Crystalline and permanently porous porphyrin-based metal tetraphosphonates

2018 ◽  
Vol 54 (4) ◽  
pp. 389-392 ◽  
Author(s):  
Timo Rhauderwiek ◽  
Konrad Wolkersdörfer ◽  
Sigurd Øien-Ødegaard ◽  
Karl-Petter Lillerud ◽  
Michael Wark ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Phosphonic Acid ◽  
Sorption Properties

The first porous MOF containing a porphyrin-based phosphonic acid was synthesized and characterized regarding its sorption properties and proton conductivity.

Polymorphic layered copper phosphonates: exfoliation and proton conductivity studies

2019 ◽  
Vol 48 (19) ◽  
pp. 6539-6545 ◽  
Author(s):  
Bei Liu ◽  
Jing-Cui Liu ◽  
Yang Shen ◽  
Jian-Shen Feng ◽  
Song-Song Bao ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Phosphonic Acid ◽  
Proton Conduction ◽  
Layered Compounds

α-Cu(4-cnappH)(H2O) (α-Cu-1), α-Cu(4-cnappH)(H2O)·0.5H2O (α-Cu-2) and β-Cu(4-cnappH)(H2O) (β-Cu) [4-cnappH3 = (4-carboxynaphthalen-1-yl)phosphonic acid] are polymorphic layered compounds. Proton conduction is more favorable in α-Cu-2 than in α-Cu-1, but exfoliation into nanosheets decreases the conductivity.

Boron Nanotubes: Sorption Properties and Proton Conductivity

2011 ◽  
Vol 3 (6) ◽  
pp. 850-855
Author(s):  
I. V. Zaporotskova ◽  
E. V. Perevalova ◽  
N. P. Zaporotskova
Keyword(s):  
Proton Conductivity ◽  
Sorption Properties

Effect of Polymer Composition and Water Content on Proton Conductivity in Vinyl Benzyl Phosphonic Acid-4-Vinyl Pyridine Copolymers

2008 ◽  
Vol 209 (24) ◽  
pp. 2494-2503 ◽  
Author(s):  
Fengjing Jiang ◽  
Anke Kaltbeitzel ◽  
Birgit Fassbender ◽  
Gunther Brunklaus ◽  
Hongting Pu ◽  
...  
Keyword(s):  
Water Content ◽  
Proton Conductivity ◽  
Phosphonic Acid ◽  
Polymer Composition ◽  
Vinyl Pyridine ◽  
Vinyl Benzyl

Three Series of Sulfo-Functionalized Mixed-Linker CAU-10 Analogues: Sorption Properties, Proton Conductivity, and Catalytic Activity

2015 ◽  
Vol 21 (35) ◽  
pp. 12517-12524 ◽  
Author(s):  
Nele Reimer ◽  
Bart Bueken ◽  
Sebastian Leubner ◽  
Christopher Seidler ◽  
Michael Wark ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Proton Conductivity ◽  
Sorption Properties

Sorption properties of porous spray-dried microspheres functionalized by phosphonic acid groups

2012 ◽  
Vol 153 ◽  
pp. 171-177 ◽  
Author(s):  
Inna V. Melnyk ◽  
Vasyl P. Goncharyk ◽  
Lidia I. Kozhara ◽  
Gabriella R. Yurchenko ◽  
Alexander K. Matkovsky ◽  
...  
Keyword(s):  
Phosphonic Acid ◽  
Sorption Properties ◽  
Phosphonic Acid Groups ◽  
Spray Dried

Proton conductivity and diffusion study of molten phosphonic acid H3PO3

2008 ◽  
Vol 179 (15-16) ◽  
pp. 523-528 ◽  
Author(s):  
M SCHUSTER ◽  
K KREUER ◽  
H STEININGER ◽  
J MAIER
Keyword(s):  
Proton Conductivity ◽  
Phosphonic Acid ◽  
Diffusion Study ◽  
And Diffusion

Proton conductivity of functionalized zirconia colloids

2002 ◽  
Vol 756 ◽  
Author(s):  
D. Carrière ◽  
M. Moreau ◽  
K. Lahlil ◽  
P. Barboux ◽  
J.-P. Boilot
Keyword(s):  
Relative Humidity ◽  
Phosphoric Acid ◽  
Aqueous Solutions ◽  
Proton Conductivity ◽  
Phosphonic Acid ◽  
Conduction Mechanism ◽  
Covalent Bonding ◽  
Sulphonic Acid ◽  
High Acidity ◽  
Significant Proton

ABSTRACTColloidal 60 nm ZrO2 particles have been treated with aqueous solutions of phosphoric acid and sulphophenyl-phosphonic acid (SPPA). This leads to the covalent bonding of P-OH and C6H4-SO3H acid groups onto the surface of the particles. The resulting acidity yields a significant proton conductivity at the surface of the particles.The proton conductivity of the ZrO2-H3PO4 system is quite stable against a change of relative humidity and temperature. However, it remains limited by the low acidity of the POH group. On the contrary, the proton conductivity of the ZrO2-SPPA system is almost two orders of magnitude higher at high relative humidities due to the high acidity of the C6H4-SO3H group (1.10-3 S.cm-1 in the same conditions). But, it is much more sensitive to changes in relative humidity.A mixed grafting of both H3PO4 and SPPA onto the zirconia particles allows to obtain a conductivity as high as in the SPPA case whereas it remains stable with humidity and temperature as for the phosphoric acid. This probably indicates that the conductivity arises from ionization of sulphonic acid but that the weaker phosphoric acid groups contribute to the conduction mechanism.

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