silica with Highly Dense Sulfonic Acid Groups

2013 ◽  
Vol 117 (17) ◽  
pp. 8727-8736 ◽  
Author(s):  
Satoru Fujita ◽  
Kazuya Kamazawa ◽  
Satoru Yamamoto ◽  
Madhusudan Tyagi ◽  
Toru Araki ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Proton Conductivity ◽  
Sulfonic Acid ◽  
Dry Conditions ◽  
Sulfonic Acid Groups

Synthesis and properties poly(arylene ether sulfone)s with pendant hyper-sulfonic acid

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38298-38307 ◽  
Author(s):  
Jinhui Pang ◽  
Sinan Feng ◽  
Haibo Zhang ◽  
Zhenhua Jiang ◽  
Guibin Wang
Keyword(s):  
Proton Conductivity ◽  
Dimensional Stability ◽  
Sulfonic Acid ◽  
Side Chains ◽  
High Proton Conductivity ◽  
Arylene Ether ◽  
High Proton ◽  
Sulfonic Acid Groups ◽  
Aromatic Side Chains

A novel poly(arylene ether sulfone)s with pendant multiple sulfonic acid groups on aromatic side chains was prepared by graft method, they displayed high proton conductivity and good dimensional stability.

Sulfonated aromatic copoly(ether–amide) membranes II

2017 ◽  
Vol 30 (4) ◽  
pp. 437-445 ◽  
Author(s):  
Wadi Elim Sosa-González ◽  
Ramón del Jesús Palí-Casanova ◽  
Yamile Pérez-Padilla ◽  
María Isabel Loría-Bastarrachea ◽  
José Luis Santiago-García ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Sulfonic Acid ◽  
Main Chain ◽  
Exchange Capacity ◽  
Proton Nuclear Magnetic Resonance ◽  
Polycondensation Reaction ◽  
Aromatic Diamines ◽  
Ion Exchange Capacity ◽  
Sulfonation Degree ◽  
Sulfonic Acid Groups

Several aromatic sulfonated copoly(ether–amide)s, based on the aromatic diamines 4,4′-(hexafluoroisopropylidene)bis(p-phenyleneoxy)-dianiline (HFD) and 2,4-diaminobenzensulfonic acid (DABS) and 4,4′-oxybis(benzoic acid) (OBA), were synthesized through a polycondensation reaction. The sulfonation degree was controlled by introducing different concentrations of 2,4-DABS from 40 mol% up to 80 mol%. Proton nuclear magnetic resonance validated the expected concentrations of sulfonic acid groups in the sulfonated aromatic copoly(ether–amide)s. Thermal decomposition of sulfonic groups was found to initiate at 280°C, while main chain decomposition initiates at 410°C. Proton conductivity between 30°C and 75°C was 19.0 and 45.0 mS/cm, respectively, for the copolymer with the highest concentration of sulfonic groups (–SO3H). Comparison with structurally similar sulfonated copolyamides and copoly(ether–amide)s indicates that these new sulfonated copoly(ether–amide)s based on 4,4′-OBA show improved mechanical properties, but a decrease in ion exchange capacity and proton conductivity.

Synthesis and solid-state NMR characterization of cubic mesoporous silica SBA-1 functionalized with sulfonic acid groups

2011 ◽  
Vol 359 (1) ◽  
pp. 86-94 ◽  
Author(s):  
Hui-Hsu Gavin Tsai ◽  
Po-Jui Chiu ◽  
Guang-Liang Jheng ◽  
Chun-Chiang Ting ◽  
Yu-Chi Pan ◽  
...  
Keyword(s):  
Solid State ◽  
Mesoporous Silica ◽  
Solid State Nmr ◽  
Sulfonic Acid ◽  
Nmr Characterization ◽  
Cubic Mesoporous ◽  
Sulfonic Acid Groups

Amorphous Carbon Bearing Sulfonic Acid Groups in Mesoporous Silica as a Selective Catalyst

2009 ◽  
Vol 21 (1) ◽  
pp. 186-193 ◽  
Author(s):  
Kiyotaka Nakajima ◽  
Mai Okamura ◽  
Junko N. Kondo ◽  
Kazunari Domen ◽  
Takashi Tatsumi ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Amorphous Carbon ◽  
Sulfonic Acid ◽  
Selective Catalyst ◽  
Sulfonic Acid Groups

Direct Syntheses of Ordered SBA-15 Mesoporous Silica Containing Sulfonic Acid Groups

2000 ◽  
Vol 12 (8) ◽  
pp. 2448-2459 ◽  
Author(s):  
D. Margolese ◽  
J. A. Melero ◽  
S. C. Christiansen ◽  
B. F. Chmelka ◽  
G. D. Stucky
Keyword(s):  
Mesoporous Silica ◽  
Sulfonic Acid ◽  
Sulfonic Acid Groups

scholarly journals Effect of acidic MCM-41 mesoporous silica functionalized with sulfonic acid groups catalyst in conversion of methanol to dimethyl ether

2020 ◽  
Vol 6 ◽  
pp. 49-55
Author(s):  
Rosanna Viscardi ◽  
Vincenzo Barbarossa ◽  
Raimondo Maggi ◽  
Francesco Pancrazzi
Keyword(s):  
Mesoporous Silica ◽  
Dimethyl Ether ◽  
Sulfonic Acid ◽  
Sulfonic Acid Groups ◽  
Mcm 41
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